Class: ShortStack::Controller

Inherits:
Object
  • Object
show all
Extended by:
Pancake::Mixins::Publish
Includes:
Pancake::Mixins::Render, Pancake::Mixins::RequestHelper, Pancake::Mixins::ResponseHelper, Pancake::Mixins::StackHelper
Defined in:
lib/short_stack/controller.rb

Constant Summary collapse

DEFAULT_EXCEPTION_HANDLER = 
lambda do |error|
  if layout = env['layout']
    layout.content = render :error, :error => error
    layout
  else
    render :error, :error => error
  end
end

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(env) ⇒ Controller

Returns a new instance of Controller.



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# File 'lib/short_stack/controller.rb', line 64

def initialize(env)
  @env, @request = env, Rack::Request.new(env)
  @status = 200
end

Instance Attribute Details

#action ⇒ Object 



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# File 'lib/short_stack/controller.rb', line 76

def action
  @action ||=  begin
    rr = request.env['router.response']
    action = rr && rr.dest && rr.dest[:action]
  end
end

#status ⇒ Object 



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# File 'lib/short_stack/controller.rb', line 62

def status
  @status
end

Class Method Details

._template_name_for(name, opts) ⇒ Object 



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# File 'lib/short_stack/controller.rb', line 172

def self._template_name_for(name, opts)
  opts[:format] ||= :html
  [
    "#{name}.#{opts[:format]}",
    "#{name}"
  ]
end

.call(env) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/short_stack/controller.rb', line 52

def self.call(env)
  app = new(env)
  app.dispatch!
end

.handle_exception(&block) ⇒ Object 



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# File 'lib/short_stack/controller.rb', line 147

def self.handle_exception(&block)
  if block_given?
    self._handle_exception = block
  else
    self._handle_exception || DEFAULT_EXCEPTION_HANDLER
  end
end

.roots ⇒ Object 



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# File 'lib/short_stack/controller.rb', line 168

def self.roots
  stack_class.roots
end

Instance Method Details

#_tempate_name_for(name, opts = {}) ⇒ Object 



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# File 'lib/short_stack/controller.rb', line 180

def _tempate_name_for(name, opts = {})
  opts[:format] ||= content_type
  self.class._template_name_for(name, opts)
end

#dispatch! ⇒ Object

Dispatches to an action based on the params parameter



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# File 'lib/short_stack/controller.rb', line 84

def dispatch!
  if logger
    logger.info "Request: #{request.path}"
    logger.info "Params: #{params.inspect}"
  end


  # Check that the action is available
  raise Pancake::Errors::NotFound, "No Action Found" unless allowed_action?(action)

  @action_opts  = actions[action]

  negotiate_content_type!(@action_opts.formats, params)

  # Set the layout defaults before the action is rendered
  if layout && stack_class.default_layout
    layout.template_name = stack_class.default_layout
  end

  layout.format = params['format'] if layout

  logger.info "Dispatching to #{action.inspect}" if logger

  result = catch(:halt){ self.send(action) }

  case result
  when Array
    result
  when Rack::Response
    result.finish
  when String
    out = if layout
      layout.content = result
      layout
    else
      result
    end
    Rack::Response.new(out, status, headers).finish
  else
    Rack::Response.new((result || ""), status, headers).finish
  end

rescue Pancake::Errors::HttpError => e
  if logger && log_http_error?(e)
    logger.error "Exception: #{e.message}"
    logger.error e.backtrace.join("\n")
  end
  handle_request_exception(e)
rescue Exception => e
  if Pancake.handle_errors?
    server_error = Pancake::Errors::Server.new(e.message)
    server_error.exceptions << e
    server_error.set_backtrace e.backtrace
  else
    server_error = e
  end
  handle_request_exception(server_error)
end

#handle_request_exception(error) ⇒ Object

Raises:

  • (error.class) 


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# File 'lib/short_stack/controller.rb', line 155

def handle_request_exception(error)
  raise(error.class, error.message, error.backtrace) unless Pancake.handle_errors?
  self.status = error.code
  result = instance_exec error, &self.class.handle_exception
  Rack::Response.new(result, status, headers).finish
end

#layout ⇒ Object 



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# File 'lib/short_stack/controller.rb', line 57

def layout
  env['layout']
end

#log_http_error?(error) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/short_stack/controller.rb', line 143

def log_http_error?(error)
  true
end

#params ⇒ Object

Provides access to the request params



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# File 'lib/short_stack/controller.rb', line 71

def params
  request.params
end