Class: MenuBuilder::ViewHelpers::Menu

Inherits:
Object
  • Object
show all
Defined in:
lib/menu_builder/helper.rb

Instance Method Summary collapse

Constructor Details

#initialize(context, &block) ⇒ Menu 



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# File 'lib/menu_builder/helper.rb', line 26

def initialize(context, &block)
  @context      = context
  @menu_items   = context.instance_variable_get('@menu_items')
  @actual_items = []
  @block        = block
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(item, *args, &block) ⇒ Object 



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# File 'lib/menu_builder/helper.rb', line 33

def method_missing item, *args, &block
  @actual_items << MenuItem.new(item, args, block)
  nil
end

Instance Method Details

#first?(item) ⇒ Boolean 



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# File 'lib/menu_builder/helper.rb', line 66

def first? item
  @actual_items.first == item
end

#html_options_for(item) ⇒ Object 



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# File 'lib/menu_builder/helper.rb', line 47

def html_options_for item
  css_classes = []
  css_classes << "current" if included_in_current_items? item
  css_classes << "first"   if first? item
  css_classes << "last"    if last? item

  options = {}
  options[:class] = css_classes.join(" ") if css_classes.any?
  options
end

#included_in_current_items?(item) ⇒ Boolean 



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# File 'lib/menu_builder/helper.rb', line 58

def included_in_current_items?(item)
  @menu_items.present? && @menu_items.include?(item.to_sym)
end

#last?(item) ⇒ Boolean 



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# File 'lib/menu_builder/helper.rb', line 62

def last? item
  @actual_items.last == item
end

#render ⇒ Object 



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# File 'lib/menu_builder/helper.rb', line 38

def render
  @block.call(self)
  @actual_items.map { |item| render_one item }.join.html_safe
end

#render_one(item) ⇒ Object 



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# File 'lib/menu_builder/helper.rb', line 43

def render_one item
  @context.content_tag :li, item.link_to_in_context(@context), html_options_for(item)
end