42 lines
1.6 KiB
Ruby
42 lines
1.6 KiB
Ruby
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# frozen_string_literal: true
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# This file was simplified from https://raw.githubusercontent.com/rails/rails/195f39804a7a4a0034f25e8704220e03d95a752a/actionview/lib/action_view/context.rb.
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#
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# It is only needed by modules that need to call ActionView helper
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# methods (e.g. those in
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# https://github.com/rails/rails/tree/c4d3e202e10ae627b3b9c34498afb45450652421/actionview/lib/action_view/helpers)
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# to generate tags outside of a Rails controller (e.g. API, Sidekiq,
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# etc.).
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#
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# In Rails 5, ActionView::Context automatically includes CompiledTemplates.
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# This means that any module that includes ActionView::Context is now a descendant
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# of CompiledTemplates.
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#
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# When a partial is rendered for the first time, it runs
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# Module#module_eval, which will evaluate a string source that defines a
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# new method. For example:
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#
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# def _app_views_profiles_show_html_haml___1285955918103175884_70307801785400(local_assigns, output_buffer)
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# "hello world"
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# end
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#
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# When a new method is defined, the Ruby interpreter clears the method
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# cache for all descendants, and all methods for those modules will have
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# to be redefined. This can lead to a significant performance penalty.
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#
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# Rails 6 fixes this behavior by moving out the `include
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# CompiledTemplates` into ActionView::Base so that including `ActionView::Context`
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# doesn't quietly affect other modules in this way.
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if Rails::VERSION::STRING.start_with?('6')
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raise 'This module is no longer needed in Rails 6. Use ActionView::Context instead.'
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end
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module Gitlab
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module ActionViewOutput
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module Context
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attr_accessor :output_buffer, :view_flow
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end
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end
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end
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