Custom form error messages

rubyonrails-talk
1

Hi,

What do I have to override in order to be able to have the error message of each field in front of the input field?

I haven't been able to find anything similar on google. All I've found is how to override the container around the input field.

  ActionView::Base.field_error_proc = Proc.new { |html_tag, instance| "<span class=\"fieldWithErrors\">#{html_tag}</span>" }

Or in here do we have access of the error message of the current field?

Greg

2

No need to overwrite anything. You can simply access the @resource.errors hash and display the error if there is one…

<%= f.label(:author) %>

<% if @comment.errors[:author] %>

<%= @comment.errors[:author] =>
<% end %>

<% f.text_field(:author, :size=>20, :maxlength=>250) %>
3

Tim Shaffer wrote in post #968409:

No need to overwrite anything. You can simply access the @resource.errors hash and display the error if there is one...

<%= f.label(:author) %> <% if @comment.errors[:author] %>   <%= @comment.errors[:author] => <% end %> <% f.text_field(:author, :size=>20, :maxlength=>250) %>

Cool! Thanks!

4

I have a problem with my bogus fields no longer highlighted by fieldWithErrors.

In the railscasts video it works, but not on my app that I am currently upgrading from 2.x to 3.0. In railscasts Ryan doesn't have to test manually if the field has an error.

Anyone run into this issue?

5

My bad I just realized that they switched from camelCase css naming to underscores.

I think Rails 3 introduced too many insignificant changes that are a pain in the butt to track.