Added tabs between object form and generic content form on PUT/PATCH form

Some extra behaviour to `BrowsableAPIRenderer` to handle PATCH form.
Added PATCH button on generic content PUT form.
Tabs between object form and generic content form on PUT/PATCH form wich are
both allways visible now.

Fix #570
Refs #591

4 files changed, 62 insertions, 26 deletions

diff --git a/rest_framework/renderers.py b/rest_framework/renderers.py
index a6525404..736384d6 100644
--- a/rest_framework/renderers.py
+++ b/rest_framework/renderers.py
@@ -345,12 +345,11 @@ class BrowsableAPIRenderer(BaseRenderer):
         if not self.show_form_for_method(view, method, request, obj):
             return
 
-        if method == 'DELETE' or method == 'OPTIONS':
+        if method in ('DELETE', 'OPTIONS'):
             return True  # Don't actually need to return a form
 
         if not getattr(view, 'get_serializer', None) or not parsers.FormParser in view.parser_classes:
-            media_types = [parser.media_type for parser in view.parser_classes]
-            return self.get_generic_content_form(media_types)
+            return
 
         serializer = view.get_serializer(instance=obj)
         fields = self.serializer_to_form_fields(serializer)
@@ -422,14 +421,17 @@ class BrowsableAPIRenderer(BaseRenderer):
         view = renderer_context['view']
         request = renderer_context['request']
         response = renderer_context['response']
+        media_types = [parser.media_type for parser in view.parser_classes]
 
         renderer = self.get_default_renderer(view)
         content = self.get_content(renderer, data, accepted_media_type, renderer_context)
 
         put_form = self.get_form(view, 'PUT', request)
         post_form = self.get_form(view, 'POST', request)
+        patch_form = self.get_form(view, 'PATCH', request)
         delete_form = self.get_form(view, 'DELETE', request)
         options_form = self.get_form(view, 'OPTIONS', request)
+        generic_content_form = self.get_generic_content_form(media_types)
 
         name = self.get_name(view)
         description = self.get_description(view)
@@ -449,8 +451,10 @@ class BrowsableAPIRenderer(BaseRenderer):
             'available_formats': [renderer.format for renderer in view.renderer_classes],
             'put_form': put_form,
             'post_form': post_form,
+            'patch_form': patch_form,
             'delete_form': delete_form,
             'options_form': options_form,
+            'generic_content_form': generic_content_form,
             'api_settings': api_settings
         })
 
diff --git a/rest_framework/static/rest_framework/js/default.js b/rest_framework/static/rest_framework/js/default.js
index ecaccc0f..bc5b0292 100644
--- a/rest_framework/static/rest_framework/js/default.js
+++ b/rest_framework/static/rest_framework/js/default.js
@@ -3,3 +3,5 @@ prettyPrint();
 $('.js-tooltip').tooltip({
     delay: 1000
 });
+
+$('#form-switcher a:first').tab('show');
\ No newline at end of file
diff --git a/rest_framework/templates/rest_framework/base.html b/rest_framework/templates/rest_framework/base.html
index 8d807574..87e5dc04 100644
--- a/rest_framework/templates/rest_framework/base.html
+++ b/rest_framework/templates/rest_framework/base.html
@@ -147,32 +147,49 @@
                 </div>
                 {% endif %}
 
-                {% if put_form %}
+                {% if 'PUT' in allowed_methods or 'PATCH' in allowed_methods %}
                 <div class="well">
-                    <form action="{{ request.get_full_path }}" method="POST" {% if put_form.is_multipart %}enctype="multipart/form-data"{% endif %} class="form-horizontal">
-                        <fieldset>
-                            <input type="hidden" name="{{ api_settings.FORM_METHOD_OVERRIDE }}" value="PUT" />
-                            {% csrf_token %}
-                            {{ put_form.non_field_errors }}
-                            {% for field in put_form %}
-                                <div class="control-group"> <!--{% if field.errors %}error{% endif %}-->
-                                    {{ field.label_tag|add_class:"control-label" }}
-                                    <div class="controls">
-                                        {{ field }}
-                                        <span class='help-inline'>{{ field.help_text }}</span>
-                                        <!--{{ field.errors|add_class:"help-block" }}-->
-                                    </div>
-                                </div>
-                            {% endfor %}
-                            <div class="form-actions">
-                                <button class="btn btn-primary js-tooltip" title="Make a PUT request on the {{ name }} resource">PUT</button>
-                            </div>
-
-                        </fieldset>
-                    </form>
+                    <ul class="nav nav-pills" id="form-switcher">
+                        {% if put_form %}
+                        <li><a href="#object-form" data-toggle="pill">Object form</a></li>
+                        {% endif %}
+                        <li><a href="#generic-content-form" data-toggle="pill">Generic content form</a></li>
+                    </ul>
+                    <div class="tab-content">
+                        {% if put_form %}
+                        <div class="tab-pane" id="object-form">
+                            {% with form=put_form %}
+                                <form action="{{ request.get_full_path }}" method="POST" {% if form.is_multipart %}enctype="multipart/form-data"{% endif %} class="form-horizontal">
+                                    <fieldset>
+                                        {% include "rest_framework/form.html" %}
+                                        <div class="form-actions">
+                                            <button class="btn btn-primary js-tooltip" name="{{ api_settings.FORM_METHOD_OVERRIDE }}" value="PUT" title="Make a PUT request on the {{ name }} resource">PUT</button>
+                                        </div>
+                                    </fieldset>
+                                </form>
+                            {% endwith %}
+                        </div>
+                        {% endif %}
+                        <div class="tab-pane" id="generic-content-form">
+                            {% with form=generic_content_form %}
+                                <form action="{{ request.get_full_path }}" method="POST" {% if form.is_multipart %}enctype="multipart/form-data"{% endif %} class="form-horizontal">
+                                    <fieldset>
+                                        {% include "rest_framework/form.html" %}
+                                        <div class="form-actions">
+                                            {% if 'PUT' in allowed_methods %}
+                                            <button class="btn btn-primary js-tooltip" name="{{ api_settings.FORM_METHOD_OVERRIDE }}" value="PUT" title="Make a PUT request on the {{ name }} resource">PUT</button>
+                                            {% endif %}
+                                            {% if 'PATCH' in allowed_methods %}
+                                            <button class="btn btn-primary js-tooltip" name="{{ api_settings.FORM_METHOD_OVERRIDE }}" value="PATCH" title="Make a PUT request on the {{ name }} resource">PATCH</button>
+                                            {% endif %}
+                                        </div>
+                                    </fieldset>
+                                </form>
+                            {% endwith %}
+                        </div>
+                    </div>
                 </div>
                 {% endif %}
-
             {% endif %}
 
         </div>
diff --git a/rest_framework/templates/rest_framework/form.html b/rest_framework/templates/rest_framework/form.html
new file mode 100644
index 00000000..dc7acc70
--- /dev/null
+++ b/rest_framework/templates/rest_framework/form.html
@@ -0,0 +1,13 @@
+{% load rest_framework %}
+{% csrf_token %}
+{{ form.non_field_errors }}
+{% for field in form %}
+    <div class="control-group"> <!--{% if field.errors %}error{% endif %}-->
+        {{ field.label_tag|add_class:"control-label" }}
+        <div class="controls">
+            {{ field }}
+            <span class="help-inline">{{ field.help_text }}</span>
+            <!--{{ field.errors|add_class:"help-block" }}-->
+        </div>
+    </div>
+{% endfor %}