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Class: ActionDispatch::MiddlewareStack

Relationships & Source Files
Namespace Children
Classes:
InstrumentationProxy, Middleware
Extension / Inclusion / Inheritance Descendants
Subclasses:
ActionController::MiddlewareStack
Super Chains via Extension / Inclusion / Inheritance
Instance Chain:
self, ::Enumerable
Inherits: Object
Defined in: actionpack/lib/action_dispatch/middleware/stack.rb

Constant Summary

::Enumerable - Included

INDEX_WITH_DEFAULT

Class Method Summary

Instance Attribute Summary

::Enumerable - Included

#many?

Returns true if the enumerable has more than 1 element.

Instance Method Summary

::Enumerable - Included

#compact_blank

Returns a new ::Array without the blank items.
#exclude?

The negative of the Enumerable#include?.
#excluding

Returns a copy of the enumerable excluding the specified elements.
#including

Returns a new array that includes the passed elements.
#index_by

Convert an enumerable to a hash, using the block result as the key and the element as the value.
#index_with

Convert an enumerable to a hash, using the element as the key and the block result as the value.
#pick

Extract the given key from the first element in the enumerable.
#pluck

Extract the given key from each element in the enumerable.
#sum

Calculates a sum from the elements.
#without

Alias for #excluding.

Constructor Details

.new(*args) {|_self| ... } ⇒ MiddlewareStack

Yields:

  • (_self)

Yield Parameters:

  • _self (MiddlewareStack) —

    the object that the method was called on

[ GitHub ] 

  


# File 'actionpack/lib/action_dispatch/middleware/stack.rb', line 70



def initialize(*args)
  @middlewares = []
  yield(self) if block_given?
end


  







Instance Attribute Details



  

    #middlewares   (rw)
  

  [ GitHub ]


  

  


# File 'actionpack/lib/action_dispatch/middleware/stack.rb', line 68



attr_accessor :middlewares


  







Instance Method Details



  

    #[](i)  
  

  [ GitHub ]


  

  


# File 'actionpack/lib/action_dispatch/middleware/stack.rb', line 87



def [](i)
  middlewares[i]
end


  








  

    #build(app = nil, &block)  
  

  [ GitHub ]


  

  


# File 'actionpack/lib/action_dispatch/middleware/stack.rb', line 148



def build(app = nil, &block)
  instrumenting = ActiveSupport::Notifications.notifier.listening?(InstrumentationProxy::EVENT_NAME)
  middlewares.freeze.reverse.inject(app || block) do |a, e|
    if instrumenting
      e.build_instrumented(a)
    else
      e.build(a)
    end
  end
end


  








  

    #delete(target)  
  

  [ GitHub ]


  

  


# File 'actionpack/lib/action_dispatch/middleware/stack.rb', line 121



def delete(target)
  middlewares.delete_if { |m| m.klass == target }
end


  








  

    #each  
  

  [ GitHub ]


  

  


# File 'actionpack/lib/action_dispatch/middleware/stack.rb', line 75



def each
  @middlewares.each { |x| yield x }
end


  








  

    #initialize_copy(other)  
  

  [ GitHub ]


  

  


# File 'actionpack/lib/action_dispatch/middleware/stack.rb', line 96



def initialize_copy(other)
  self.middlewares = other.middlewares.dup
end


  








  

    #insert(index, klass, *args, &block)  
    Also known as: #insert_before
  

  [ GitHub ]


  

  


# File 'actionpack/lib/action_dispatch/middleware/stack.rb', line 100



def insert(index, klass, *args, &block)
  index = assert_index(index, :before)
  middlewares.insert(index, build_middleware(klass, args, block))
end


  








  

    #insert_after(index, *args, &block)  
  

  [ GitHub ]


  

  


# File 'actionpack/lib/action_dispatch/middleware/stack.rb', line 108



def insert_after(index, *args, &block)
  index = assert_index(index, :after)
  insert(index + 1, *args, &block)
end


  








  

    #insert_before(index, klass, *args, &block)  
  



  

    

Alias for #insert.


  



  [ GitHub ]


  

  


# File 'actionpack/lib/action_dispatch/middleware/stack.rb', line 106



alias_method :insert_before, :insert


  








  

    #last  
  

  [ GitHub ]


  

  


# File 'actionpack/lib/action_dispatch/middleware/stack.rb', line 83



def last
  middlewares.last
end


  








  

    #move(target, source)  
    Also known as: #move_before
  

  [ GitHub ]


  

  


# File 'actionpack/lib/action_dispatch/middleware/stack.rb', line 125



def move(target, source)
  source_index = assert_index(source, :before)
  source_middleware = middlewares.delete_at(source_index)

  target_index = assert_index(target, :before)
  middlewares.insert(target_index, source_middleware)
end


  








  

    #move_after(target, source)  
  

  [ GitHub ]


  

  


# File 'actionpack/lib/action_dispatch/middleware/stack.rb', line 135



def move_after(target, source)
  source_index = assert_index(source, :after)
  source_middleware = middlewares.delete_at(source_index)

  target_index = assert_index(target, :after)
  middlewares.insert(target_index + 1, source_middleware)
end


  








  

    #move_before(target, source)  
  



  

    

Alias for #move.


  



  [ GitHub ]


  

  


# File 'actionpack/lib/action_dispatch/middleware/stack.rb', line 133



alias_method :move_before, :move


  








  

    #size  
  

  [ GitHub ]


  

  


# File 'actionpack/lib/action_dispatch/middleware/stack.rb', line 79



def size
  middlewares.size
end


  








  

    #swap(target, *args, &block)  
  

  [ GitHub ]


  

  


# File 'actionpack/lib/action_dispatch/middleware/stack.rb', line 114



def swap(target, *args, &block)
  index = assert_index(target, :before)
  insert(index, *args, &block)
  middlewares.delete_at(index + 1)
end


  








  

    #unshift(klass, *args, &block)  
  

  [ GitHub ]


  

  


# File 'actionpack/lib/action_dispatch/middleware/stack.rb', line 91



def unshift(klass, *args, &block)
  middlewares.unshift(build_middleware(klass, args, block))
end


  








  

    #use(klass, *args, &block)  
  

  [ GitHub ]


  

  


# File 'actionpack/lib/action_dispatch/middleware/stack.rb', line 143



def use(klass, *args, &block)
  middlewares.push(build_middleware(klass, args, block))
end