Class: RackDispatch::Application

Inherits:
Object
  • Object
show all
Defined in:
lib/rack_dispatch/application.rb

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.as(role) ⇒ Object 



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# File 'lib/rack_dispatch/application.rb', line 3

def self.as(role)
  _previous_role = @role ; @role = role ; yield ; @role = _previous_role
end

.route(method, path, with: {}, thereupon: nil, redirect: nil, template: nil) ⇒ Object 



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# File 'lib/rack_dispatch/application.rb', line 7

def self.route(method, path, with: {}, thereupon: nil, redirect: nil, template: nil)
  builders = []
  handlers = {}

  pattern_scan = path.scan(/(\:([a-z_]+))/).flatten.map do |value|
  if value.match(':')
    value
  else
    builder_class = Object.const_get("#{value}_builder".split('_').map(&:capitalize).join)
    builders << builder_class.new
    builder_class.regexp
  end
  end

  pattern_keys = pattern_scan.select.with_index { |_, i| i.even? }
  pattern = /\A#{path.gsub(Regexp.union(pattern_keys), Hash[*pattern_scan])}\z/

  with.each do |handler_name, condition|
  handler = Object.const_get("#{handler_name}_handler".split('_').map(&:capitalize).join).new
  handlers[handler] = condition
  end

  tasks = Array(thereupon).map do |task_name|
  Object.const_get("#{task_name}_task".split('_').map(&:capitalize).join).new
  end

  destination = template ? TemplateDestination.new(template) : RedirectDestination.new(redirect)

  ((@routes ||= {})[method.to_s.downcase] ||= []) << [pattern, builders, handlers, tasks, destination]
end

Instance Method Details

#call(env) ⇒ Object 



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# File 'lib/rack_dispatch/application.rb', line 38

def call(env)
  request = Rack::Request.new(env)
  response = Rack::Response.new
  computed_handlers = {}

  routes = self.class.instance_variable_get(:@routes)[request.request_method.downcase].select do |pattern, builders, handlers, tasks, destination|
  pattern.match(request.path) do |matches|
    # user matching

    builders.zip(matches[1..-1]).all? do |builder, value|
 builder_name = builder.class.name.sub(/Builder\z/, '').gsub(/(.)([A-Z])/,'\1_\2').downcase

 if request.params[builder_name]
   true
 elsif result = builder.call(value)
   request.update_param(builder_name, result) ; true
 end
    end
  end
  end

  route = routes.find do |pattern, builders, handlers, tasks, destination|
  handlers.all? do |handler, condition|
    (computed_handlers.key?(handler) && computed_handlers[handler] == condition) ||
 ((computed_handlers[handler] = handler.call(request)) == condition)
  end
  end

  if route
  route[3].each do |task|
    task.call(response)
  end

  route.last.call(request, response)
  else
  response.status = 404
  response.write 'Not Found'
  end

  response.finish
end