Module: ActiveScaffold::ClassMethods

Defined in:
lib/active_scaffold.rb

Instance Method Summary collapse

Instance Method Details

#_add_sti_create_links ⇒ Object

To be called after include action modules



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# File 'lib/active_scaffold.rb', line 178

def _add_sti_create_links
  new_action_link = active_scaffold_config.action_links.collection['new']
  unless new_action_link.nil? || active_scaffold_config.sti_children.empty?
    active_scaffold_config.action_links.collection.delete('new')
    active_scaffold_config.sti_children.each do |child|
      new_sti_link = Marshal.load(Marshal.dump(new_action_link)) # deep clone
      new_sti_link.label = child.to_s.camelize.constantize.model_name.human
      new_sti_link.parameters = {:parent_sti => controller_path}
      new_sti_link.controller = Proc.new { active_scaffold_controller_for(child.to_s.camelize.constantize).controller_path }
      active_scaffold_config.action_links.collection.create.add(new_sti_link)
    end
  end
end

#active_scaffold(model_id = nil, &block) ⇒ Object 



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# File 'lib/active_scaffold.rb', line 115

def active_scaffold(model_id = nil, &block)
  # initialize bridges here
  ActiveScaffold::Bridges::Bridge.run_all

  # converts Foo::BarController to 'bar' and FooBarsController to 'foo_bar' and AddressController to 'address'
  model_id = self.to_s.split('::').last.sub(/Controller$/, '').pluralize.singularize.underscore unless model_id

  # run the configuration
  @active_scaffold_config = ActiveScaffold::Config::Core.new(model_id)
  @active_scaffold_config_block = block
  self.links_for_associations

  @active_scaffold_overrides = []
  ActionController::Base.view_paths.each do |dir|
    active_scaffold_overrides_dir = File.join(dir.to_s,"active_scaffold_overrides")
    @active_scaffold_overrides << active_scaffold_overrides_dir if File.exists?(active_scaffold_overrides_dir)
  end
  @active_scaffold_overrides.uniq! # Fix rails duplicating some view_paths
  @active_scaffold_frontends = []
  if active_scaffold_config.frontend.to_sym != :default
    active_scaffold_custom_frontend_path = File.join(ActiveScaffold::Config::Core.plugin_directory, 'frontends', active_scaffold_config.frontend.to_s , 'views')
    @active_scaffold_frontends << active_scaffold_custom_frontend_path
  end
  active_scaffold_default_frontend_path = File.join(ActiveScaffold::Config::Core.plugin_directory, 'frontends', 'default' , 'views')
  @active_scaffold_frontends << active_scaffold_default_frontend_path
  @active_scaffold_custom_paths = []

  self.active_scaffold_superclasses_blocks.each {|superblock| self.active_scaffold_config.configure &superblock}
  self.active_scaffold_config.sti_children = nil # reset sti_children if set in parent block
  self.active_scaffold_config.configure &block if block_given?
  self.active_scaffold_config._configure_sti unless self.active_scaffold_config.sti_children.nil?
  self.active_scaffold_config._load_action_columns

  # defines the attribute read methods on the model, so record.send() doesn't find protected/private methods instead
  klass = self.active_scaffold_config.model
  klass.define_attribute_methods unless klass.attribute_methods_generated?
  # include the rest of the code into the controller: the action core and the included actions
  module_eval do
    include ActiveScaffold::Finder
    include ActiveScaffold::Constraints
    include ActiveScaffold::AttributeParams
    include ActiveScaffold::Actions::Core
    active_scaffold_config.actions.each do |mod|
      name = mod.to_s.camelize
      include "ActiveScaffold::Actions::#{name}".constantize

      # sneak the action links from the actions into the main set
      if link = active_scaffold_config.send(mod).link rescue nil
        if link.is_a? Array
          link.each {|current| active_scaffold_config.action_links.add_to_group(current, active_scaffold_config.send(mod).action_group)}
        elsif link.is_a? ActiveScaffold::DataStructures::ActionLink
          active_scaffold_config.action_links.add_to_group(link, active_scaffold_config.send(mod).action_group)
        end
      end
    end
  end
  active_scaffold_paths.each do |path|
    self.append_view_path(ActionView::ActiveScaffoldResolver.new(path))
  end
  self._add_sti_create_links if self.active_scaffold_config.add_sti_create_links?
end

#active_scaffold_config ⇒ Object 



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# File 'lib/active_scaffold.rb', line 264

def active_scaffold_config
  if @active_scaffold_config.nil?
    self.superclass.active_scaffold_config if self.superclass.respond_to? :active_scaffold_config
  else
    @active_scaffold_config
  end
end

#active_scaffold_config_block ⇒ Object 



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# File 'lib/active_scaffold.rb', line 272

def active_scaffold_config_block
  @active_scaffold_config_block
end

#active_scaffold_config_for(klass) ⇒ Object 



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# File 'lib/active_scaffold.rb', line 286

def active_scaffold_config_for(klass)
  begin
    controller = active_scaffold_controller_for(klass)
  rescue ActiveScaffold::ControllerNotFound
    config = ActiveScaffold::Config::Core.new(klass)
    config._load_action_columns
    config
  else
    controller.active_scaffold_config
  end
end

#active_scaffold_controller_for(klass) ⇒ Object

Tries to find a controller for the given ActiveRecord model. Searches in the namespace of the current controller for singular and plural versions of the conventional “#modelController” syntax. You may override this method to customize the search routine.

Raises:



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# File 'lib/active_scaffold.rb', line 301

def active_scaffold_controller_for(klass)
  controller_namespace = self.to_s.split('::')[0...-1].join('::') + '::'
  error_message = []
  [controller_namespace, ''].each do |namespace|
    ["#{klass.to_s.underscore.pluralize}", "#{klass.to_s.underscore.pluralize.singularize}"].each do |controller_name|
      begin
        controller = "#{namespace}#{controller_name.camelize}Controller".constantize
      rescue NameError => error
        # Only rescue NameError associated with the controller constant not existing - not other compile errors
        if error.message["uninitialized constant #{controller}"]
          error_message << "#{namespace}#{controller_name.camelize}Controller"
          next
        else
          raise
        end
      end
      raise ActiveScaffold::ControllerNotFound, "#{controller} missing ActiveScaffold", caller unless controller.uses_active_scaffold?
      raise ActiveScaffold::ControllerNotFound, "ActiveScaffold on #{controller} is not for #{klass} model.", caller unless controller.active_scaffold_config.model == klass
      return controller
    end
  end
  raise ActiveScaffold::ControllerNotFound, "Could not find " + error_message.join(" or "), caller
end

#active_scaffold_paths ⇒ Object 



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# File 'lib/active_scaffold.rb', line 253

def active_scaffold_paths
  return @active_scaffold_paths unless @active_scaffold_paths.nil?

  #@active_scaffold_paths = ActionView::PathSet.new
  @active_scaffold_paths = []
  @active_scaffold_paths.concat @active_scaffold_overrides unless @active_scaffold_overrides.nil?
  @active_scaffold_paths.concat @active_scaffold_custom_paths unless @active_scaffold_custom_paths.nil?
  @active_scaffold_paths.concat @active_scaffold_frontends unless @active_scaffold_frontends.nil?
  @active_scaffold_paths
end

#active_scaffold_superclasses_blocks ⇒ Object 



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# File 'lib/active_scaffold.rb', line 276

def active_scaffold_superclasses_blocks
  blocks = []
  klass = self.superclass
  while klass.respond_to? :active_scaffold_superclasses_blocks
    blocks << klass.active_scaffold_config_block
    klass = klass.superclass
  end
  blocks.compact.reverse
end

#add_active_scaffold_override_path(path) ⇒ Object 



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# File 'lib/active_scaffold.rb', line 248

def add_active_scaffold_override_path(path)
  @active_scaffold_paths = nil # Force active_scaffold_paths to rebuild
  @active_scaffold_overrides.unshift path
end

#add_active_scaffold_path(path) ⇒ Object 



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# File 'lib/active_scaffold.rb', line 243

def add_active_scaffold_path(path)
  @active_scaffold_paths = nil # Force active_scaffold_paths to rebuild
  @active_scaffold_custom_paths << path
end

#link_for_association(column, options = {}) ⇒ Object 



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# File 'lib/active_scaffold.rb', line 204

def link_for_association(column, options = {})
  begin
    controller = if column.polymorphic_association?
      :polymorph
    elsif options.include?(:controller)
      "#{options[:controller].to_s.camelize}Controller".constantize
    else
      active_scaffold_controller_for(column.association.klass)
    end
  rescue ActiveScaffold::ControllerNotFound
    controller = nil        
  end
  
  unless controller.nil?
    options.reverse_merge! :label => column.label, :position => :after, :type => :member, :controller => (controller == :polymorph ? controller : controller.controller_path), :column => column
    options[:parameters] ||= {}
    options[:parameters].reverse_merge! :parent_scaffold => controller_path, :association => column.association.name
    if column.plural_association?
      # note: we can't create nested scaffolds on :through associations because there's no reverse association.
      
      ActiveScaffold::DataStructures::ActionLink.new('index', options) #unless column.through_association?
    else
      actions = [:create, :update, :show] 
      actions = controller.active_scaffold_config.actions unless controller == :polymorph
      column.actions_for_association_links.delete :new unless actions.include? :create
      column.actions_for_association_links.delete :edit unless actions.include? :update
      column.actions_for_association_links.delete :show unless actions.include? :show
      ActiveScaffold::DataStructures::ActionLink.new(:none, options.merge({:crud_type => nil, :html_options => {:class => column.name}}))
    end 
  end
end

#link_for_association_as_scope(scope, options = {}) ⇒ Object 



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# File 'lib/active_scaffold.rb', line 236

def link_for_association_as_scope(scope, options = {})
  options.reverse_merge! :label => scope, :position => :after, :type => :member, :controller => controller_path
  options[:parameters] ||= {}
  options[:parameters].reverse_merge! :parent_scaffold => controller_path, :named_scope => scope
  ActiveScaffold::DataStructures::ActionLink.new('index', options)
end

#links_for_associations ⇒ Object

Create the automatic column links. Note that this has to happen when configuration is done, because otherwise the Nested module could be disabled. Actually, it could still be disabled later, couldn’t it?



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# File 'lib/active_scaffold.rb', line 193

def links_for_associations
  return unless active_scaffold_config.actions.include? :list and active_scaffold_config.actions.include? :nested
  active_scaffold_config.columns.each do |column|
    next unless column.link.nil? and column.autolink?
    #lazy load of action_link, cause it was really slowing down app in dev mode
    #and might lead to trouble cause of cyclic constantization of controllers
    #and might be unnecessary cause it is done before columns are configured
    column.set_link(Proc.new {|col| link_for_association(col)})
  end
end

#uses_active_scaffold? ⇒ Boolean

Returns:



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# File 'lib/active_scaffold.rb', line 325

def uses_active_scaffold?
  !active_scaffold_config.nil?
end