backbone.js - Backbone fetch success callback -


i'm new backbone.js , i'm having issues giving collection success callback. i'm overriding fetch in order have url parameter in it. understand should able assign success callback in options pass backbone.collection.prototype.fetch.call()... but, code isn't working. fetch works correctly, callback function not called.

here bit of code:

app.chartcontroller = {   load: function(userconceptid) {     app.chartpointlist.fetch(userconceptid);       } };   app.chartpointlist = backbone.collection.extend({   model: app.chartpoint,   url: function() {     return '/chartpoints/' + this.userconceptid;   },   fetch: function(userconceptid, options) {              console.log("fetch chart point");                     typeof(options) != 'undefined' || (options = {});     options.success = this.postprocess;     options.error = this.handleerror;      this.userconceptid = userconceptid;      return backbone.collection.prototype.fetch.call(this, options);       },   postprocess : function (resp, status, xhr) {     console.log("postprocess");          // never gets called     /**      ... whole bunch of stuff...      **/     new app.views.chartview({ collection: });   },    handleerror : function (resp, status, xhr) {     alert("could not load chart data!");  // not called   } });

any idea i'm doing wrong? thanks!

@fguillen's comment , another thread helped me figure out. specifically:

collection.fetch() call reset() on success, in turn trigger 'reset' event. subscribers collections reset event should receive event.

the issue wasn't success callback @ all. turns out had problem in view subscribed chartpointlist reset event. function in view being called before success callback , throwing error, , success callback not being called.


Comments

Post a Comment

Popular posts from this blog

java - Play! framework 2.0: How to display multiple image? -

i need display gallery of photos. here template: @(photos: list[photo]) @title = { <bold>gallery</bold> } @main(title,"photo"){ <ul class="thumbnails"> @for(photo <- photos) { <li class="span3"> <a href="#" class="thumbnail"> <img src="@photo.path" alt=""> </a> </li> } </ul> } and here controller method: public static result getphotos() { return ok(views.html.photo.gallery.render(photo.get())); } and here photo bean : @entity public class photo extends model { @id public long id; @required public string label; public string path; public photo(string path, string label) { this.path = path; this.label = label; } private static finder<long, photo> find = new finder<long, photo>( long.class, photo.class); public static list<phot...
Read more

gmail - Is there any documentation for read-only access to the Google Contacts API? -

i want read-only access user's google contacts. there stackoverflow member wanted this, , received following answer : yes, there is, use https://www.googleapis.com/auth/contacts.readonly scope , "view contacts". this exchange reference read-only access google contacts can find using google. simply using access token obtained attempt read usual google contacts api (i.e. https://www.google.com/m8/feeds ) fails insufficient permissions. similarly, using google contacts api on new target fails 404 errors (for example https://www.googleapis.com/auth/contacts.readonly/default/full ). is there documentation anywhere on how use api, or permissible way access google contacts api full read-write access?
Read more

php - Controller/JToolBar not working in Joomla 2.5 -

relevant code: jtoolbarhelper::custom('savecategories', 'save', '', 'save', false, false); ... <input type="hidden" name="controller" value="easyblogcontroller"> according can dig docs , own previous questions, should call savecategories() function in easyblogcontroller . i've tried setting value easyblog , easyblog.php (file name) current easyblogcontroller (class name). clicking on save button refreshes page. not redirect, echo or var_dump test code put in savecategories() function. var_dump ing jrequest::getvar('controller') , 'task' return correct values. creating controller object , using $controller->execute('task'); works. the values going depend on location of controller trying call, , have couple options here. typically there controller in base folder of component (likely components/com_easyblog) in file called controller.php , class name inside ...
Read more