Module: ExpressTemplates::Components::Capabilities::Conditionality

Defined in:

lib/express_templates/components/capabilities/conditionality.rb

Overview

Adds the capability for a component to only render its markup when a condition to be evaluated in the view is true.

Example:

class PageHeader < ExpressTemplates::Components::Base
  include ExpressTemplates::Components::Capabilities::Conditionality

    emits {
      h1 { content_for(:page_header) }
    }

    only_if -> { content_for?(:page_header) }

  end
end

The condition supplied to only if in the form of a proc is evaluated in the view context.

The component will render an empty string if the proc returns false.

Defined Under Namespace

Modules: ClassMethods

Class Method Summary

• .included(base) ⇒ Object

Class Method Details

.included(base) ⇒ Object

# File 'lib/express_templates/components/capabilities/conditionality.rb', line 27

def self.included(base)
  base.class_eval do
    extend ClassMethods
  end
end