Class: Utopia::Middleware::Controller::Base

Inherits:
Object
  • Object
show all
Defined in:
lib/utopia/middleware/controller.rb

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(controller) ⇒ Base

Returns a new instance of Base.



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# File 'lib/utopia/middleware/controller.rb', line 84

def initialize(controller)
	@_controller = controller
	@_actions = {}

	methods.each do |method_name|
		next unless method_name.match(/on_(.*)$/)

		action($1.split("_")) do |path, request|
			# LOG.debug("Controller: #{method_name}")
			self.send(method_name, path, request)
			
			# Don't pass the result back, instead use pass! or respond!
			nil
		end
	end
end

Class Method Details

.base_path ⇒ Object 



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# File 'lib/utopia/middleware/controller.rb', line 213

def self.base_path
	self.const_get(:BASE_PATH)
end

.require_local(path) ⇒ Object 



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# File 'lib/utopia/middleware/controller.rb', line 221

def self.require_local(path)
	require File.join(base_path, path)
end

.uri_path ⇒ Object 



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# File 'lib/utopia/middleware/controller.rb', line 217

def self.uri_path
	self.const_get(:URI_PATH)
end

Instance Method Details

#action(path, options = {}, &block) ⇒ Object 



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# File 'lib/utopia/middleware/controller.rb', line 101

def action(path, options = {}, &block)
	cur = @_actions

	path.reverse.each do |name|
		cur = cur[name] ||= {}
	end

	cur[:action] = Proc.new(&block)
end

#call(env) ⇒ Object 



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# File 'lib/utopia/middleware/controller.rb', line 150

def call(env)
	@_controller.app.call(env)
end

#fail!(error = :bad_request) ⇒ Object 



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# File 'lib/utopia/middleware/controller.rb', line 166

def fail!(error = :bad_request)
	respond! error
end

#ignore! ⇒ Object 



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# File 'lib/utopia/middleware/controller.rb', line 158

def ignore!
	throw :response, nil
end

#lookup(path) ⇒ Object 



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# File 'lib/utopia/middleware/controller.rb', line 111

def lookup(path)
	cur = @_actions

	path.components.reverse.each do |name|
		cur = cur[name]

		return nil if cur == nil

		if action = cur[:action]
			return action
		end
	end
end

#passthrough(path, request) ⇒ Object

Given a request, call an associated action if one exists.



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# File 'lib/utopia/middleware/controller.rb', line 126

def passthrough(path, request)
	action = lookup(path)

	if action
		variables = request.controller
		clone = self.dup
		
		variables << clone
		
		response = catch(:response) do
			clone.instance_exec(path, request, &action)
			
			# By default give nothing - i.e. keep on processing:
			nil
		end
		
		if response
			return clone.respond_with(*response)
		end
	end

	return nil
end

#process!(path, request) ⇒ Object 



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# File 'lib/utopia/middleware/controller.rb', line 209

def process!(path, request)
	passthrough(path, request)
end

#redirect!(target, status = 302) ⇒ Object 



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# File 'lib/utopia/middleware/controller.rb', line 162

def redirect! (target, status = 302)
	respond! :redirect => target, :status => status
end

#respond!(*args) ⇒ Object 



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# File 'lib/utopia/middleware/controller.rb', line 154

def respond! (*args)
	throw :response, args
end

#respond_with(*args) ⇒ Object 



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# File 'lib/utopia/middleware/controller.rb', line 170

def respond_with(*args)
	return args[0] if args[0] == nil || Array === args[0]

	status = 200
	options = nil

	if Numeric === args[0] || Symbol === args[0]
		status = args[0]
		options = args[1] || {}
	else
		options = args[0]
		status = options[:status] || status
	end

	status = Utopia::HTTP_STATUS_CODES[status] || status
	headers = options[:headers] || {}

	if options[:type]
		headers['Content-Type'] ||= options[:type]
	end

	if options[:redirect]
		headers["Location"] = options[:redirect]
		status = 302 if status < 300 || status >= 400
	end

	body = []
	if options[:body]
		body = options[:body]
	elsif options[:content]
		body = [options[:content]]
	elsif status >= 300
		body = [Utopia::HTTP_STATUS_DESCRIPTIONS[status] || 'Status #{status}']
	end

	# Utopia::LOG.debug([status, headers, body].inspect)
	return [status, headers, body]
end