87 lines
2.9 KiB
Ruby
87 lines
2.9 KiB
Ruby
# Code is heavily inspired by panaromic gem
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# https://github.com/andreapavoni/panoramic
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# We will try to find layouts and content from database
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# layout will be rendered with erb and other content in html format
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# Further processing in liquid is implemented in mailers
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# Note: rails resolver looks for templates in cache first
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# which we don't want to happen here
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# so we are overriding find_all method in action view resolver
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# If anything breaks - look into rails : actionview/lib/action_view/template/resolver.rb
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class ::EmailTemplates::DbResolverService < ActionView::Resolver
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require 'singleton'
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include Singleton
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# Instantiate Resolver by passing a model.
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def self.using(model, options = {})
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class_variable_set(:@@model, model)
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class_variable_set(:@@resolver_options, options)
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instance
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end
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# Since rails picks up files from cache. lets override the method
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# Normalizes the arguments and passes it on to find_templates.
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# rubocop:disable Metrics/ParameterLists
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def find_all(name, prefix = nil, partial = false, details = {}, key = nil, locals = [])
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locals = locals.map(&:to_s).sort!.freeze
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_find_all(name, prefix, partial, details, key, locals)
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end
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# rubocop:enable Metrics/ParameterLists
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# the function has to accept(name, prefix, partial, _details, _locals = [])
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# _details contain local info which we can leverage in future
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# cause of codeclimate issue with 4 args, relying on (*args)
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def find_templates(name, prefix, partial, *_args)
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@template_name = name
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@template_type = prefix.include?('layout') ? 'layout' : 'content'
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@db_template = find_db_template
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return [] if @db_template.blank?
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path = build_path(prefix)
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handler = ActionView::Template.registered_template_handler(:liquid)
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template_details = {
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format: Mime['html'].to_sym,
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updated_at: @db_template.updated_at,
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virtual_path: virtual_path(path, partial)
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}
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[ActionView::Template.new(@db_template.body, "DB Template - #{@db_template.id}", handler, template_details)]
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end
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private
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def find_db_template
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find_account_template || find_installation_template
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end
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def find_account_template
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return unless Current.account
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@@model.find_by(name: @template_name, template_type: @template_type, account: Current.account)
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end
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def find_installation_template
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@@model.find_by(name: @template_name, template_type: @template_type, account: nil)
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end
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# Build path with eventual prefix
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def build_path(prefix)
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prefix.present? ? "#{prefix}/#{@template_name}" : @template_name
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end
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# returns a path depending if its a partial or template
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# params path: path/to/file.ext partial: true/false
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# the function appends _to make the file name _file.ext if partial: true
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def virtual_path(path, partial)
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return path unless partial
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if (index = path.rindex('/'))
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path.insert(index + 1, '_')
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else
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"_#{path}"
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end
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end
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end
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