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@@ -1,5 +1,7 @@
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 *Edge*
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+* Added FormTagHelper#image_submit_tag confirm option #784 [Alastair Brunton]
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+
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 * Fixed FormTagHelper#submit_tag with :disable_with option wouldn't submit the button's value when was clicked #633 [Jose Fernandez]
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 * Stopped logging template compiles as it only clogs up the log [DHH]

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@@ -371,6 +371,9 @@ module ActionView
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       # <tt>source</tt> is passed to AssetTagHelper#image_path
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       #
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       # ==== Options
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+      # * <tt>:confirm => 'question?'</tt> - This will add a JavaScript confirm
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+      #   prompt with the question specified. If the user accepts, the form is
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+      #   processed normally, otherwise no action is taken.
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       # * <tt>:disabled</tt> - If set to true, the user will not be able to use this input.
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       # * Any other key creates standard HTML options for the tag.
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       #
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@@ -387,6 +390,13 @@ module ActionView
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       #   image_submit_tag("agree.png", :disabled => true, :class => "agree-disagree-button")
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       #   # => <input class="agree-disagree-button" disabled="disabled" src="/images/agree.png" type="image" />
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       def image_submit_tag(source, options = {})
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+        options.stringify_keys!
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+
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+        if confirm = options.delete("confirm")
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+          options["onclick"] ||= ''
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+          options["onclick"] += "return #{confirm_javascript_function(confirm)};"
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+        end
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+
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         tag :input, { "type" => "image", "src" => path_to_image(source) }.update(options.stringify_keys)
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       end
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@@ -241,6 +241,13 @@ class FormTagHelperTest < ActionView::TestCase
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       submit_tag("Save", :confirm => "Are you sure?")
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     )
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   end
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+  
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+  def test_image_submit_tag_with_confirmation
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+    assert_dom_equal(
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+      %(<input type="image" src="/images/save.gif" onclick="return confirm('Are you sure?');"/>),
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+      image_submit_tag("save.gif", :confirm => "Are you sure?")
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+    )
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+  end
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   def test_pass
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     assert_equal 1, 1