From f7abf0c9db61621b3f27061debd7983075cdca61 Mon Sep 17 00:00:00 2001
From: Clemens Kofler <clemens@railway.at>
Date: Sun, 27 Jul 2008 16:34:20 -0500
Subject: [PATCH] error_message_on takes an options hash instead of ordered
 parameters [#704 state:resolved] Signed-off-by: Joshua Peek
 <josh@joshpeek.com>

---
 .../helpers/active_record_helper.rb           | 46 ++++++++++++------
 .../lib/action_view/helpers/form_helper.rb    |  4 +-
 .../template/active_record_helper_test.rb     | 48 +++++++++----------
 3 files changed, 58 insertions(+), 40 deletions(-)

diff --git a/actionpack/lib/action_view/helpers/active_record_helper.rb b/actionpack/lib/action_view/helpers/active_record_helper.rb
index 959d8a8563230..ff70ce9aaebe2 100644
--- a/actionpack/lib/action_view/helpers/active_record_helper.rb
+++ b/actionpack/lib/action_view/helpers/active_record_helper.rb
@@ -25,7 +25,7 @@ def input(record_name, method, options = {})
       # Returns an entire form with all needed input tags for a specified Active Record object. For example, if <tt>@post</tt>
       # has attributes named +title+ of type +VARCHAR+ and +body+ of type +TEXT+ then
       #
-      #   form("post") 
+      #   form("post")
       #
       # would yield a form like the following (modulus formatting):
       #
@@ -90,23 +90,41 @@ def form(record_name, options = {})
       end
 
       # Returns a string containing the error message attached to the +method+ on the +object+ if one exists.
-      # This error message is wrapped in a <tt>DIV</tt> tag, which can be extended to include a +prepend_text+ and/or +append_text+
-      # (to properly explain the error), and a +css_class+ to style it accordingly. +object+ should either be the name of an instance variable or
-      # the actual object. As an example, let's say you have a model <tt>@post</tt> that has an error message on the +title+ attribute:
+      # This error message is wrapped in a <tt>DIV</tt> tag, which can be extended to include a <tt>:prepend_text</tt>
+      # and/or <tt>:append_text</tt> (to properly explain the error), and a <tt>:css_class</tt> to style it
+      # accordingly. +object+ should either be the name of an instance variable or the actual object. The method can be
+      # passed in either as a string or a symbol.
+      # As an example, let's say you have a model <tt>@post</tt> that has an error message on the +title+ attribute:
       #
       #   <%= error_message_on "post", "title" %>
       #   # => <div class="formError">can't be empty</div>
       #
-      #   <%= error_message_on @post, "title" %>
+      #   <%= error_message_on @post, :title %>
       #   # => <div class="formError">can't be empty</div>
       #
-      #   <%= error_message_on "post", "title", "Title simply ", " (or it won't work).", "inputError" %>
-      #   # => <div class="inputError">Title simply can't be empty (or it won't work).</div>
-      def error_message_on(object, method, prepend_text = "", append_text = "", css_class = "formError")
+      #   <%= error_message_on "post", "title",
+      #       :prepend_text => "Title simply ",
+      #       :append_text => " (or it won't work).",
+      #       :css_class => "inputError" %>
+      def error_message_on(object, method, *args)
+        options = args.extract_options!
+        unless args.empty?
+          ActiveSupport::Deprecation.warn('error_message_on takes an option hash instead of separate' +
+            'prepend_text, append_text, and css_class arguments', caller)
+
+          options[:prepend_text] = args[0] || ''
+          options[:append_text] = args[1] || ''
+          options[:css_class] = args[2] || 'formError'
+        end
+        options.reverse_merge!(:prepend_text => '', :append_text => '', :css_class => 'formError')
+
         if (obj = (object.respond_to?(:errors) ? object : instance_variable_get("@#{object}"))) &&
           (errors = obj.errors.on(method))
-          content_tag("div", "#{prepend_text}#{errors.is_a?(Array) ? errors.first : errors}#{append_text}", :class => css_class)
-        else 
+          content_tag("div",
+            "#{options[:prepend_text]}#{errors.is_a?(Array) ? errors.first : errors}#{options[:append_text]}",
+            :class => options[:css_class]
+          )
+        else
           ''
         end
       end
@@ -133,7 +151,7 @@ def error_message_on(object, method, prepend_text = "", append_text = "", css_cl
       #
       # To specify the display for one object, you simply provide its name as a parameter.
       # For example, for the <tt>@user</tt> model:
-      # 
+      #
       #   error_messages_for 'user'
       #
       # To specify more than one object, you simply list them; optionally, you can add an extra <tt>:object_name</tt> parameter, which
@@ -157,7 +175,7 @@ def error_messages_for(*params)
         else
           objects = params.collect {|object_name| instance_variable_get("@#{object_name}") }.compact
         end
-        
+
         count  = objects.inject(0) {|sum, object| sum + object.errors.count }
         unless count.zero?
           html = {}
@@ -174,7 +192,7 @@ def error_messages_for(*params)
           I18n.with_options :locale => options[:locale], :scope => [:active_record, :error] do |locale|
             header_message = if options.include?(:header_message)
               options[:header_message]
-            else 
+            else
               object_name = options[:object_name].to_s.gsub('_', ' ')
               object_name = I18n.t(object_name, :default => object_name)
               locale.t :header_message, :count => count, :object_name => object_name
@@ -193,7 +211,7 @@ def error_messages_for(*params)
           ''
         end
       end
-      
+
       private
         def all_input_tags(record, record_name, options)
           input_block = options[:input_block] || default_input_block
diff --git a/actionpack/lib/action_view/helpers/form_helper.rb b/actionpack/lib/action_view/helpers/form_helper.rb
index ada6fa2ea8df3..7bb82ba5bb269 100644
--- a/actionpack/lib/action_view/helpers/form_helper.rb
+++ b/actionpack/lib/action_view/helpers/form_helper.rb
@@ -782,8 +782,8 @@ def radio_button(method, tag_value, options = {})
         @template.radio_button(@object_name, method, tag_value, objectify_options(options))
       end
 
-      def error_message_on(method, prepend_text = "", append_text = "", css_class = "formError")
-        @template.error_message_on(@object, method, prepend_text, append_text, css_class)
+      def error_message_on(method, *args)
+        @template.error_message_on(@object, method, *args)
       end
 
       def error_messages(options = {})
diff --git a/actionpack/test/template/active_record_helper_test.rb b/actionpack/test/template/active_record_helper_test.rb
index dfc30e651a523..e46f95d18bd5d 100644
--- a/actionpack/test/template/active_record_helper_test.rb
+++ b/actionpack/test/template/active_record_helper_test.rb
@@ -10,17 +10,17 @@ class ActiveRecordHelperTest < ActionView::TestCase
       alias_method :body_before_type_cast, :body unless respond_to?(:body_before_type_cast)
       alias_method :author_name_before_type_cast, :author_name unless respond_to?(:author_name_before_type_cast)
     end
-    
+
     User = Struct.new("User", :email)
     User.class_eval do
       alias_method :email_before_type_cast, :email unless respond_to?(:email_before_type_cast)
     end
-    
+
     Column = Struct.new("Column", :type, :name, :human_name)
   end
 
   def setup_post
-    @post = Post.new    
+    @post = Post.new
     def @post.errors
       Class.new {
         def on(field)
@@ -33,12 +33,12 @@ def on(field)
             false
           end
         end
-        def empty?() false end 
-        def count() 1 end 
+        def empty?() false end
+        def count() 1 end
         def full_messages() [ "Author name can't be empty" ] end
       }.new
     end
-    
+
     def @post.new_record?() true end
     def @post.to_param() nil end
 
@@ -58,16 +58,16 @@ def Post.content_columns() [ Column.new(:string, "title", "Title"), Column.new(:
   end
 
   def setup_user
-    @user = User.new    
+    @user = User.new
     def @user.errors
       Class.new {
         def on(field) field == "email" end
-        def empty?() false end 
-        def count() 1 end 
+        def empty?() false end
+        def count() 1 end
         def full_messages() [ "User email can't be empty" ] end
       }.new
     end
-    
+
     def @user.new_record?() true end
     def @user.to_param() nil end
 
@@ -81,7 +81,7 @@ def User.content_columns() [ Column.new(:string, "email", "Email") ] end
 
     @user.email = ""
   end
-  
+
   def protect_against_forgery?
     @protect_against_forgery ? true : false
   end
@@ -92,7 +92,7 @@ def setup
     setup_user
 
     @response = ActionController::TestResponse.new
-    
+
     @controller = Object.new
     def @controller.url_for(options)
       options = options.symbolize_keys
@@ -111,7 +111,7 @@ def test_text_area_with_errors
     assert_dom_equal(
       %(<div class="fieldWithErrors"><textarea cols="40" id="post_body" name="post[body]" rows="20">Back to the hill and over it again!</textarea></div>),
       text_area("post", "body")
-    )    
+    )
   end
 
   def test_text_field_with_errors
@@ -140,7 +140,7 @@ def id() 1 end
       form("post")
     )
   end
-  
+
   def test_form_with_protect_against_forgery
     @protect_against_forgery = true
     @request_forgery_protection_token = 'authenticity_token'
@@ -150,7 +150,7 @@ def test_form_with_protect_against_forgery
       form("post")
     )
   end
-  
+
   def test_form_with_method_option
     assert_dom_equal(
       %(<form action="create" method="get"><p><label for="post_title">Title</label><br /><input id="post_title" name="post[title]" size="30" type="text" value="Hello World" /></p>\n<p><label for="post_body">Body</label><br /><div class="fieldWithErrors"><textarea cols="40" id="post_body" name="post[body]" rows="20">Back to the hill and over it again!</textarea></div></p><input name="commit" type="submit" value="Create" /></form>),
@@ -211,9 +211,9 @@ def test_error_message_on_no_instance_variable
     other_post = @post
     assert_dom_equal "<div class=\"formError\">can't be empty</div>", error_message_on(other_post, :author_name)
   end
-  
-  def test_error_message_on_should_use_options
-    assert_dom_equal "<div class=\"differentError\">beforecan't be emptyafter</div>", error_message_on(:post, :author_name, "before", "after", "differentError")
+
+  def test_error_message_on_with_options_hash
+    assert_dom_equal "<div class=\"differentError\">beforecan't be emptyafter</div>", error_message_on(:post, :author_name, :css_class => 'differentError', :prepend_text => 'before', :append_text => 'after')
   end
 
   def test_error_messages_for_many_objects
@@ -224,10 +224,10 @@ def test_error_messages_for_many_objects
 
     # add the default to put post back in the title
     assert_dom_equal %(<div class="errorExplanation" id="errorExplanation"><h2>2 errors prohibited this post from being saved</h2><p>There were problems with the following fields:</p><ul><li>User email can't be empty</li><li>Author name can't be empty</li></ul></div>), error_messages_for("user", "post", :object_name => "post")
-    
+
     # symbols work as well
     assert_dom_equal %(<div class="errorExplanation" id="errorExplanation"><h2>2 errors prohibited this post from being saved</h2><p>There were problems with the following fields:</p><ul><li>User email can't be empty</li><li>Author name can't be empty</li></ul></div>), error_messages_for(:user, :post, :object_name => :post)
-    
+
     # any default works too
     assert_dom_equal %(<div class="errorExplanation" id="errorExplanation"><h2>2 errors prohibited this monkey from being saved</h2><p>There were problems with the following fields:</p><ul><li>User email can't be empty</li><li>Author name can't be empty</li></ul></div>), error_messages_for(:user, :post, :object_name => "monkey")
 
@@ -242,7 +242,7 @@ def test_error_messages_for_many_objects
     message = "Please fix the following fields and resubmit:"
     assert_dom_equal %(<div class="errorExplanation" id="errorExplanation"><h2>#{header_message}</h2><p>#{message}</p><ul><li>User email can't be empty</li><li>Author name can't be empty</li></ul></div>), error_messages_for(:user, :post, :header_message => header_message, :message => message)
   end
-  
+
   def test_error_messages_for_non_instance_variable
     actual_user = @user
     actual_post = @post
@@ -251,14 +251,14 @@ def test_error_messages_for_non_instance_variable
 
   #explicitly set object
     assert_dom_equal %(<div class="errorExplanation" id="errorExplanation"><h2>1 error prohibited this post from being saved</h2><p>There were problems with the following fields:</p><ul><li>Author name can't be empty</li></ul></div>), error_messages_for("post", :object => actual_post)
-      
+
   #multiple objects
     assert_dom_equal %(<div class="errorExplanation" id="errorExplanation"><h2>2 errors prohibited this user from being saved</h2><p>There were problems with the following fields:</p><ul><li>User email can't be empty</li><li>Author name can't be empty</li></ul></div>), error_messages_for("user", "post", :object => [actual_user, actual_post])
-    
+
   #nil object
     assert_equal '', error_messages_for('user', :object => nil)
   end
-  
+
   def test_form_with_string_multipart
     assert_dom_equal(
       %(<form action="create" enctype="multipart/form-data" method="post"><p><label for="post_title">Title</label><br /><input id="post_title" name="post[title]" size="30" type="text" value="Hello World" /></p>\n<p><label for="post_body">Body</label><br /><div class="fieldWithErrors"><textarea cols="40" id="post_body" name="post[body]" rows="20">Back to the hill and over it again!</textarea></div></p><input name="commit" type="submit" value="Create" /></form>),