Module: Arbre::Builder

Included in:
ActiveAdmin::Renderer, HTML::Element
Defined in:
lib/active_admin/arbre/builder.rb

Overview

Include this module in any context to start building html.

assigns = {}
include Arbre::Builder
span("foo").to_s #=> "<span>foo</span>

When you include the module, you are required to setup 2 variables:

  • assigns: This is a hash that includes local variables
  • helpers: This is an object that provides helper methods to all objects within the context.

Defined Under Namespace

Modules: BuilderMethods

Instance Method Summary collapse

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

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

Implements the method lookup chain. When you call a method that doesn't exist, we:

  1. Try to call the method on the current DOM context
  2. Return an assigned variable of the same name
  3. Call the method on the helper object
  4. Call super


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# File 'lib/active_admin/arbre/builder.rb', line 39

def method_missing(name, *args, &block)
  if current_dom_context.respond_to?(name)
    current_dom_context.send name, *args, &block
  elsif assigns && assigns.has_key?(name)
    assigns[name]
  elsif helpers.respond_to?(name)
    helpers.send(name, *args, &block)
  else
    super
  end
end

Instance Method Details

#current_dom_context ⇒ Arbre::Element

Retrieve the current DOM context.

If no @__current_dom_element__ has been set, this method will setup the initial context.

Returns:

  • (Arbre::Element) —

    the current element that is in context



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# File 'lib/active_admin/arbre/builder.rb', line 22

def current_dom_context
  @__current_dom_element__ ||= Arbre::Context.new(assigns, helpers)
  @__current_dom_element__.current_dom_context
end

#helpers ⇒ Object 



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# File 'lib/active_admin/arbre/builder.rb', line 27

def helpers
  @_helpers
end