method

replace_html

v3.0.9 - Show latest stable - 1 note - Class: ActionView::Helpers::PrototypeHelper::JavaScriptGenerator::GeneratorMethods

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What's this?

replace_html(id, *options_for_render) public

Replaces the inner HTML of the DOM element with the given id.

options_for_render may be either a string of HTML to insert, or a hash of options to be passed to ActionView::Base#render. For example:

# Replace the HTML of the DOM element having ID 'person-45' with the
# 'person' partial for the appropriate object.
# Generates:  Element.update("person-45", "-- Contents of 'person' partial --");
page.replace_html 'person-45', :partial => 'person', :object => @person

Show source

# File actionpack/lib/action_view/helpers/prototype_helper.rb, line 330
          def replace_html(id, *options_for_render)
            call 'Element.update', id, render(*options_for_render)
          end

July 5, 2009

2 thanks

To verify if the element exists before replacing.

Just add this code into a initializer file.

Atention: The code starts at the “module ActionView” and the last “end” has to be copied too.

module ActionView

module Helpers
  module PrototypeHelper
    class JavaScriptGenerator #:nodoc:
      module GeneratorMethods
        def replace_html_if_exists(id, *options_for_render)
          call "if($('#{id}')) Element.update", id, render(*options_for_render)
        end
      end
    end
  end
end

end

replace_html

Related methods

To verify if the element exists before replacing.