Comments on: How to dynamically update form elements in Rails using Ajax http://nealenssle.com/blog/2007/04/12/how-to-dynamically-update-form-elements-in-rails-using-ajax/ Thu, 28 Aug 2008 08:21:41 +0000 http://wordpress.org/?v=2.0.4 by: Michael http://nealenssle.com/blog/2007/04/12/how-to-dynamically-update-form-elements-in-rails-using-ajax/#comment-669 Tue, 18 Sep 2007 02:27:26 +0000 http://nealenssle.com/blog/2007/04/12/how-to-dynamically-update-form-elements-in-rails-using-ajax/#comment-669 This isn't working for me... When I select an option from the first SELECT field, the second SELECT field just grays out. Any ideas? Thanks. This isn’t working for me…

When I select an option from the first SELECT field, the second SELECT field just grays out. Any ideas?

Thanks.

]]> by: Jake http://nealenssle.com/blog/2007/04/12/how-to-dynamically-update-form-elements-in-rails-using-ajax/#comment-544 Thu, 30 Aug 2007 14:06:05 +0000 http://nealenssle.com/blog/2007/04/12/how-to-dynamically-update-form-elements-in-rails-using-ajax/#comment-544 LOL! Do-over: I’ve heard that IE doesn’t like to replace the <option> contents of a <select>, so the thing to do here is to wrap the <select> in a span/div/whatever and replace the whole <select> each time. LOL! Do-over:

I’ve heard that IE doesn’t like to replace the <option> contents of a <select>, so the thing to do here is to wrap the <select> in a span/div/whatever and replace the whole <select> each time.

]]> by: Jake http://nealenssle.com/blog/2007/04/12/how-to-dynamically-update-form-elements-in-rails-using-ajax/#comment-543 Thu, 30 Aug 2007 14:03:59 +0000 http://nealenssle.com/blog/2007/04/12/how-to-dynamically-update-form-elements-in-rails-using-ajax/#comment-543 I've heard that IE doesn't like to replace the contents of a , so the thing to do here is to wrap the in a span/div/whatever and replace the whole . I’ve heard that IE doesn’t like to replace the contents of a , so the thing to do here is to wrap the in a span/div/whatever and replace the whole .

]]> by: Matt Caza http://nealenssle.com/blog/2007/04/12/how-to-dynamically-update-form-elements-in-rails-using-ajax/#comment-389 Fri, 13 Jul 2007 00:59:43 +0000 http://nealenssle.com/blog/2007/04/12/how-to-dynamically-update-form-elements-in-rails-using-ajax/#comment-389 Hi. I posted a question on this to http://railsforum.com/viewtopic.php?pid=31045#p31045 if you have any thoughts, that would be great... Hi. I posted a question on this to http://railsforum.com/viewtopic.php?pid=31045#p31045
if you have any thoughts, that would be great…

]]> by: Chris Ortman http://nealenssle.com/blog/2007/04/12/how-to-dynamically-update-form-elements-in-rails-using-ajax/#comment-385 Wed, 11 Jul 2007 19:10:38 +0000 http://nealenssle.com/blog/2007/04/12/how-to-dynamically-update-form-elements-in-rails-using-ajax/#comment-385 Does this work in IE? Does this work in IE?

]]> by: matt schick http://nealenssle.com/blog/2007/04/12/how-to-dynamically-update-form-elements-in-rails-using-ajax/#comment-377 Thu, 28 Jun 2007 22:43:54 +0000 http://nealenssle.com/blog/2007/04/12/how-to-dynamically-update-form-elements-in-rails-using-ajax/#comment-377 ack, I can't seem to get the damn line of code to post (probably should have read all the comments before posting). Here is the line of code minus the open close brackets, percent signs, and leading equal sign: options_from_collection_for_select @states, 'id', 'name' ack, I can’t seem to get the damn line of code to post (probably should have read all the comments before posting). Here is the line of code minus the open close brackets, percent signs, and leading equal sign:

options_from_collection_for_select @states, ‘id’, ‘name’

]]> by: matt schick http://nealenssle.com/blog/2007/04/12/how-to-dynamically-update-form-elements-in-rails-using-ajax/#comment-375 Thu, 28 Jun 2007 22:39:54 +0000 http://nealenssle.com/blog/2007/04/12/how-to-dynamically-update-form-elements-in-rails-using-ajax/#comment-375 Thanks for the walk through, saved me loads of time. And to add to it: one way to make this concept even shorter (albeit a bit more terse) is to use the options_from_collection_for_select in the "get_cities.rhtml" file. For the example above just replace the 3 lines with this one line: thanks again! Thanks for the walk through, saved me loads of time. And to add to it: one way to make this concept even shorter (albeit a bit more terse) is to use the options_from_collection_for_select in the “get_cities.rhtml” file. For the example above just replace the 3 lines with this one line:

thanks again!

]]> by: Johan Bryntesson http://nealenssle.com/blog/2007/04/12/how-to-dynamically-update-form-elements-in-rails-using-ajax/#comment-372 Mon, 25 Jun 2007 16:04:50 +0000 http://nealenssle.com/blog/2007/04/12/how-to-dynamically-update-form-elements-in-rails-using-ajax/#comment-372 Grrr!! It's the form that's editing whar I type!!! Again Neal, please edit... The line in the form, embedded in less-than + percent observe_field 'user[list]', :url => {:action => 'updateform'}, :with => 'id' Grrr!! It’s the form that’s editing whar I type!!!
Again Neal, please edit…

The line in the form, embedded in less-than + percent

observe_field ‘user[list]’, :url => {:action => ‘updateform’}, :with => ‘id’

]]> by: Johan Bryntesson http://nealenssle.com/blog/2007/04/12/how-to-dynamically-update-form-elements-in-rails-using-ajax/#comment-371 Mon, 25 Jun 2007 16:02:55 +0000 http://nealenssle.com/blog/2007/04/12/how-to-dynamically-update-form-elements-in-rails-using-ajax/#comment-371 Sorry... the line in post #5 starting with {:action => should have read: {:action => 'updateform'}, :with => 'id' %> Neal, please feel free to edit this to distill out the useful parts. If any! Sorry… the line in post #5 starting with {:action =>
should have read:

{:action => ‘updateform’}, :with => ‘id’ %>

Neal, please feel free to edit this to distill out the useful parts. If any!

]]> by: Johan Bryntesson http://nealenssle.com/blog/2007/04/12/how-to-dynamically-update-form-elements-in-rails-using-ajax/#comment-370 Mon, 25 Jun 2007 16:00:42 +0000 http://nealenssle.com/blog/2007/04/12/how-to-dynamically-update-form-elements-in-rails-using-ajax/#comment-370 At last! Excuse my incessant ranting, but I hopa this will be of use to people: In my form I have a SELECT named user[list], and the line {:action => 'updateform'}, :with => 'id' %> The trick is the :with => 'id', to tell the subsequent what to map the select's value to. In the controller, the "updateform" action simply reads: @user = User.find(params[:id]) And finally, the "updateform.rjs" consists of: page.replace_html 'formpartial', :partial => 'form', :object => @user Which automagically repaints the form (which itself is a partial) with the values for the @user object. This may be old hat for a lot of people, but I have been cruising the net for three days looking for this solution. So again: hope this helps someone! Best, Johan At last! Excuse my incessant ranting, but I hopa this will be of use to people:

In my form I have a SELECT named user[list], and the line
{:action => ‘updateform’}, :with => ‘id’ %>

The trick is the :with => ‘id’, to tell the subsequent what to map the select’s value to.

In the controller, the “updateform” action simply reads:
@user = User.find(params[:id])

And finally, the “updateform.rjs” consists of:
page.replace_html ‘formpartial’, :partial => ‘form’, :o bject => @user

Which automagically repaints the form (which itself is a partial) with the values for the @user object.

This may be old hat for a lot of people, but I have been cruising the net for three days looking for this solution. So again: hope this helps someone!

Best,
Johan

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