67 lines
2.3 KiB
Ruby
67 lines
2.3 KiB
Ruby
# frozen_string_literal: true
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module ActionView # :nodoc:
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# = Action View Template Handlers
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class Template # :nodoc:
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module Handlers # :nodoc:
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autoload :Raw, "action_view/template/handlers/raw"
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autoload :ERB, "action_view/template/handlers/erb"
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autoload :Html, "action_view/template/handlers/html"
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autoload :Builder, "action_view/template/handlers/builder"
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def self.extended(base)
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base.register_default_template_handler :raw, Raw.new
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base.register_template_handler :erb, ERB.new
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base.register_template_handler :html, Html.new
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base.register_template_handler :builder, Builder.new
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base.register_template_handler :ruby, lambda { |_, source| source }
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end
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@@template_handlers = {}
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@@default_template_handlers = nil
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def self.extensions
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@@template_extensions ||= @@template_handlers.keys
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end
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# Register an object that knows how to handle template files with the given
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# extensions. This can be used to implement new template types.
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# The handler must respond to +:call+, which will be passed the template
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# and should return the rendered template as a String.
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def register_template_handler(*extensions, handler)
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raise(ArgumentError, "Extension is required") if extensions.empty?
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extensions.each do |extension|
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@@template_handlers[extension.to_sym] = handler
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end
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@@template_extensions = nil
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end
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# Opposite to register_template_handler.
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def unregister_template_handler(*extensions)
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extensions.each do |extension|
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handler = @@template_handlers.delete extension.to_sym
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@@default_template_handlers = nil if @@default_template_handlers == handler
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end
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@@template_extensions = nil
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end
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def template_handler_extensions
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@@template_handlers.keys.map(&:to_s).sort
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end
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def registered_template_handler(extension)
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extension && @@template_handlers[extension.to_sym]
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end
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def register_default_template_handler(extension, klass)
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register_template_handler(extension, klass)
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@@default_template_handlers = klass
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end
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def handler_for_extension(extension)
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registered_template_handler(extension) || @@default_template_handlers
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end
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end
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end
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end
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