Enhance documentation for observe_field. Closes #9808 [RubyRedRick, danger]
git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@7901 5ecf4fe2-1ee6-0310-87b1-e25e094e27de
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@ -315,7 +315,16 @@ module ActionView
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# <tt>:url</tt>:: +url_for+-style options for the action to call
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# when the field has changed.
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# <tt>:function</tt>:: Instead of making a remote call to a URL, you
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# can specify a function to be called instead.
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# can specify javascript code to be called instead.
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# Note that the value of this option is used as the
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# *body* of the javascript function, a function definition
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# with parameters named element and value will be generated for you
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# for example:
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# observe_field("glass", :frequency => 1, :function => "alert('Element changed')")
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# will generate:
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# new Form.Element.Observer('glass', 1, function(element, value) {alert('Element changed')})
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# The element parameter is the DOM element being observed, and the value is its value at the
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# time the observer is triggered.
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#
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# Additional options are:
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# <tt>:frequency</tt>:: The frequency (in seconds) at which changes to
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