Backbone fetch error status code

GitHub is home to over 28 million developers working together to host and review code, manage projects, and build software together. Even with an asynchronous fetch, Backbone returns a jQuery promise ( see Deferred Object - jQuery API). If you want to do an asynchronous fetch and check for errors: If you want to do an asynchronous fetch and check for errors:. Improved version of fetch for backbone. In that sense, the Backbone code is well thought and enables the. Truth is, if the fetch succeeds, I don' t really care about the raw response data, nor the text status and the XHR object. For the “ bad path” of request failure, we just pass the arguments. ajax allows you to pass the option ifModified: true. Doing this means the server may return an HTTP 304 Not Modified header, and no data; and jQuery. ajax will treat the 304 return as a " success" instead of an " error". Throughout my last project we have had an interesting approach to testing our Backbone. Instead of unit testing each and every bit of the application, we mock out Ajax requests and test that the application works end- to- end.

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    Even with an asynchronous fetch, Backbone returns a jQuery promise ( see. exist, make sure the server responds a 404 status code; Detect an error in the fetch. unable to call fetch on a backbone model Tag: backbone. js In the function jsonRequest below, I can log this. model to the console, but I can' t call this. fetch( ), which I thought was the appropriate way to make a request to my server ( at localhost: 8080/ jsonapi ). Router fires a function when a certain URL pattern is visited. And since functions are objects which can be passed around as a variable, this means you can declare it elsewhere and assign it to a URL pattern through the routes object, avoiding declaring the actual URL logic in the router file. Fetching a Backbone collection with JSONP is really simple. It turns out you only need to override the sync method ( to set the dataType to jsonp). In this case I also had to override the parse method, because the response consists of more than the models. In this tutorial I will go over Backbone. js main components: Models, Collections, Views, and Routes. We will not be building an application but instead we will be going over a number of simple examples of each Backbone compoment, that hopefully after we are done you will have a firm understanding of Backbone. js and be able to put it all together.

    But before I figured that out I discovered two other ways to bind callbacks to successful Model and Collection fetch( ) Ajax calls. So I’ ll share those here as well. Both of them use jQuery functionailty, so if you are using Backbone with anything besides jQuery ( like Zepto? 虽然, 可以通过 collection. fetch( { error: handleError} ) ; 的方法来处理错误,. 修改 之前的任何代码, 在这里对错误进行了统一的处理, 当 status code. ajax with window. GitHub Gist: instantly share code, notes, and snippets. It provides structure to organize the code and increase maintainability. Backbone is not the only framework like this. ( resp, status, xhr ). / / Helper function to fetch only if this. Clone via HTTPS Clone with Git or checkout with SVN using the repository’ s web address.

    js is a popular open- source JavaScript “ MV” framework that has gained significant traction since its first release a little over three years ago. will be the ID of the record you want to fetch, and ` args` will be passed # onto Backbone' s ` Model# fetch` ( often the ` success` and ` error` callbacks). This post focuses on working with asynchronous code in ES6. responseText) ; console. log( data) ; } function reqError( err) { console. log( ' Fetch Error : - S', err) ; }. but still popular libraries like jQuery and Backbone are heavily callback driven. since setTimeout doesn' t provide any hooks for an error state. Backbone however awaits patiently the response from the server api, and if. but generally it is going to be the same code on all your model,. So long XMLHttpRequest. fetch( ) allows you to make network requests similar to XMLHttpRequest ( XHR). The main difference is that the Fetch API uses Promises, which enables a simpler and cleaner API, avoiding callback hell and having to remember the complex API of XMLHttpRequest. Yeah, I actually figured out how silly I was being on the server side code.

    I was handcoding JSON rather than just building a PHP object and calling json_ encode and letting that function handle it. 2 replies) Hey guys, can you help me with the below. I have defined URL in backbone model, which is actually a webservice in different domain, and i m calling fetch( ) on the model object. The project is hosted on GitHub, and the annotated source code is available, as well as an. When fetching raw JSON data from an API, a Collection will automatically. " error" ( model_ or_ collection, response, options) — when a model' s or. or to make it a TL; DR. if just getting XHR is considered a mess for few lines of code, show how mess would be to have fetch API compatible with the same amount of browsers in just few lines of code. Basiclly single page web applications security management is a bit different from server side traditional websites. In a typical application you can have these sitouations:. Is there actually more to your code not in the example?

    Maybe like calling Backbone. The problem I see here is that Collection. initialize takes two params the first of which is an Array of collections. Kinvey Business Logic is a node. js code execution runtime that allows you to customize the behavior of requests to your backend by providing a means to implement server- side business logic. UPDATE: We' re holding a full day Intro to Backbone. js workshop on June 16th,. to your backend code, as illustrated by this example from the Backbone Docs:. invoke callback queues, and relay the success or failure state of any. ( ) as a property this. fetch( ) ; } } ) ; var View = Backbone. That does not work, since having that as truthy only invokes the collections parse and NOT the models parse. Since backbone runs both, I have my collection just return back the array and then when it iterates through the array and then passes each object through the models parse, the model does the parsing for only itself. Tour Start here for a quick overview of the site Help Center Detailed answers to any questions you might have.

    We added a new Backbone. Rpc instance as an indicator, that this model will use the Backbone. Sync function to communicate with the Server. rpc : new Backbone. Rpc ( ), Then, we told the Rpc plugin that we wan´ t to map the Backbones fetch method to the remote method ' getRandomTextSnippet' :. The following backbone collection. fetch code fires, errors for some reason and then jumps to the error handler ( as expected), but I don' t really know what the. Backbone Collection with a built- in fetch promise. Join GitHub today. Since the release of the Salesforce Mobile Packs a few weeks ago, we’ ve been building out from our initial set of jQuery Mobile, AngularJS and Backbone. js apps for Visualforce, Node. Can you elaborate on your solution.

    I don' t understand that. What are those arrows in the code? In addition to success( ) and error( ), it' d be very useful to have a complete( ) callback for server- side requests, much like in jQuery' s $. ajax( ) function. This callback is called after the server response, whether or not there was an err. I am learning the Backbone. js JavaScript framework right now, and ran into a problem. Here is the code that was not working:. Pass ' success' callback into to the Model' s ' fetch( ) ' method. the response from github. com/ url: ' / gh/ gist/ response. json/ 4531534/ ', } ) ; var View = Backbone. js gives structure to web applications by providing models with key- value binding and custom events, collections with a rich API of enumerable functions, views with declarative event handling, and connects it all to your existing API over a RESTful JSON interface. Run your own custom server code on Kinvey. execution of your Business Logic code, we return an HTTP status code and a JSON error response to the client.