Commits on Mar 18, 2016

1. [FEATURE ds-improved-ajax] Finer control over customizing a request …

   Though `ajax()` (and `ajaxOptions()`) of `DS.RESTAdapter` are marked as
   private, they have been overwritten in many applications, since there is
   currently no other way to customize the request.
   
   This feature adds new public methods to `DS.RESTAdapter`, which allow to
   customize the properties of a request:
   
   - `methodForRequest` to get the HTTP verb
   - `urlForRequest` to get the URL
   - `headersForRequest` to get the headers
   - `dataForRequest` to get the data (query params or request body)
   
   The `params` hash passed to those methods has all the properties with
   which the corresponding `find`, `createRecord`, `findQuery`, ...  call
   have been invoked: store, type, snapshot(s), id(s) and query. The
   `requestType` property indicates which method is requested; the possible
   values are:
   
   - `createRecord`
   - `updateRecord`
   - `deleteRecord`
   - `query`
   - `queryRecord`
   - `findRecord`
   - `findAll`
   - `findMany`
   - `findHasMany`
   - `findBelongsTo`
   
   Performing the actual AJAX request is handled by the `_makeRequest`
   method, which is similar to the existing `ajax` method: it makes the
   request using `jQuery.ajax` and attaches success and failure handlers.
   
   ---
   
   Say your API handles creation of resources via PUT, this can now be
   customized as follows:
   
   ``` js
   // adapters/application.js
   import DS from 'ember-data';
   
   export DS.RESTAdapter.extend({
     methodForRequest: function(params) {
       if (params.requestType === 'createRecord') {
         return "PUT";
       }
   
       return this._super(...arguments);
     }
   });
   ```

   

   pangratz committed Mar 18, 2016
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