At the Forge - RJS Templates
To create a new Rails project called ajaxdemo, type:
Now, let's create a simple controller called showme:
script/generate controller showme
We're not going to have any model in this system, but you still might have to define one or more lines in config/database.yml. Instead, let's create a new view within our showme controller, stored as app/views/showme/index.rhtml, shown in Listing 1.
Listing 1. index.rhtml
So far, we haven't done anything special. Now, however, we're going to do something a bit more sophisticated: send the contents of our text field to the server in an Ajax call. The server's response will be our headline, translated into Pig Latin.
Our updated template is shown in Listing 2. We have made a number of changes, starting with the fact that our form now has an id attribute associated with it, named theForm. The form contains a single element, a text field whose name is future_headline. Note that we need to use the name attribute instead of the id attribute, so that the form element will be submitted with our Ajax call. Also notice that we have changed the name to a Ruby-friendly future_headline (with an underscore), rather than the CSS-friendly future-headline (with a hyphen).
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