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: error_message_on takes an options hash instead of ordered parameters
 [#704 state:resolved] Signed-off-by: Joshua Peek <josh@joshpeek.com>

---
 .../action_view/helpers/active_record_helper.rb    | 46 +++++++++++++++-------
 1 file changed, 32 insertions(+), 14 deletions(-)

(limited to 'actionpack/lib/action_view/helpers/active_record_helper.rb')

diff --git a/actionpack/lib/action_view/helpers/active_record_helper.rb b/actionpack/lib/action_view/helpers/active_record_helper.rb
index 959d8a8563..ff70ce9aae 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 @@ module ActionView
       # 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 @@ module ActionView
       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 @@ module ActionView
       #
       # 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 @@ module ActionView
         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 @@ module ActionView
           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 @@ module ActionView
           ''
         end
       end
-      
+
       private
         def all_input_tags(record, record_name, options)
           input_block = options[:input_block] || default_input_block
-- 
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