From c5d54be746473ce5610e5e6de51f6b9d2495c935 Mon Sep 17 00:00:00 2001
From: Daniel Lopes <danielvlopes@gmail.com>
Date: Tue, 3 May 2011 11:39:27 -0300
Subject: fix select_tag to have the same behavior of select

---
 .../lib/action_view/helpers/form_tag_helper.rb     | 22 ++++++++++++++++------
 1 file changed, 16 insertions(+), 6 deletions(-)

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

diff --git a/actionpack/lib/action_view/helpers/form_tag_helper.rb b/actionpack/lib/action_view/helpers/form_tag_helper.rb
index 49aa434020..9e0f8f32b7 100644
--- a/actionpack/lib/action_view/helpers/form_tag_helper.rb
+++ b/actionpack/lib/action_view/helpers/form_tag_helper.rb
@@ -74,6 +74,8 @@ module ActionView
       # ==== Options
       # * <tt>:multiple</tt> - If set to true the selection will allow multiple choices.
       # * <tt>:disabled</tt> - If set to true, the user will not be able to use this input.
+      # * <tt>:include_blank</tt> - If set to true, an empty option will be create
+      # * <tt>:prompt</tt> - Create a prompt option with blank value and the text asking user to select something
       # * Any other key creates standard HTML attributes for the tag.
       #
       # ==== Examples
@@ -99,18 +101,26 @@ module ActionView
       #   # => <select class="form_input" id="access" multiple="multiple" name="access[]"><option>Read</option>
       #   #    <option>Write</option></select>
       #
+      #   select_tag "people", options_from_collection_for_select(@people, "id", "name"), :include_blank => true
+      #   # => <select id="people" name="people"><option value=""></option><option value="1">David</option></select>
+      #
+      #   select_tag "people", options_from_collection_for_select(@people, "id", "name"), :prompt => "Select something"
+      #   # => <select id="people" name="people"><option value="">Select something</option><option value="1">David</option></select>
+      #
       #   select_tag "destination", "<option>NYC</option><option>Paris</option><option>Rome</option>", :disabled => true
       #   # => <select disabled="disabled" id="destination" name="destination"><option>NYC</option>
       #   #    <option>Paris</option><option>Rome</option></select>
       def select_tag(name, option_tags = nil, options = {})
         html_name = (options[:multiple] == true && !name.to_s.ends_with?("[]")) ? "#{name}[]" : name
-        if blank = options.delete(:include_blank)
-          if blank.kind_of?(String)
-            option_tags = "<option value=\"\">#{blank}</option>".html_safe + option_tags
-          else
-            option_tags = "<option value=\"\"></option>".html_safe + option_tags
-          end
+
+        if options.delete(:include_blank)
+          option_tags = "<option value=\"\"></option>".html_safe + option_tags
+        end
+
+        if prompt = options.delete(:prompt)
+          option_tags = "<option value=\"\">#{prompt}</option>".html_safe + option_tags
         end
+
         content_tag :select, option_tags, { "name" => html_name, "id" => sanitize_to_id(name) }.update(options.stringify_keys)
       end
 
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