Class: Rasti::Web::Controller

Inherits:
Object
  • Object
show all
Extended by:
Forwardable
Defined in:
lib/rasti/web/controller.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(request, response, render) ⇒ Controller

Returns a new instance of Controller.



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# File 'lib/rasti/web/controller.rb', line 12

def initialize(request, response, render)
  @request = request
  @response = response
  @render = render
end

Instance Attribute Details

#render ⇒ Object (readonly)

Returns the value of attribute render.



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# File 'lib/rasti/web/controller.rb', line 10

def render
  @render
end

#request ⇒ Object (readonly)

Returns the value of attribute request.



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# File 'lib/rasti/web/controller.rb', line 10

def request
  @request
end

#response ⇒ Object (readonly)

Returns the value of attribute response.



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# File 'lib/rasti/web/controller.rb', line 10

def response
  @response
end

Class Method Details

.action(action_name) ⇒ Object Also known as: >> 



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# File 'lib/rasti/web/controller.rb', line 20

def action(action_name)
  raise "Undefined action '#{action_name}' in #{name}" unless instance_methods.include? action_name.to_sym
  
  Endpoint.new do |req, res, render|
    controller = new req, res, render
    begin
      call_before_action controller, action_name
      controller.public_send action_name
    rescue => ex
      call_exception_handler controller, ex
    ensure
      call_after_action controller, action_name
    end
  end
end

.after_action(action_name = nil, &block) ⇒ Object 



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# File 'lib/rasti/web/controller.rb', line 42

def after_action(action_name=nil, &block)
  after_action_hooks[action_name] = block
end

.after_action_hooks ⇒ Object 



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# File 'lib/rasti/web/controller.rb', line 74

def after_action_hooks
  @after_action_hooks ||= superclass.respond_to?(:after_action_hooks) ? superclass.after_action_hooks.dup : {}
end

.before_action(action_name = nil, &block) ⇒ Object 



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# File 'lib/rasti/web/controller.rb', line 38

def before_action(action_name=nil, &block)
  before_action_hooks[action_name] = block
end

.before_action_hooks ⇒ Object 



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# File 'lib/rasti/web/controller.rb', line 70

def before_action_hooks
  @before_action_hooks ||= superclass.respond_to?(:before_action_hooks) ? superclass.before_action_hooks.dup : {}
end

.call_after_action(controller, action_name) ⇒ Object 



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# File 'lib/rasti/web/controller.rb', line 55

def call_after_action(controller, action_name)
  hook = after_action_hooks[action_name] || after_action_hooks[nil]
  controller.instance_exec action_name, &hook if hook
end

.call_before_action(controller, action_name) ⇒ Object 



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# File 'lib/rasti/web/controller.rb', line 50

def call_before_action(controller, action_name)
  hook = before_action_hooks[action_name] || before_action_hooks[nil]
  controller.instance_exec action_name, &hook if hook
end

.call_exception_handler(controller, exception) ⇒ Object 



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# File 'lib/rasti/web/controller.rb', line 60

def call_exception_handler(controller, exception)
  exception_class = handled_exceptions.detect { |klass| exception.is_a? klass }
  exception_handler = exception_handlers[exception_class]
  if exception_handler
    controller.instance_exec exception, &exception_handler
  else
    raise exception
  end
end

.exception_handlers ⇒ Object 



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# File 'lib/rasti/web/controller.rb', line 78

def exception_handlers
  @exception_handlers ||= superclass.respond_to?(:exception_handlers) ? superclass.exception_handlers.dup : {}
end

.handled_exceptions ⇒ Object 



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# File 'lib/rasti/web/controller.rb', line 82

def handled_exceptions
  @handled_exceptions ||= ClassAncestrySort.desc exception_handlers.keys
end

.rescue_from(exception_class, &block) ⇒ Object 



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# File 'lib/rasti/web/controller.rb', line 46

def rescue_from(exception_class, &block)
  exception_handlers[exception_class] = block
end