Rails - Sep 2010 - Rails 3 + jQuery ; How to show error messages

Hi guys,

can anyone explain how to show error_messages_on (like back in Rails
2 , without Ajax) fields that didnt'' pass the validation the jquery
way.

I googled for about 2 hours now and found nothing. Jquery works fine
and adds the content to my table, but im totally stuck with the whole
error/validation thing.

My form looks like this:

<%= form_for Translation.new , :remote => true do |f| %>
  <table>
	<tr>
		<td>
    		<%= f.label :locale %><br />
    		<%= f.text_field :locale %>

  		</td>
		<td>
	    	<%= f.label :key %><br />
    		<%= f.text_field :key %>
  		</td>
  	</tr>
	<tr>
		<td>
    		<%= f.label :value %><br />
    		<%= f.text_area :value , :rows => 3%>
  		</td>
  		<td>
    		<%= f.label :interpolations %><br />
    		<%= f.text_area :interpolations, :rows => 3 %>
  		</td>
  	</tr>
	<tr>
		<td>
    		<%= f.label :is_proc %><br />
    		<%= f.check_box :is_proc %>
  		</td>
		<td></td>
	</tr>
	</table>
  	<p><%= f.submit t(''translation.create'')
%></p>
<% end %>

Create action like this:
   def create
    if @translation.save
      flash[:notice] = "Successfully created translation."
      respond_to do |format|
        format.html { redirect_to @translation }
        format.js
      end
    else
      respond_to do |format|
        format.html { render :action => ''new''}
        # show what went wrong with jquery
      end
    end
  end

and create.js.erb
/* Insert a notice between the last comment and the comment form */
$("#translation-notice").html(''<div class="flash
notice"><%escape_javascript(flash.delete(:notice))
%></div>'');

/* Add the new comment to the bottom of the comments list */
$("#translations").prepend("<%escape_javascript(render(@translation))
%>");

/* Highlight the new comment */
$("#translation-<%= @translation.id
%>").effect("highlight", {},
3000);

/* Reset the comment form */
$("#new_translation")[0].reset();

Adding validated data works but please give me hint with error
validation thing.

thanks

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the problem is

def create
   if @translation.save
     flash[:notice] = "Successfully created translation."
     respond_to do |format|
       format.html { redirect_to @translation }
       format.js
     end
   else
     respond_to do |format|
       format.html { render :action => ''new''}
       # show what went wrong with jquery
     end
   end

you can pass an action to format.js, apparently since most examples dont
pass anything you didnt notice that format,js is doing this

format.js { render :action => "create"}   and calls a create.js.erb

it does this if you only put format.js but you can render other actions like
this


def create
   if @translation.save
     flash[:notice] = "Successfully created translation."
     respond_to do |format|
       format.html { redirect_to @translation }
       format.js   { render :action => "success"}
     end
   else
     respond_to do |format|
       format.html { render :action => ''new''}
       format.js   { render :action => "failure"}
     end
   end

and have an success.js.erb with code for displaying the "everything went
cool" updates and a failure.js.erb to display the "epic fail"
updates.

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there is no need to add a success or failure actions to the controller, when
rails does not find and action in a controller it tries to display a
template with the corresponding name anyway.

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Thanks mate.

2010/9/27 radhames brito <rbritom-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
>
> the problem is
>
> def create
>    if @translation.save
>      flash[:notice] = "Successfully created translation."
>      respond_to do |format|
>        format.html { redirect_to @translation }
>        format.js
>      end
>    else
>      respond_to do |format|
>        format.html { render :action => ''new''}
>        # show what went wrong with jquery
>      end
>    end
>
> you can pass an action to format.js, apparently since most examples dont
> pass anything you didnt notice that format,js is doing this
>
> format.js { render :action => "create"}   and calls a
create.js.erb
>
> it does this if you only put format.js but you can render other actions
> like this
>
>
>
> def create
>    if @translation.save
>      flash[:notice] = "Successfully created translation."
>      respond_to do |format|
>        format.html { redirect_to @translation }
>        format.js   { render :action => "success"}
>
>      end
>    else
>      respond_to do |format|
>        format.html { render :action => ''new''}
>        format.js   { render :action => "failure"}
>      end
>    end
>
> and have an success.js.erb with code for displaying the "everything
went
> cool" updates and a failure.js.erb to display the "epic
fail" updates.
>
>
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so, rename create.js.erb to success.js.erb and create a failure.js.erb and
refer to format.js in the controller?

2010/9/27 radhames brito <rbritom-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
> there is no need to add a success or failure actions to the controller,
> when rails does not find and action in a controller it tries to display a
> template with the corresponding name anyway.
>
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sure , add the corresponding logic to the failure.js.erb

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refer to them in the create action like i showed , no need to create action
in the controller just the template in the views folder

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