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dsl.rb
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dsl.rb
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require 'lotus/view/rendering/template_name'
require 'lotus/view/rendering/layout_finder'
module Lotus
module View
# Class level DSL
#
# @since 0.1.0
module Dsl
# When a value is given, specify a templates root path for the view.
# Otherwise, it returns templates root path.
#
# When not initialized, it will return the global value from `Lotus::View.root`.
#
# @param value [String] the templates root for this view
#
# @return [Pathname] the specified root for this view or the global value
#
# @since 0.1.0
#
# @example Default usage
# require 'lotus/view'
#
# module Articles
# class Show
# include Lotus::View
# end
# end
#
# Lotus::View.configuration.root # => 'app/templates'
# Articles::Show.root # => 'app/templates'
#
# @example Custom root
# require 'lotus/view'
#
# module Articles
# class Show
# include Lotus::View
# root 'path/to/articles/templates'
# end
# end
#
# Lotus::View.configuration.root # => 'app/templates'
# Articles::Show.root # => 'path/to/articles/templates'
def root(value = nil)
if value
configuration.root(value)
else
configuration.root
end
end
# When a value is given, specify the handled format.
# Otherwise, it returns the previously specified format.
#
# @param value [Symbol] the format
#
# @return [Symbol, nil] the specified format for this view, if set
#
# @since 0.1.0
#
# @example
# require 'lotus/view'
#
# module Articles
# class Show
# include Lotus::View
# end
#
# class JsonShow < Show
# format :json
# end
# end
#
# Articles::Show.format # => nil
# Articles::JsonShow.format # => :json
def format(value = nil)
if value
@format = value
else
@format
end
end
# When a value is given, specify the relative path to the template.
# Otherwise, it returns the name that follows Lotus::View conventions.
#
# @param value [String] relative template path
#
# @return [String] the specified template for this view or the name
# that follows the convention
#
# @since 0.1.0
#
# @example Default usage
# require 'lotus/view'
#
# module Articles
# class Show
# include Lotus::View
# end
#
# class JsonShow < Show
# format :json
# end
# end
#
# Articles::Show.template # => 'articles/show'
# Articles::JsonShow.template # => 'articles/show'
#
# @example Custom template
# require 'lotus/view'
#
# module Articles
# class Show
# include Lotus::View
# template 'articles/single_article'
# end
#
# class JsonShow < Show
# format :json
# end
# end
#
# Articles::Show.template # => 'articles/single_article'
# Articles::JsonShow.template # => 'articles/single_article'
#
# @example With namespace
# require 'lotus/view'
#
# module Furnitures
# View = Lotus::View.generate(self)
#
# class Standalone
# include Furnitures::View
# end
#
# module Catalog
# class Index
# Furnitures::View
# end
# end
# end
#
# Furnitures::Standalone.template # => 'standalone'
# Furnitures::Catalog::Index.template # => 'catalog/index'
#
# @example With nested namespace
# require 'lotus/view'
#
# module Frontend
# View = Lotus::View.generate(self)
#
# class StandaloneView
# include Frontend::View
# end
#
# module Views
# class Standalone
# include Frontend::View
# end
#
# module Sessions
# class New
# include Frontend::View
# end
# end
# end
# end
#
# Frontend::StandaloneView.template # => 'standalone_view'
# Frontend::Views::Standalone.template # => 'standalone'
# Frontend::Views::Sessions::New.template # => 'sessions/new'
#
# @example With deeply nested namespace
# require 'lotus/view'
#
# module Bookshelf
# module Web
# View = Lotus::View.generate(self)
#
# module Views
# module Books
# class Show
# include Bookshelf::Web::View
# end
# end
# end
# end
#
# module Api
# View = Lotus::View.generate(self)
#
# module Views
# module Books
# class Show
# include Bookshelf::Api::View
# end
# end
# end
# end
# end
#
# Bookshelf::Web::Views::Books::Index.template # => 'books/index'
# Bookshelf::Api::Views::Books::Index.template # => 'books/index'
def template(value = nil)
if value
@@template = value
else
@@template ||= Rendering::TemplateName.new(name, configuration.namespace).to_s
end
end
# When a value is given, it specifies the layout.
# Otherwise, it returns the previously specified layout.
#
# When the global configuration is set (`Lotus::View.layout=`), after the
# loading process, it will return that layout if not otherwise specified.
#
# @param value [Symbol,nil] the layout name
#
# @return [Symbol, nil] the specified layout for this view, if set
#
# @since 0.1.0
#
# @see Lotus::Layout
#
# @example Default usage
# require 'lotus/view'
#
# module Articles
# class Show
# include Lotus::View
# end
# end
#
# Articles::Show.layout # => nil
#
# @example Custom layout
# require 'lotus/view'
#
# class ArticlesLayout
# include Lotus::Layout
# end
#
# module Articles
# class Show
# include Lotus::View
# layout :articles
# end
# end
#
# Articles::Show.layout # => :articles
#
# @example Global configuration
# require 'lotus/view'
#
# class ApplicationLayout
# include Lotus::Layout
# end
#
# module Articles
# class Show
# include Lotus::View
# end
# end
#
# Lotus::View.layout = :application
# Articles::Show.layout # => nil
#
# Lotus::View.load!
# Articles::Show.layout # => :application
#
# @example Global configuration with custom layout
# require 'lotus/view'
#
# class ApplicationLayout
# include Lotus::Layout
# end
#
# class ArticlesLayout
# include Lotus::Layout
# end
#
# module Articles
# class Show
# include Lotus::View
# layout :articles
# end
# end
#
# Lotus::View.layout = :application
# Articles::Show.layout # => :articles
#
# Lotus::View.load!
# Articles::Show.layout # => :articles
def layout(value = nil)
if value
@layout = value
else
@layout ||= configuration.layout
end
end
protected
# Loading mechanism hook.
#
# @api private
# @since 0.1.0
#
# @see Lotus::View.load!
def load!
super
views.each do |v|
v.root.freeze
v.format.freeze
v.template.freeze
v.layout(Rendering::LayoutFinder.new(v).find)
v.layout.freeze
end
end
end
end
end