[backend,refactor][s]: split backends in separate files and put in separate module recline.Backend.
This commit is contained in:
parent
a470e66ff3
commit
e3a0615e43
@ -26,7 +26,9 @@
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<script type="text/javascript" src="../src/util.js"></script>
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<script type="text/javascript" src="../src/costco.js"></script>
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<script type="text/javascript" src="../src/model.js"></script>
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<script type="text/javascript" src="../src/backend.js"></script>
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<script type="text/javascript" src="../src/backend/base.js"></script>
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<script type="text/javascript" src="../src/backend/memory.js"></script>
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<script type="text/javascript" src="../src/backend/webstore.js"></script>
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<script type="text/javascript" src="../src/view.js"></script>
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<script type="text/javascript" src="../src/view-grid.js"></script>
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<script type="text/javascript" src="../src/view-flot-graph.js"></script>
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@ -62,7 +62,7 @@ function demoDataset() {
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, {id: 5, x: 6, y: 12, z: 18}
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]
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};
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var backend = new recline.Model.BackendMemory();
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var backend = new recline.Backend.BackendMemory();
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backend.addDataset(inData);
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var dataset = new recline.Model.Dataset({id: datasetId}, backend);
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return dataset;
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386
src/backend.js
386
src/backend.js
@ -1,386 +0,0 @@
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// # Recline Backends
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//
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// Backends are connectors to backend data sources and stores
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//
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// Backends are implemented as Backbone models but this is just a
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// convenience (they do not save or load themselves from any remote
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// source)
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this.recline = this.recline || {};
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this.recline.Model = this.recline.Model || {};
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(function($, my) {
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// ## Backbone.sync
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//
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// Override Backbone.sync to hand off to sync function in relevant backend
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Backbone.sync = function(method, model, options) {
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return model.backend.sync(method, model, options);
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}
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// ## wrapInTimeout
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//
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// Crude way to catch backend errors
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// Many of backends use JSONP and so will not get error messages and this is
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// a crude way to catch those errors.
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function wrapInTimeout(ourFunction) {
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var dfd = $.Deferred();
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var timeout = 5000;
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var timer = setTimeout(function() {
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dfd.reject({
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message: 'Request Error: Backend did not respond after ' + (timeout / 1000) + ' seconds'
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});
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}, timeout);
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ourFunction.done(function(arguments) {
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clearTimeout(timer);
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dfd.resolve(arguments);
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})
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.fail(function(arguments) {
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clearTimeout(timer);
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dfd.reject(arguments);
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})
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;
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return dfd.promise();
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}
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// ## BackendMemory - uses in-memory data
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//
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// This is very artificial and is really only designed for testing
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// purposes.
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//
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// To use it you should provide in your constructor data:
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//
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// * metadata (including fields array)
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// * documents: list of hashes, each hash being one doc. A doc *must* have an id attribute which is unique.
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//
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// Example:
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//
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// <pre>
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// // Backend setup
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// var backend = Backend();
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// backend.addDataset({
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// metadata: {
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// id: 'my-id',
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// title: 'My Title'
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// },
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// fields: [{id: 'x'}, {id: 'y'}, {id: 'z'}],
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// documents: [
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// {id: 0, x: 1, y: 2, z: 3},
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// {id: 1, x: 2, y: 4, z: 6}
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// ]
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// });
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// // later ...
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// var dataset = Dataset({id: 'my-id'});
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// dataset.fetch();
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// etc ...
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// </pre>
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my.BackendMemory = Backbone.Model.extend({
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initialize: function() {
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this.datasets = {};
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},
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addDataset: function(data) {
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this.datasets[data.metadata.id] = $.extend(true, {}, data);
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},
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sync: function(method, model, options) {
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var self = this;
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if (method === "read") {
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var dfd = $.Deferred();
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if (model.__type__ == 'Dataset') {
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var rawDataset = this.datasets[model.id];
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model.set(rawDataset.metadata);
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model.fields.reset(rawDataset.fields);
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model.docCount = rawDataset.documents.length;
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dfd.resolve(model);
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}
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return dfd.promise();
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} else if (method === 'update') {
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var dfd = $.Deferred();
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if (model.__type__ == 'Document') {
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_.each(self.datasets[model.dataset.id].documents, function(doc, idx) {
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if(doc.id === model.id) {
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self.datasets[model.dataset.id].documents[idx] = model.toJSON();
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}
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});
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dfd.resolve(model);
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}
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return dfd.promise();
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} else if (method === 'delete') {
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var dfd = $.Deferred();
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if (model.__type__ == 'Document') {
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var rawDataset = self.datasets[model.dataset.id];
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var newdocs = _.reject(rawDataset.documents, function(doc) {
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return (doc.id === model.id);
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});
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rawDataset.documents = newdocs;
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dfd.resolve(model);
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}
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return dfd.promise();
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} else {
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alert('Not supported: sync on BackendMemory with method ' + method + ' and model ' + model);
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}
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},
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query: function(model, queryObj) {
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var numRows = queryObj.size;
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var start = queryObj.offset;
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var dfd = $.Deferred();
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results = this.datasets[model.id].documents;
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// not complete sorting!
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_.each(queryObj.sort, function(item) {
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results = _.sortBy(results, function(doc) {
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var _out = doc[item[0]];
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return (item[1] == 'asc') ? _out : -1*_out;
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});
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});
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var results = results.slice(start, start+numRows);
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dfd.resolve(results);
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return dfd.promise();
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}
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});
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my.backends['memory'] = new my.BackendMemory();
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// ## BackendWebstore
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//
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// Connecting to [Webstores](http://github.com/okfn/webstore)
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//
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// To use this backend ensure your Dataset has a webstore_url in its attributes.
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my.BackendWebstore = Backbone.Model.extend({
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sync: function(method, model, options) {
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if (method === "read") {
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if (model.__type__ == 'Dataset') {
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var base = model.get('webstore_url');
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var schemaUrl = base + '/schema.json';
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var jqxhr = $.ajax({
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url: schemaUrl,
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dataType: 'jsonp',
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jsonp: '_callback'
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});
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var dfd = $.Deferred();
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wrapInTimeout(jqxhr).done(function(schema) {
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var fieldData = _.map(schema.data, function(item) {
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item.id = item.name;
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delete item.name;
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return item;
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});
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model.fields.reset(fieldData);
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model.docCount = schema.count;
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dfd.resolve(model, jqxhr);
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})
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.fail(function(arguments) {
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dfd.reject(arguments);
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});
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return dfd.promise();
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}
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}
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},
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query: function(model, queryObj) {
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var base = model.get('webstore_url');
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var data = {
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_limit: queryObj.size
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, _offset: queryObj.offset
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};
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var jqxhr = $.ajax({
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url: base + '.json',
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data: data,
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dataType: 'jsonp',
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jsonp: '_callback',
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cache: true
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});
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var dfd = $.Deferred();
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jqxhr.done(function(results) {
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dfd.resolve(results.data);
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});
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return dfd.promise();
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}
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});
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my.backends['webstore'] = new my.BackendWebstore();
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// ## BackendDataProxy
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//
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// For connecting to [DataProxy-s](http://github.com/okfn/dataproxy).
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//
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// When initializing the DataProxy backend you can set the following attributes:
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//
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// * dataproxy: {url-to-proxy} (optional). Defaults to http://jsonpdataproxy.appspot.com
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//
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// Datasets using using this backend should set the following attributes:
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//
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// * url: (required) url-of-data-to-proxy
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// * format: (optional) csv | xls (defaults to csv if not specified)
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//
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// Note that this is a **read-only** backend.
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my.BackendDataProxy = Backbone.Model.extend({
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defaults: {
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dataproxy_url: 'http://jsonpdataproxy.appspot.com'
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},
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sync: function(method, model, options) {
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var self = this;
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if (method === "read") {
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if (model.__type__ == 'Dataset') {
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var base = self.get('dataproxy_url');
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// TODO: should we cache for extra efficiency
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var data = {
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url: model.get('url')
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, 'max-results': 1
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, type: model.get('format') || 'csv'
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};
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var jqxhr = $.ajax({
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url: base
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, data: data
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, dataType: 'jsonp'
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});
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var dfd = $.Deferred();
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wrapInTimeout(jqxhr).done(function(results) {
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model.fields.reset(_.map(results.fields, function(fieldId) {
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return {id: fieldId};
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})
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);
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dfd.resolve(model, jqxhr);
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})
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.fail(function(arguments) {
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dfd.reject(arguments);
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});
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return dfd.promise();
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}
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} else {
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alert('This backend only supports read operations');
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}
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},
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query: function(dataset, queryObj) {
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var base = this.get('dataproxy_url');
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var data = {
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url: dataset.get('url')
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, 'max-results': queryObj.size
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, type: dataset.get('format')
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};
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var jqxhr = $.ajax({
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url: base
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, data: data
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, dataType: 'jsonp'
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});
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var dfd = $.Deferred();
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jqxhr.done(function(results) {
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var _out = _.map(results.data, function(doc) {
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var tmp = {};
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_.each(results.fields, function(key, idx) {
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tmp[key] = doc[idx];
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});
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return tmp;
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});
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dfd.resolve(_out);
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});
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return dfd.promise();
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}
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});
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my.backends['dataproxy'] = new my.BackendDataProxy();
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// ## Google spreadsheet backend
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//
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// Connect to Google Docs spreadsheet.
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//
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// Dataset must have a url attribute pointing to the Gdocs
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// spreadsheet's JSON feed e.g.
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//
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// <pre>
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// var dataset = new recline.Model.Dataset({
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// url: 'https://spreadsheets.google.com/feeds/list/0Aon3JiuouxLUdDQwZE1JdV94cUd6NWtuZ0IyWTBjLWc/od6/public/values?alt=json'
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// },
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// 'gdocs'
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// );
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// </pre>
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my.BackendGDoc = Backbone.Model.extend({
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sync: function(method, model, options) {
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var self = this;
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if (method === "read") {
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var dfd = $.Deferred();
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var dataset = model;
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$.getJSON(model.get('url'), function(d) {
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result = self.gdocsToJavascript(d);
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model.fields.reset(_.map(result.field, function(fieldId) {
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return {id: fieldId};
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})
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);
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// cache data onto dataset (we have loaded whole gdoc it seems!)
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model._dataCache = result.data;
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dfd.resolve(model);
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})
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return dfd.promise(); }
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},
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query: function(dataset, queryObj) {
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var dfd = $.Deferred();
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var fields = _.pluck(dataset.fields.toJSON(), 'id');
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// zip the fields with the data rows to produce js objs
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// TODO: factor this out as a common method with other backends
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var objs = _.map(dataset._dataCache, function (d) {
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var obj = {};
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_.each(_.zip(fields, d), function (x) { obj[x[0]] = x[1]; })
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return obj;
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});
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dfd.resolve(objs);
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return dfd;
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},
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gdocsToJavascript: function(gdocsSpreadsheet) {
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/*
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:options: (optional) optional argument dictionary:
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columnsToUse: list of columns to use (specified by field names)
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colTypes: dictionary (with column names as keys) specifying types (e.g. range, percent for use in conversion).
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:return: tabular data object (hash with keys: field and data).
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Issues: seems google docs return columns in rows in random order and not even sure whether consistent across rows.
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*/
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var options = {};
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if (arguments.length > 1) {
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options = arguments[1];
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}
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var results = {
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'field': [],
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'data': []
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};
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// default is no special info on type of columns
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var colTypes = {};
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if (options.colTypes) {
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colTypes = options.colTypes;
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}
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// either extract column headings from spreadsheet directly, or used supplied ones
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if (options.columnsToUse) {
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// columns set to subset supplied
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results.field = options.columnsToUse;
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} else {
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// set columns to use to be all available
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if (gdocsSpreadsheet.feed.entry.length > 0) {
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for (var k in gdocsSpreadsheet.feed.entry[0]) {
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if (k.substr(0, 3) == 'gsx') {
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var col = k.substr(4)
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results.field.push(col);
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}
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}
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}
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}
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// converts non numberical values that should be numerical (22.3%[string] -> 0.223[float])
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var rep = /^([\d\.\-]+)\%$/;
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$.each(gdocsSpreadsheet.feed.entry, function (i, entry) {
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var row = [];
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for (var k in results.field) {
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var col = results.field[k];
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var _keyname = 'gsx$' + col;
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var value = entry[_keyname]['$t'];
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// if labelled as % and value contains %, convert
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if (colTypes[col] == 'percent') {
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if (rep.test(value)) {
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var value2 = rep.exec(value);
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var value3 = parseFloat(value2);
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value = value3 / 100;
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}
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}
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row.push(value);
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}
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results.data.push(row);
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});
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return results;
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}
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});
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my.backends['gdocs'] = new my.BackendGDoc();
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}(jQuery, this.recline.Model));
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44
src/backend/base.js
Normal file
44
src/backend/base.js
Normal file
@ -0,0 +1,44 @@
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// # Recline Backends
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//
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// Backends are connectors to backend data sources and stores
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//
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// Backends are implemented as Backbone models but this is just a
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// convenience (they do not save or load themselves from any remote
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// source)
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this.recline = this.recline || {};
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this.recline.Backend = this.recline.Backend || {};
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(function($, my) {
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// ## Backbone.sync
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//
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// Override Backbone.sync to hand off to sync function in relevant backend
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Backbone.sync = function(method, model, options) {
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return model.backend.sync(method, model, options);
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}
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// ## wrapInTimeout
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//
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// Crude way to catch backend errors
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// Many of backends use JSONP and so will not get error messages and this is
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// a crude way to catch those errors.
|
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my.wrapInTimeout = function(ourFunction) {
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var dfd = $.Deferred();
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var timeout = 5000;
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var timer = setTimeout(function() {
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dfd.reject({
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message: 'Request Error: Backend did not respond after ' + (timeout / 1000) + ' seconds'
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});
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}, timeout);
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ourFunction.done(function(arguments) {
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clearTimeout(timer);
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dfd.resolve(arguments);
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})
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.fail(function(arguments) {
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clearTimeout(timer);
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dfd.reject(arguments);
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})
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;
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return dfd.promise();
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}
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}(jQuery, this.recline.Backend));
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85
src/backend/dataproxy.js
Normal file
85
src/backend/dataproxy.js
Normal file
@ -0,0 +1,85 @@
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this.recline = this.recline || {};
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this.recline.Backend = this.recline.Backend || {};
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(function($, my) {
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// ## BackendDataProxy
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//
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// For connecting to [DataProxy-s](http://github.com/okfn/dataproxy).
|
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//
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// When initializing the DataProxy backend you can set the following attributes:
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//
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// * dataproxy: {url-to-proxy} (optional). Defaults to http://jsonpdataproxy.appspot.com
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//
|
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// Datasets using using this backend should set the following attributes:
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//
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// * url: (required) url-of-data-to-proxy
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// * format: (optional) csv | xls (defaults to csv if not specified)
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//
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// Note that this is a **read-only** backend.
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my.BackendDataProxy = Backbone.Model.extend({
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defaults: {
|
||||
dataproxy_url: 'http://jsonpdataproxy.appspot.com'
|
||||
},
|
||||
sync: function(method, model, options) {
|
||||
var self = this;
|
||||
if (method === "read") {
|
||||
if (model.__type__ == 'Dataset') {
|
||||
var base = self.get('dataproxy_url');
|
||||
// TODO: should we cache for extra efficiency
|
||||
var data = {
|
||||
url: model.get('url')
|
||||
, 'max-results': 1
|
||||
, type: model.get('format') || 'csv'
|
||||
};
|
||||
var jqxhr = $.ajax({
|
||||
url: base
|
||||
, data: data
|
||||
, dataType: 'jsonp'
|
||||
});
|
||||
var dfd = $.Deferred();
|
||||
my.wrapInTimeout(jqxhr).done(function(results) {
|
||||
model.fields.reset(_.map(results.fields, function(fieldId) {
|
||||
return {id: fieldId};
|
||||
})
|
||||
);
|
||||
dfd.resolve(model, jqxhr);
|
||||
})
|
||||
.fail(function(arguments) {
|
||||
dfd.reject(arguments);
|
||||
});
|
||||
return dfd.promise();
|
||||
}
|
||||
} else {
|
||||
alert('This backend only supports read operations');
|
||||
}
|
||||
},
|
||||
query: function(dataset, queryObj) {
|
||||
var base = this.get('dataproxy_url');
|
||||
var data = {
|
||||
url: dataset.get('url')
|
||||
, 'max-results': queryObj.size
|
||||
, type: dataset.get('format')
|
||||
};
|
||||
var jqxhr = $.ajax({
|
||||
url: base
|
||||
, data: data
|
||||
, dataType: 'jsonp'
|
||||
});
|
||||
var dfd = $.Deferred();
|
||||
jqxhr.done(function(results) {
|
||||
var _out = _.map(results.data, function(doc) {
|
||||
var tmp = {};
|
||||
_.each(results.fields, function(key, idx) {
|
||||
tmp[key] = doc[idx];
|
||||
});
|
||||
return tmp;
|
||||
});
|
||||
dfd.resolve(_out);
|
||||
});
|
||||
return dfd.promise();
|
||||
}
|
||||
});
|
||||
recline.Model.backends['dataproxy'] = new my.BackendDataProxy();
|
||||
|
||||
|
||||
}(jQuery, this.recline.Backend));
|
||||
117
src/backend/gdocs.js
Normal file
117
src/backend/gdocs.js
Normal file
@ -0,0 +1,117 @@
|
||||
this.recline = this.recline || {};
|
||||
this.recline.Backend = this.recline.Backend || {};
|
||||
|
||||
(function($, my) {
|
||||
// ## Google spreadsheet backend
|
||||
//
|
||||
// Connect to Google Docs spreadsheet.
|
||||
//
|
||||
// Dataset must have a url attribute pointing to the Gdocs
|
||||
// spreadsheet's JSON feed e.g.
|
||||
//
|
||||
// <pre>
|
||||
// var dataset = new recline.Model.Dataset({
|
||||
// url: 'https://spreadsheets.google.com/feeds/list/0Aon3JiuouxLUdDQwZE1JdV94cUd6NWtuZ0IyWTBjLWc/od6/public/values?alt=json'
|
||||
// },
|
||||
// 'gdocs'
|
||||
// );
|
||||
// </pre>
|
||||
my.BackendGDoc = Backbone.Model.extend({
|
||||
sync: function(method, model, options) {
|
||||
var self = this;
|
||||
if (method === "read") {
|
||||
var dfd = $.Deferred();
|
||||
var dataset = model;
|
||||
|
||||
$.getJSON(model.get('url'), function(d) {
|
||||
result = self.gdocsToJavascript(d);
|
||||
model.fields.reset(_.map(result.field, function(fieldId) {
|
||||
return {id: fieldId};
|
||||
})
|
||||
);
|
||||
// cache data onto dataset (we have loaded whole gdoc it seems!)
|
||||
model._dataCache = result.data;
|
||||
dfd.resolve(model);
|
||||
})
|
||||
return dfd.promise(); }
|
||||
},
|
||||
|
||||
query: function(dataset, queryObj) {
|
||||
var dfd = $.Deferred();
|
||||
var fields = _.pluck(dataset.fields.toJSON(), 'id');
|
||||
|
||||
// zip the fields with the data rows to produce js objs
|
||||
// TODO: factor this out as a common method with other backends
|
||||
var objs = _.map(dataset._dataCache, function (d) {
|
||||
var obj = {};
|
||||
_.each(_.zip(fields, d), function (x) { obj[x[0]] = x[1]; })
|
||||
return obj;
|
||||
});
|
||||
dfd.resolve(objs);
|
||||
return dfd;
|
||||
},
|
||||
gdocsToJavascript: function(gdocsSpreadsheet) {
|
||||
/*
|
||||
:options: (optional) optional argument dictionary:
|
||||
columnsToUse: list of columns to use (specified by field names)
|
||||
colTypes: dictionary (with column names as keys) specifying types (e.g. range, percent for use in conversion).
|
||||
:return: tabular data object (hash with keys: field and data).
|
||||
|
||||
Issues: seems google docs return columns in rows in random order and not even sure whether consistent across rows.
|
||||
*/
|
||||
var options = {};
|
||||
if (arguments.length > 1) {
|
||||
options = arguments[1];
|
||||
}
|
||||
var results = {
|
||||
'field': [],
|
||||
'data': []
|
||||
};
|
||||
// default is no special info on type of columns
|
||||
var colTypes = {};
|
||||
if (options.colTypes) {
|
||||
colTypes = options.colTypes;
|
||||
}
|
||||
// either extract column headings from spreadsheet directly, or used supplied ones
|
||||
if (options.columnsToUse) {
|
||||
// columns set to subset supplied
|
||||
results.field = options.columnsToUse;
|
||||
} else {
|
||||
// set columns to use to be all available
|
||||
if (gdocsSpreadsheet.feed.entry.length > 0) {
|
||||
for (var k in gdocsSpreadsheet.feed.entry[0]) {
|
||||
if (k.substr(0, 3) == 'gsx') {
|
||||
var col = k.substr(4)
|
||||
results.field.push(col);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// converts non numberical values that should be numerical (22.3%[string] -> 0.223[float])
|
||||
var rep = /^([\d\.\-]+)\%$/;
|
||||
$.each(gdocsSpreadsheet.feed.entry, function (i, entry) {
|
||||
var row = [];
|
||||
for (var k in results.field) {
|
||||
var col = results.field[k];
|
||||
var _keyname = 'gsx$' + col;
|
||||
var value = entry[_keyname]['$t'];
|
||||
// if labelled as % and value contains %, convert
|
||||
if (colTypes[col] == 'percent') {
|
||||
if (rep.test(value)) {
|
||||
var value2 = rep.exec(value);
|
||||
var value3 = parseFloat(value2);
|
||||
value = value3 / 100;
|
||||
}
|
||||
}
|
||||
row.push(value);
|
||||
}
|
||||
results.data.push(row);
|
||||
});
|
||||
return results;
|
||||
}
|
||||
});
|
||||
recline.Model.backends['gdocs'] = new my.BackendGDoc();
|
||||
|
||||
}(jQuery, this.recline.Backend));
|
||||
|
||||
139
src/backend/memory.js
Normal file
139
src/backend/memory.js
Normal file
@ -0,0 +1,139 @@
|
||||
// # Recline Backends
|
||||
//
|
||||
// Backends are connectors to backend data sources and stores
|
||||
//
|
||||
// Backends are implemented as Backbone models but this is just a
|
||||
// convenience (they do not save or load themselves from any remote
|
||||
// source)
|
||||
this.recline = this.recline || {};
|
||||
this.recline.Backend = this.recline.Backend || {};
|
||||
|
||||
(function($, my) {
|
||||
// ## Backbone.sync
|
||||
//
|
||||
// Override Backbone.sync to hand off to sync function in relevant backend
|
||||
Backbone.sync = function(method, model, options) {
|
||||
return model.backend.sync(method, model, options);
|
||||
}
|
||||
|
||||
// ## wrapInTimeout
|
||||
//
|
||||
// Crude way to catch backend errors
|
||||
// Many of backends use JSONP and so will not get error messages and this is
|
||||
// a crude way to catch those errors.
|
||||
function wrapInTimeout(ourFunction) {
|
||||
var dfd = $.Deferred();
|
||||
var timeout = 5000;
|
||||
var timer = setTimeout(function() {
|
||||
dfd.reject({
|
||||
message: 'Request Error: Backend did not respond after ' + (timeout / 1000) + ' seconds'
|
||||
});
|
||||
}, timeout);
|
||||
ourFunction.done(function(arguments) {
|
||||
clearTimeout(timer);
|
||||
dfd.resolve(arguments);
|
||||
})
|
||||
.fail(function(arguments) {
|
||||
clearTimeout(timer);
|
||||
dfd.reject(arguments);
|
||||
})
|
||||
;
|
||||
return dfd.promise();
|
||||
}
|
||||
|
||||
// ## BackendMemory - uses in-memory data
|
||||
//
|
||||
// This is very artificial and is really only designed for testing
|
||||
// purposes.
|
||||
//
|
||||
// To use it you should provide in your constructor data:
|
||||
//
|
||||
// * metadata (including fields array)
|
||||
// * documents: list of hashes, each hash being one doc. A doc *must* have an id attribute which is unique.
|
||||
//
|
||||
// Example:
|
||||
//
|
||||
// <pre>
|
||||
// // Backend setup
|
||||
// var backend = Backend();
|
||||
// backend.addDataset({
|
||||
// metadata: {
|
||||
// id: 'my-id',
|
||||
// title: 'My Title'
|
||||
// },
|
||||
// fields: [{id: 'x'}, {id: 'y'}, {id: 'z'}],
|
||||
// documents: [
|
||||
// {id: 0, x: 1, y: 2, z: 3},
|
||||
// {id: 1, x: 2, y: 4, z: 6}
|
||||
// ]
|
||||
// });
|
||||
// // later ...
|
||||
// var dataset = Dataset({id: 'my-id'});
|
||||
// dataset.fetch();
|
||||
// etc ...
|
||||
// </pre>
|
||||
my.BackendMemory = Backbone.Model.extend({
|
||||
initialize: function() {
|
||||
this.datasets = {};
|
||||
},
|
||||
addDataset: function(data) {
|
||||
this.datasets[data.metadata.id] = $.extend(true, {}, data);
|
||||
},
|
||||
sync: function(method, model, options) {
|
||||
var self = this;
|
||||
if (method === "read") {
|
||||
var dfd = $.Deferred();
|
||||
if (model.__type__ == 'Dataset') {
|
||||
var rawDataset = this.datasets[model.id];
|
||||
model.set(rawDataset.metadata);
|
||||
model.fields.reset(rawDataset.fields);
|
||||
model.docCount = rawDataset.documents.length;
|
||||
dfd.resolve(model);
|
||||
}
|
||||
return dfd.promise();
|
||||
} else if (method === 'update') {
|
||||
var dfd = $.Deferred();
|
||||
if (model.__type__ == 'Document') {
|
||||
_.each(self.datasets[model.dataset.id].documents, function(doc, idx) {
|
||||
if(doc.id === model.id) {
|
||||
self.datasets[model.dataset.id].documents[idx] = model.toJSON();
|
||||
}
|
||||
});
|
||||
dfd.resolve(model);
|
||||
}
|
||||
return dfd.promise();
|
||||
} else if (method === 'delete') {
|
||||
var dfd = $.Deferred();
|
||||
if (model.__type__ == 'Document') {
|
||||
var rawDataset = self.datasets[model.dataset.id];
|
||||
var newdocs = _.reject(rawDataset.documents, function(doc) {
|
||||
return (doc.id === model.id);
|
||||
});
|
||||
rawDataset.documents = newdocs;
|
||||
dfd.resolve(model);
|
||||
}
|
||||
return dfd.promise();
|
||||
} else {
|
||||
alert('Not supported: sync on BackendMemory with method ' + method + ' and model ' + model);
|
||||
}
|
||||
},
|
||||
query: function(model, queryObj) {
|
||||
var numRows = queryObj.size;
|
||||
var start = queryObj.offset;
|
||||
var dfd = $.Deferred();
|
||||
results = this.datasets[model.id].documents;
|
||||
// not complete sorting!
|
||||
_.each(queryObj.sort, function(item) {
|
||||
results = _.sortBy(results, function(doc) {
|
||||
var _out = doc[item[0]];
|
||||
return (item[1] == 'asc') ? _out : -1*_out;
|
||||
});
|
||||
});
|
||||
var results = results.slice(start, start+numRows);
|
||||
dfd.resolve(results);
|
||||
return dfd.promise();
|
||||
}
|
||||
});
|
||||
recline.Model.backends['memory'] = new my.BackendMemory();
|
||||
|
||||
}(jQuery, this.recline.Backend));
|
||||
61
src/backend/webstore.js
Normal file
61
src/backend/webstore.js
Normal file
@ -0,0 +1,61 @@
|
||||
this.recline = this.recline || {};
|
||||
this.recline.Backend = this.recline.Backend || {};
|
||||
|
||||
(function($, my) {
|
||||
// ## BackendWebstore
|
||||
//
|
||||
// Connecting to [Webstores](http://github.com/okfn/webstore)
|
||||
//
|
||||
// To use this backend ensure your Dataset has a webstore_url in its attributes.
|
||||
my.BackendWebstore = Backbone.Model.extend({
|
||||
sync: function(method, model, options) {
|
||||
if (method === "read") {
|
||||
if (model.__type__ == 'Dataset') {
|
||||
var base = model.get('webstore_url');
|
||||
var schemaUrl = base + '/schema.json';
|
||||
var jqxhr = $.ajax({
|
||||
url: schemaUrl,
|
||||
dataType: 'jsonp',
|
||||
jsonp: '_callback'
|
||||
});
|
||||
var dfd = $.Deferred();
|
||||
my.wrapInTimeout(jqxhr).done(function(schema) {
|
||||
var fieldData = _.map(schema.data, function(item) {
|
||||
item.id = item.name;
|
||||
delete item.name;
|
||||
return item;
|
||||
});
|
||||
model.fields.reset(fieldData);
|
||||
model.docCount = schema.count;
|
||||
dfd.resolve(model, jqxhr);
|
||||
})
|
||||
.fail(function(arguments) {
|
||||
dfd.reject(arguments);
|
||||
});
|
||||
return dfd.promise();
|
||||
}
|
||||
}
|
||||
},
|
||||
query: function(model, queryObj) {
|
||||
var base = model.get('webstore_url');
|
||||
var data = {
|
||||
_limit: queryObj.size
|
||||
, _offset: queryObj.offset
|
||||
};
|
||||
var jqxhr = $.ajax({
|
||||
url: base + '.json',
|
||||
data: data,
|
||||
dataType: 'jsonp',
|
||||
jsonp: '_callback',
|
||||
cache: true
|
||||
});
|
||||
var dfd = $.Deferred();
|
||||
jqxhr.done(function(results) {
|
||||
dfd.resolve(results.data);
|
||||
});
|
||||
return dfd.promise();
|
||||
}
|
||||
});
|
||||
recline.Model.backends['webstore'] = new my.BackendWebstore();
|
||||
|
||||
}(jQuery, this.recline.Backend));
|
||||
@ -19,7 +19,7 @@ var memoryData = {
|
||||
};
|
||||
|
||||
function makeBackendDataset() {
|
||||
var backend = new recline.Model.BackendMemory();
|
||||
var backend = new recline.Backend.BackendMemory();
|
||||
backend.addDataset(memoryData);
|
||||
var dataset = new recline.Model.Dataset({id: memoryData.metadata.id}, backend);
|
||||
return dataset;
|
||||
|
||||
@ -18,7 +18,11 @@
|
||||
|
||||
<script type="text/javascript" src="../src/model.js"></script>
|
||||
<script type="text/javascript" src="model.test.js"></script>
|
||||
<script type="text/javascript" src="../src/backend.js"></script>
|
||||
<script type="text/javascript" src="../src/backend/base.js"></script>
|
||||
<script type="text/javascript" src="../src/backend/memory.js"></script>
|
||||
<script type="text/javascript" src="../src/backend/webstore.js"></script>
|
||||
<script type="text/javascript" src="../src/backend/dataproxy.js"></script>
|
||||
<script type="text/javascript" src="../src/backend/gdocs.js"></script>
|
||||
<script type="text/javascript" src="backend.test.js"></script>
|
||||
<script type="text/javascript" src="../src/view.js"></script>
|
||||
<script type="text/javascript" src="../src/view-grid.js"></script>
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user