feat($resource): collapse empty suffix parameters correctly

Previously only repeated `/` delimiters were collapsed into a
single `/`.  Now, the sequence `/.` at the end of the template, i.e.
only followed by a sequence of word characters, is collapsed into a single
`.`. This makes it easier to support suffixes on resource URLs.
For example, given a resource template of `/some/path/:id.:format`, if
the `:id` is `""` but format `"json"` then the URL is now
`/some/path.json`, rather than `/some/path/.json`.

BREAKING CHANGE: A `/` followed by a `.`, in the last segment of the
URL template is now collapsed into a single `.` delimiter. For example:
`users/.json` will become `users.json`. If your server relied upon this
sequence then it will no longer work. In this case you can now escape the
`/.` sequence with `/\.`

1 files changed, 14 insertions, 1 deletions

diff --git a/src/ngResource/resource.js b/src/ngResource/resource.js
index 3eb4e79e..a2e915e8 100644
--- a/src/ngResource/resource.js
+++ b/src/ngResource/resource.js
@@ -34,6 +34,13 @@
  *   `http://example.com:8080/api`), you'll need to escape the colon character before the port
  *   number, like this: `$resource('http://example.com\\:8080/api')`.
  *
+ *   If you are using a url with a suffix, just add the suffix, like this: 
+ *   `$resource('http://example.com/resource.json')` or `$resource('http://example.com/:id.json')
+ *   or even `$resource('http://example.com/resource/:resource_id.:format')` 
+ *   If the parameter before the suffix is empty, :resource_id in this case, then the `/.` will be
+ *   collapsed down to a single `.`.  If you need this sequence to appear and not collapse then you
+ *   can escape it with `/\.`.
+ *
  * @param {Object=} paramDefaults Default values for `url` parameters. These can be overridden in
  *   `actions` methods. If any of the parameter value is a function, it will be executed every time
  *   when a param value needs to be obtained for a request (unless the param was overridden).
@@ -356,7 +363,13 @@ angular.module('ngResource', ['ng']).
         });
 
         // strip trailing slashes and set the url
-        config.url = url.replace(/\/+$/, '');
+        url = url.replace(/\/+$/, '');
+        // then replace collapse `/.` if found in the last URL path segment before the query
+        // E.g. `http://url.com/id./format?q=x` becomes `http://url.com/id.format?q=x`
+        url = url.replace(/\/\.(?=\w+($|\?))/, '.');
+        // replace escaped `/\.` with `/.`
+        config.url = url.replace(/\/\\\./, '/.');
+          
 
         // set params - delegate param encoding to $http
         forEach(params, function(value, key){