Module: RenderWithMissingTemplate::ActionView::InstanceMethods

Defined in:
lib/render_with_missing_template/action_view.rb

Constant Summary collapse

RENDER_KEYS = 
[:partial, :text, :template, :file, :inline]

Instance Method Summary collapse

Instance Method Details

#render_with_defaults(options = {}, locals = {}, &block) ⇒ Object 



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# File 'lib/render_with_missing_template/action_view.rb', line 12

def render_with_defaults(options = {}, locals = {}, &block)
  if options.is_a?(Hash)
    defaults = options.delete(:if_missing)
    nested = options.delete(:nested)          
  elsif locals.is_a?(Hash)
    defaults = locals.delete(:if_missing)
    nested = locals.delete(:nested)          
  end

  # Prevents replacing :if_missing => false with empty hash.
  unless defaults.nil?
    begin
      render_without_defaults(options, locals, &block)
    rescue ::ActionView::MissingTemplate
      unless defaults == false
        defaults ||= {}
        new_options = defaults
        if options.is_a?(Hash)
          new_options = defaults.reverse_merge(options)
          
          # If user does something like
          #  render :partial => "test", :locals => {:temp => 1}, :if_missing => {:template => "missing"}
          # We should replace :partial => "test" with :template => "missing" and keep :locals.

          # Determine that render options have two template reference keys.
          render_keys = RENDER_KEYS.map { |k| k if new_options.include?(k) }.compact                
          if render_keys.size > 1
            # And delete unneccessary keys from default options.
            new_options = new_options.delete_if { |k, v| render_keys.include?(k) && options.include?(k) }
          end
        end
        render_without_defaults(new_options, locals, &block)
      end
    end
  else
    begin
      render_without_defaults(options, locals, &block)        
    rescue ::ActionView::MissingTemplate => e            
      if nested
        raise MissingTemplateContainer.new(e)
      else
        raise e
      end
    end
  end
end