Adds a template for API error messages so that it does not depend on AR::Errors serialization.

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@9094 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/controllers/application_controller.rb

@@ -508,15 +508,8 @@ class ApplicationController < ActionController::Base
 
   # Renders API response on validation failure
   def render_validation_errors(object)
-    options = { :status => :unprocessable_entity, :layout => false }
-    options.merge!(case params[:format]
-      when 'xml';  { :xml =>  object.errors }
-      when 'json'; { :json => {'errors' => object.errors} } # ActiveResource client compliance
-      else
-        raise "Unknown format #{params[:format]} in #render_validation_errors"
-      end
-    )
-    render options
+    @error_messages = object.errors.full_messages
+    render :template => 'common/error_messages.api', :status => :unprocessable_entity, :layout => false
   end
 
   # Overrides #default_template so that the api template

app/views/common/error_messages.api.rsb

@@ -0,0 +1,5 @@
+api.array :errors do
+  @error_messages.each do |message|
+    api.error message
+  end
+end

test/integration/api_test/issues_test.rb

@@ -498,7 +498,7 @@ class ApiTest::IssuesTest < ActionController::IntegrationTest
       end
 
       json = ActiveSupport::JSON.decode(response.body)
-      assert json['errors'].include?(['subject', "can't be blank"])
+      assert json['errors'].include?("Subject can't be blank")
     end
   end
 
@@ -674,7 +674,7 @@ class ApiTest::IssuesTest < ActionController::IntegrationTest
       put '/issues/6.json', @parameters, credentials('jsmith')
 
       json = ActiveSupport::JSON.decode(response.body)
-      assert json['errors'].include?(['subject', "can't be blank"])
+      assert json['errors'].include?("Subject can't be blank")
     end
   end