# Field\_error\_proc

**URL:** <https://www.ruby-forum.com/t/field-error-proc/184484>\
**Category:** Rails\
**Created:** [March 3, 2010, 10:49am UTC](https://www.ruby-forum.com/t/field-error-proc/184484 "2010-03-03T10:49:08Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![tom-mac](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/bc8723/32.png) [@tom-mac](https://www.ruby-forum.com/u/tom-mac)\
**Post date:** [March 3, 2010, 10:49am UTC](https://www.ruby-forum.com/t/field-error-proc/184484/1 "2010-03-03T10:49:08Z")

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Hi  
I have in my environment  
ActionView::Base.field\_error\_proc = Proc.new { |html\_tag, instance|  
“\<span class=“fieldWithErrors”\>#{html\_tag}” }

```
It is working perfectly. But what I need is only for the login form

```

I have to change this and need to show only the flash error message. Is  
this possible.

Thanks  
Tom

---

<div class="post-metadata">

**Author:** ![tom-mac](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/bc8723/32.png) [@tom-mac](https://www.ruby-forum.com/u/tom-mac)\
**Post date:** [March 4, 2010, 12:49pm UTC](https://www.ruby-forum.com/t/field-error-proc/184484/2 "2010-03-04T12:49:11Z")

</div>

Hi  
I can’t solve this. could anybody please give a solution?

Tom