Class: Babylon::Base::Controller

Inherits:
Object
  • Object
show all
Defined in:
lib/babylon/base/controller.rb

Overview

Your application’s controller should be descendant of this class.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(stanza = nil) ⇒ Controller

Creates a new controller (you should not override this class) and assigns the stanza as well as any other value of the hash to instances named after the keys of the hash.



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# File 'lib/babylon/base/controller.rb', line 12

def initialize(stanza = nil)
  @stanza = stanza
  @view = nil
  
  # used to render basic strings
  @content = nil
end

Instance Attribute Details

#action_name ⇒ Object

Stanza received by the controller (Nokogiri::XML::Node)



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# File 'lib/babylon/base/controller.rb', line 8

def action_name
  @action_name
end

#rendered ⇒ Object

Stanza received by the controller (Nokogiri::XML::Node)



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# File 'lib/babylon/base/controller.rb', line 8

def rendered
  @rendered
end

#stanza ⇒ Object

Stanza received by the controller (Nokogiri::XML::Node)



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# File 'lib/babylon/base/controller.rb', line 8

def stanza
  @stanza
end

Instance Method Details

#assigns ⇒ Object

Returns the list of variables assigned during the action.



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# File 'lib/babylon/base/controller.rb', line 36

def assigns
  vars = Hash.new
  instance_variables.each do |var|
    if !["@view", "@action_name", "@block"].include? var
      vars[var[1..-1]] = instance_variable_get(var)
    end
  end
  vars
end

#evaluate ⇒ Object

Actually evaluates the view



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# File 'lib/babylon/base/controller.rb', line 79

def evaluate
  return @view.evaluate if @view
  return @content
end

#perform(action) ⇒ Object

Performs the action and calls back the optional block argument : you should not override this function



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# File 'lib/babylon/base/controller.rb', line 22

def perform(action)
  @action_name = action
  begin
    self.send(@action_name)
  rescue
    Babylon.logger.error {
      "#{$!}:\n#{$!.backtrace.join("\n")}"
    }
  end
  self.render
end

#render(options = {}) ⇒ Object

Called by default after each action to “build” a XMPP stanza. By default, it will use the /controller_name/action.xml.builder You can use the following options :

- :file : render a specific file (can be in a different controller)
- :action : render another action of the current controller
- :nothing : doesn't render anything



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# File 'lib/babylon/base/controller.rb', line 52

def render(options = {}) 
  return if @view and !options[:force] # Avoid double rendering, if we have already attached a view
  
  if options == :nothing
    @view = Babylon::Base::View.new()
  elsif options.kind_of? String
    @content = options
  elsif options == {} # default rendering
    # Babylon.logger.debug("rendering default view #{default_template_name}")
    result = render(:file => default_template_name)
  elsif options[:file]
    file = options[:file]
    if file =~ /^\// # Render from view root
      result = render_for_file(File.join("app", "views", "#{file}.xml.builder"))
    else
      Babylon.logger.debug("rendering from here #{file} #{view_path(file)}")
      result = render_for_file(view_path(file)) 
    end
  elsif action_name = options[:action]
    result = render(:file => default_template_name(action_name.to_s))
  elsif options[:nothing]
    @view = Babylon::Base::View.new()
  end
end