Can RoR handle AJAX Response by Static Javascript code?

rubyonrails-talk
1

So it looks like on RoR, when Ajax (using form_remote_tag) returns a success code, Javascript is also returned to handle the visual effects.

using Fiddler, I do see the following response:

    try {     Element.update("vote_score", "Score 58");     $("vote_score").visualEffect("highlight");     } catch (e) { alert('RJS error:\n\n' + e.toString()); alert('Element.update(\"vote_score\", \"Score 58\");\n$(\"vote_score\").visualEffect(\"highlight\");'); throw e }

Will there be situation where the code is quite big (like 1 or 2k) that RJS can use some sort of static Javascript already loaded to handle the effect?

Is there any other ways to use static Javascript already loaded with the page? Must it be just raw Javascript and use the Prototype's Ajax success response to call the static Javascript code, or can it be some Rails mechanism related to RJS?

2

Hi Jian Lin,

3

Bill Walton wrote:

Hi Jian Lin,

Will there be situation where the code is quite big (like 1 or 2k) that RJS can use some sort of static Javascript already loaded to handle the effect?

You can call any loaded Javascript function, including ones you've coded yourself, using page.call from an RJS template or render block. Cody Fauser's "RJS Templates" PDF, available for $10 at O'Reilly, is still the best source on RJS IMHO.

But why use RJS here, which tends to encourage poor-quality JavaScript programming? Heck, why use Rails and Ajax at all? If the JavaScript is static, just do the whole thing on the client side.

HTH, Bill

Best,