Problem with link_to_function resulting rjs error, please help.

Hello all,

i am trying to add some ajax effect to the page and use the link_to_funtion tag to toggle a "comment form" div.

but when i click on the link, firefox gives me error box saying: RJS error TypeError: Effect[effect_class] is not a constructor

after i click OK, it says: $("comment_form").visualEffect("toggle_blind"); $("add_comment").update("Cancel");

here's the code for the div:

<!-- comment_form div--> <%= link_to_function ("Add a comment", nil, :id =>"add_comment") do | page> page[:comment_form].visual_effect :toggle_blind page[:add_comment].replace_html "Cancel" end %> <div id="comment_form" style="display: none;">   <% form_tag :action => 'add_comment', :id =>@place do %>       <%= render :partial => 'comment_form' %>       <%= submit_tag "Submit" %>   <% end %> </div> <!-- comment_form div-->

what is the problem and how do i fix it?

thanks in advance.

I think there may be a bug in Rails... I wanted to use this as well (it's documented in the Rails API docs as an example at as a link_to_function example). I believe it has to do with the use of the toggle_blind method on the $() prototype function -- maybe that method is not being added properly? I tested many different combinations and did find one that worked:

  page.visual_effect :toggle_blind, 'details' <== my div id; same as your "comment_form

Notice that you can't use the element proxy of page[:comment_form] as it winds up returning the $() form which fails. Here are the different variations that I tried:

  page[:details].visual_effect :toggle_blind   page[:details].visual_effect('element', :toggle_blind)   page[:details].visual_effect('details', :toggle_blind)   page[:details].visual_effect :blind   page[:details].toggle_blind

All of the above give that "not a constructor" error.

BUT... Note that a simple "toggle" (view/hide) DOES work:



Correction: some of the error statements give a "$ ('details').toggleBlind is not a function" error...jon