Added the possibility of passing nil to UrlHelper#link_to to use the link itself as the name

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@338 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

actionpack/CHANGELOG

@@ -1,3 +1,8 @@
+*SVN*
+
+* Added the possibility of passing nil to UrlHelper#link_to to use the link itself as the name
+
+
 *1.2.0* (January 4th, 2005)
 
 * Added MemCacheStore for storing session data in Danga's MemCache system [Bob Cottrell]

actionpack/lib/action_controller/filters.rb

@@ -130,15 +130,15 @@ module ActionController #:nodoc:
       # The passed <tt>filters</tt> will be appended to the array of filters that's run _before_ actions
       # on this controller are performed.
       def append_before_filter(*filters, &block)
-          filters << block if block_given?
-          append_filter_to_chain("before", filters)
+        filters << block if block_given?
+        append_filter_to_chain("before", filters)
       end
 
       # The passed <tt>filters</tt> will be prepended to the array of filters that's run _before_ actions
       # on this controller are performed.
       def prepend_before_filter(*filters, &block)
-          filters << block if block_given?
-          prepend_filter_to_chain("before", filters)
+        filters << block if block_given?
+        prepend_filter_to_chain("before", filters)
       end
 
       # Short-hand for append_before_filter since that's the most common of the two.
@@ -147,15 +147,15 @@ module ActionController #:nodoc:
       # The passed <tt>filters</tt> will be appended to the array of filters that's run _after_ actions
       # on this controller are performed.
       def append_after_filter(*filters, &block)
-          filters << block if block_given?
-          append_filter_to_chain("after", filters)
+        filters << block if block_given?
+        append_filter_to_chain("after", filters)
       end
 
       # The passed <tt>filters</tt> will be prepended to the array of filters that's run _after_ actions
       # on this controller are performed.
       def prepend_after_filter(*filters, &block)
-          filters << block if block_given?
-          prepend_filter_to_chain("after", filters)
+        filters << block if block_given?
+        prepend_filter_to_chain("after", filters)
       end
 
       # Short-hand for append_after_filter since that's the most common of the two.

actionpack/lib/action_view/helpers/url_helper.rb

@@ -13,15 +13,18 @@ module ActionView
 
       # Creates a link tag of the given +name+ using an URL created by the set of +options+. See the valid options in
       # link:classes/ActionController/Base.html#M000021. It's also possible to pass a string instead of an options hash to
-      # get a link tag that just points without consideration. The html_options have a special feature for creating javascript
-      # confirm alerts where if you pass :confirm => 'Are you sure?', the link will be guarded with a JS popup asking that question.
-      # If the user accepts, the link is processed, otherwise not.
+      # get a link tag that just points without consideration. If nil is passed as a name, the link itself will become the name. 
+      # The html_options have a special feature for creating javascript confirm alerts where if you pass :confirm => 'Are you sure?', 
+      # the link will be guarded with a JS popup asking that question. If the user accepts, the link is processed, otherwise not.
       def link_to(name, options = {}, html_options = {}, *parameters_for_method_reference)
         convert_confirm_option_to_javascript!(html_options) unless html_options.nil?
         if options.is_a?(String)
-          content_tag "a", name, (html_options || {}).merge({ "href" => options })
+          content_tag "a", name || options, (html_options || {}).merge({ "href" => options })
         else
-          content_tag("a", name, (html_options || {}).merge({ "href" => url_for(options, *parameters_for_method_reference) }))
+          content_tag(
+            "a", name || url_for(options, *parameters_for_method_reference), 
+            (html_options || {}).merge({ "href" => url_for(options, *parameters_for_method_reference) })
+          )
         end
       end
 

actionpack/test/controller/filters_test.rb

@@ -15,6 +15,24 @@ class FilterTest < Test::Unit::TestCase
       end
   end
   
+  class LimitedFilterController < ActionController::Base
+    before_filter :ensure_login, :for => :show
+
+    def show
+      render_text "ran action"
+    end
+
+    def show_without_filter
+      render_text "ran action without filter"
+    end
+
+    private
+      def ensure_login
+        @ran_filter ||= []
+        @ran_filter << "ensure_login"
+      end
+  end
+  
   class PrependingController < TestController
     prepend_before_filter :wonderful_life
 
@@ -125,6 +143,11 @@ class FilterTest < Test::Unit::TestCase
   def test_running_filters_with_class
     assert test_process(AuditController).template.assigns["was_audited"]
   end
+
+  def test_running_limited_filters
+    assert_equal %w( fire_flash ensure_login ), test_process(LimitedFilterController, "show").template.assigns["ran_filter"]
+    assert_equal %w( fire_flash ), test_process(LimitedFilterController, "show_without_filter").template.assigns["ran_filter"]
+  end
   
   def test_bad_filter
     assert_raises(ActionController::ActionControllerError) { 
@@ -151,9 +174,9 @@ class FilterTest < Test::Unit::TestCase
   end
 
   private
-    def test_process(controller)
+    def test_process(controller, action = "show")
       request = ActionController::TestRequest.new
-      request.action = "show"
+      request.action = action
       controller.process(request, ActionController::TestResponse.new)
     end
 end