106 lines
2.6 KiB
JavaScript
106 lines
2.6 KiB
JavaScript
// adapted from https://github.com/harthur/costco. heather rules
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var costco = function() {
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var toUpdate = [];
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function handleEditorChange(e) {
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mapDocs(e.target.value);
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}
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function computeChanges() {
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$("#notification-message").text("Computing changes...");
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var text = $("#map-function").val();
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var docs;
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try {
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docs = JSON.parse(text);
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}
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catch(e) {
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try {
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docs = JSON.parse("[" + text + "]");
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}
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catch(e) {
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// not JSON, must be an edit function
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return mapDocs(text);
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}
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}
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if(!docs.length) docs = [docs];
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toUpdate = docs;
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$("#notification-message").text("Computing changes...");
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$("#status").html("<span class='warning'>About to add " + docs.length
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+ " docs to " + getDb().name + "</span>");
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$("#update-container").show();
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}
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function mapDocs(funcString) {
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var errors = $('.expression-preview-parsing-status');
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try {
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eval("var editFunc = " + funcString);
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errors.text('No syntax error.');
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} catch(e) {
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errors.text(e+"");
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return;
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}
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toUpdate = [];
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var deleted = 0
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, edited = 0
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, failed = 0
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, count = 0
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, preview = [];
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_.each(app.cache, function(doc) {
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try {
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var updated = editFunc(_.clone(doc));
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} catch(e) {
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failed++; // ignore if it throws on this doc
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return;
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}
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if(updated === null) {
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doc._deleted = true;
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toUpdate.push(doc);
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deleted++;
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}
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else if(updated && !_.isEqual(updated, doc)) {
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toUpdate.push(updated);
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edited++;
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}
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preview.push({before: doc[app.currentColumn], after: updated[app.currentColumn]});
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count++;
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});
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util.render('editPreview', 'editPreview', {rows: preview});
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//
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// // todo: make template for this
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// $("#status").html("<span class='warning'>About to edit " + edited
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// + " docs and delete " + deleted + " docs from "
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// + getDb().name + "</span>");
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// if(failed)
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// $("#status").append(". Edit function threw on " + failed + " docs");
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// $("#update-container").show();
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}
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function updateDocs(callback) {
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if(!toUpdate.length)
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return callback();
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getDb().bulkSave({docs: toUpdate}, {
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success: callback,
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error: function(req, status, err) {
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$("#status").html("<span class='error'>error updating docs: "
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+ err + "</span>");
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}
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});
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}
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return {
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handleEditorChange: handleEditorChange,
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computeChanges: computeChanges,
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mapDocs: mapDocs,
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updateDocs: updateDocs
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};
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}(); |