How to override one method of AssetTagHelper

rubyonrails-talk
1

I created a file ./lib/action_view/helpers/asset_tag_helper.rb

and put in it only the method I want to override. like this

Don't. Create lib/my_module.rb and then include MyModule into
ActionView::Base. Or it might be more convenient to do this in
application_helper

2

Thank you, you are really right I should put it in my application_helper. But Here we will have a lot of projets and I want to share this kind of changes to all teams. So that's why I would like to ultimatly put it in a gem.

So I'm curious to see how you would include mymodule on ActionView::Base.

Thanks in advance

Frederick Cheung wrote:

3

Thank you, you are really right I should put it in my application_helper. But Here we will have a lot of projets and I want to share this kind of changes to all teams. So that's why I would like to ultimatly put it in a gem.

So I'm curious to see how you would include mymodule on ActionView::Base.

ActionView::Base.send :include, MyModule

With a plugin you'd typically put this in the plugin's init.rb

Fred

4

Hi,

In our project we are using lib file as suggested

file name would be: lib/action_view_ext.rb

module ActionView   module Helpers #:nodoc:     module AssetTagHelper       def image_path(source)         compute_public_path(source, 'images')       end     end   end end

the best way to include the file !always! (doesn't matter if the application helper is loaded or not) is to add one line at the end of the

config/environment.rb

the line would be:

require 'lib/action_view_ext.rb'

Cheers

5

Thanks a lot for the quick response!

BTW the reason why I want to override a method is because I need to support images for different locale.

for instance :

logo_fr.gif (for french) logo_en.gif (for of course english)

In my view I want something like :

<% image_tag('logo.gif', :locale => cookies[:locale])%>

any better way?

Thanks again

6

In my view I want something like :

<% image_tag('logo.gif', :locale => cookies[:locale])%>

any better way?

Will all the pictures on the site be localized? Probably not - maybe it would be better if you create a method called something like

image_localized_tag

in your application helper. It could take "locale" from cookie and change passed file name (locale isn't parameter now). After changing the name it could just call image_tag and return the result.

This is just a suggestion - IMHO it's easier to implement and cleaner later on for other developers - some of them may expect different behaviour from image_tag

cheers

7

After rethinking of it that's what I plan to do. Just wnat to make sure it is the right way and I wanted assements of experts.

Thank you very much.