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



39
40
41
42
43
44
45
46
47
48
49
 
# 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



22
23
24
25
 
# 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 



27
28
29
 
# File 'lib/active_admin/arbre/builder.rb', line 27

def helpers
  @_helpers
end