# ApplicationController Plugin

**URL:** <https://www.ruby-forum.com/t/applicationcontroller-plugin/124623>\
**Category:** Rails\
**Created:** [December 31, 2007, 6:34am UTC](https://www.ruby-forum.com/t/applicationcontroller-plugin/124623 "2007-12-31T06:34:19Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Mozmonkey](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/4491bb/32.png) [@Mozmonkey](https://www.ruby-forum.com/u/Mozmonkey)\
**Post date:** [December 31, 2007, 6:34am UTC](https://www.ruby-forum.com/t/applicationcontroller-plugin/124623/1 "2007-12-31T06:34:19Z")

</div>

I’ve created a plugin to generate error pages with a single function  
call. The basic idea is that in your action you could call  
error\_forbidden and an error page would be rendered with the HTTP  
status code 402. This works great so far when called from within an  
action, but when I want to add the call to the “verfy” line, things  
break:

verify :method =\> :post, :only =\>  
[:create, :update, :destroy], :render =\> { :text =\> error\_invalid }

Generates the error message: “undefined method `error\_invalid’ for  
EventsController:Class”

How can I make the methods visible to the controller outside the  
actions? For some reason I haven’t been able to make it work for  
both. Here’s a snippet from the plugin:

# ErrorPage

module ErrorPagePlugin

# 

# The user is forbidden to perform this action

# 

def error\_forbidden(options={})  
options[:title] = options[:title] || “You do not have access to  
perform that action.”  
options[:message] = options[:message] || “Make sure you’re logged in  
and have access to this feature.”  
options[:template] = “errors/forbidden.rhtml”

```
error_page(403, options)

```

end

# 

# Invalid form method (get, put, delete, post)

# 

def error\_invalid(options={})  
options[:title] = options[:title] || “Invalid Action”  
options[:message] = options[:message] || “You have just tried to  
perform an action that is invalid for that item.”  
options[:template] = “errors/invalid.rhtml”

```
error_page(501, options)

```

end

# 

# Generate error page

# 

def error\_page(status=200, options={})  
@status = status  
@title = options[:title]  
@message = options[:message]

```
@override_h1 = true
@page_id = "pg_error"

tmpl = options[:template] || "errors/generic.rhtml"
render :status => status, :template => tmpl

```

end  
end

Thanks,  
Jeremy