71 lines
1.9 KiB
Ruby
71 lines
1.9 KiB
Ruby
# Store object full path in separate table for easy lookup and uniq validation
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# Object must have path db field and respond to full_path and full_path_changed? methods.
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module Routable
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extend ActiveSupport::Concern
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included do
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has_one :route, as: :source, autosave: true, dependent: :destroy
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validates_associated :route
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validates :route, presence: true
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before_validation :update_route_path, if: :full_path_changed?
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end
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class_methods do
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# Finds a single object by full path match in routes table.
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#
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# Usage:
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#
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# Klass.find_by_full_path('gitlab-org/gitlab-ce')
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#
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# Returns a single object, or nil.
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def find_by_full_path(path)
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# On MySQL we want to ensure the ORDER BY uses a case-sensitive match so
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# any literal matches come first, for this we have to use "BINARY".
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# Without this there's still no guarantee in what order MySQL will return
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# rows.
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binary = Gitlab::Database.mysql? ? 'BINARY' : ''
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order_sql = "(CASE WHEN #{binary} routes.path = #{connection.quote(path)} THEN 0 ELSE 1 END)"
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where_full_path_in([path]).reorder(order_sql).take
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end
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# Builds a relation to find multiple objects by their full paths.
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#
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# Usage:
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#
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# Klass.where_full_path_in(%w{gitlab-org/gitlab-ce gitlab-org/gitlab-ee})
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#
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# Returns an ActiveRecord::Relation.
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def where_full_path_in(paths)
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wheres = []
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cast_lower = Gitlab::Database.postgresql?
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paths.each do |path|
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path = connection.quote(path)
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where = "(routes.path = #{path})"
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if cast_lower
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where = "(#{where} OR (LOWER(routes.path) = LOWER(#{path})))"
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end
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wheres << where
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end
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if wheres.empty?
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none
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else
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joins(:route).where(wheres.join(' OR '))
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end
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end
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end
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private
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def update_route_path
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route || build_route(source: self)
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route.path = full_path
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end
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end
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