Rakefile

You can also specify a limited list of actions that will use the filter:

Before Filter Conditions

You can pass a condition which must be satisfied before your filter will run using :if and :unless :

 
before :authenticate, :unless => :logged_in? 

The condition can be a Symbol representing a message to send or a Proc which will be called.

Auto-Reload a very-flat app

Auto-Reload a—very-flat app

 
Merb::BootLoader.before_app_loads do 
  Merb.push_path(:application, Merb.root, File.basename(__FILE__)) 
end 

Custom Rake task

Custom Rake task

rakefile

Also of note, if you generated an app before the new style of merb-freezer, you’ll want to remove the freeze code inside your Rakefile. Otherwise you’ll get errors like “passing in 3 arguments for 2!”

1. Create a directory in your config folder named ‘initializers’
2. Add the following code to the bottom of your config/init.rb file:

1. Create a directory in your config folder named ‘initializers’

2. Add the following code to the bottom of your config/init.rb file:

 
  Dir[Merb.root / 'config' / 'initializers' / '*.rb'] do |initializer| 
    load(initializer) 
  end 

Before Filter with Arguments

Rails-style Initializers

Sometimes you’ll want to initialize a few things when your application starts. If you’re a neat freak, Rails-style initializers may be of use to you. It’s very simple to set this up in Merb:

1. Create a directory in your config folder named ‘initializers’ 2. Add the following code to the bottom of your config/init.rb file:

Dir[Merb.root / 'config' / 'initializers' / '*.rb'] do |initializer| 
  load(initializer) 
end

You’re done! It’s easy, and it keeps things clean.

before filter with arguments

You can also pass arguments to your before filter method using :with => [], like this:

before filter with arguments You can also pass arguments to your before filter method using :with => [], like this:

You can also pass arguments to your before filter method using :with => [], like this:

 
def foo(bar) 
  bar == "baz"  
end 

 
before :foo, :with => "baz"  

how to write a Merb plugin

merb-gen plugin merb_awesome

before :authenticate, :exclude => :new

before :authenticate, :only => [:create, :update, :destroy, :new]

use_test :rspec, "foo_fixtures"    # dependency "foo_fixtures"

use_test :rspec, "foo_fixtures"    # dependency "foo_fixtures"

For more info read this blog post

use_test :rspec, "foo_fixtures"    # dependency "foo_fixtures"</pre 
 
	
how to freeze your Merb app
 
 
 
	
read more there
 

use_test dependencies

use_test :rspec, "foo_fixtures"    # dependency "foo_fixtures"

before filter

• h3. before filter

before filter

=before filter=

If you wish to use an action before filter but want it to be used on all the actions but one, you will need to use the exclude option:

before :authenticate, :exclude => :new

Note that Rails uses

:except => :new

:exclude => :new

before :authenticate, :exclude => :new

before :authenticate, :only => [:create, :update, :destroy, :new]

you can also specify a limited list of actions that will use the filter:

or before :authenticate, :only => [:create, :update, :destroy, :new]

or