63 lines
1.5 KiB
Ruby
63 lines
1.5 KiB
Ruby
module Locomotive
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module Liquid
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module LiquifyTemplate
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def self.included(base)
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base.extend(ClassMethods)
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end
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# Store the parsed version of a liquid template into a column in order to increase performance
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# See http://cjohansen.no/en/rails/liquid_email_templates_in_rails
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#
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# class Page
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# liquify_template :body
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# end
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#
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# page = Page.new :body => '...some liquid tags'
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# page.template # Liquid::Template
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#
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#
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module ClassMethods
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def liquify_template(source = :value)
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field :serialized_template, :type => Binary
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before_validation :store_template
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class_eval <<-EOV
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def liquify_template_source
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self.send(:#{source.to_s})
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end
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EOV
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include InstanceMethods
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end
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end
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module InstanceMethods
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def template
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@template ||= Marshal.load(read_attribute(:serialized_template).to_s) rescue nil
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end
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protected
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def store_template
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begin
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@template = ::Liquid::Template.parse(self.liquify_template_source)
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if self.respond_to?(:after_parse_template) # kind of callback
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self.send(:after_parse_template)
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end
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self.serialized_template = BSON::Binary.new(Marshal.dump(@template))
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rescue ::Liquid::SyntaxError => error
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self.errors.add :template, :liquid_syntax_error
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end
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end
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end
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end
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end
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end
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