113 lines
3.8 KiB
Ruby
113 lines
3.8 KiB
Ruby
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module Locomotive
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module Extensions
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module Page
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module Parse
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extend ActiveSupport::Concern
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included do
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field :serialized_template, :type => Binary
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field :template_dependencies, :type => Array, :default => []
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field :snippet_dependencies, :type => Array, :default => []
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attr_reader :template_changed
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before_validation :serialize_template
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after_save :update_template_descendants
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validate :template_must_be_valid
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scope :pages, lambda { |domain| { :any_in => { :domains => [*domain] } } }
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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 serialize_template
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if self.new_record? || self.raw_template_changed?
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@template_changed = true
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@parsing_errors = []
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begin
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self._parse_and_serialize_template
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rescue ::Liquid::SyntaxError => error
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@parsing_errors << I18n.t(:liquid_syntax, :fullpath => self.fullpath, :error => error.to_s, :scope => [:errors, :messages, :page])
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rescue ::Locomotive::Liquid::PageNotFound => error
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@parsing_errors << I18n.t(:liquid_extend, :fullpath => self.fullpath, :scope => [:errors, :messages, :page])
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end
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end
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end
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def _parse_and_serialize_template(context = {})
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self.parse(context)
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self._serialize_template
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end
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def _serialize_template
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self.serialized_template = BSON::Binary.new(Marshal.dump(@template))
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end
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def parse(context = {})
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self.disable_all_editable_elements
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default_context = { :site => self.site, :page => self, :templates => [], :snippets => [] }
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context = default_context.merge(context)
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@template = ::Liquid::Template.parse(self.raw_template, context)
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self.template_dependencies = context[:templates]
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self.snippet_dependencies = context[:snippets]
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@template.root.context.clear
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end
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def template_must_be_valid
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@parsing_errors.try(:each) { |msg| self.errors.add :template, msg }
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end
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def update_template_descendants
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return unless @template_changed == true
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# we admit at this point that the current template is up-to-date
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template_descendants = self.site.pages.any_in(:template_dependencies => [self.id]).to_a
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# group them by fullpath for better performance
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cached = template_descendants.inject({}) { |memo, page| memo[page.fullpath] = page; memo }
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self._update_direct_template_descendants(template_descendants.clone, cached)
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# finally save them all
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::Page.without_callback(:save, :after, :update_template_descendants) do
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template_descendants.each do |page|
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page.save(:validate => false)
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end
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end
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end
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def _update_direct_template_descendants(template_descendants, cached)
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direct_descendants = template_descendants.select do |page|
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((self.template_dependencies || []) + [self._id]) == (page.template_dependencies || [])
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end
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direct_descendants.each do |page|
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page.send(:_parse_and_serialize_template, { :cached_parent => self, :cached_pages => cached })
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template_descendants.delete(page) # no need to loop over it next time
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page.send(:_update_direct_template_descendants, template_descendants, cached) # move down
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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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end
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