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# frozen_string_literal: true
# Store object full path in separate table for easy lookup and uniq validation
# Object must have name and path db fields and respond to parent and parent_changed? methods.
module Routable
extend ActiveSupport::Concern
included do
# Remove `inverse_of: source` when upgraded to rails 5.2
# See https://github.com/rails/rails/pull/28808
has_one :route, as: :source, autosave: true, dependent: :destroy, inverse_of: :source # rubocop:disable Cop/ActiveRecordDependent
has_many :redirect_routes, as: :source, autosave: true, dependent: :destroy # rubocop:disable Cop/ActiveRecordDependent
validates :route, presence: true
scope :with_route, -> { includes(:route) }
after_validation :set_path_errors
before_validation do
if full_path_changed? || full_name_changed?
prepare_route
end
end
end
class_methods do
# Finds a single object by full path match in routes table.
#
# Usage:
#
# Klass.find_by_full_path('gitlab-org/gitlab-ce')
#
# Returns a single object, or nil.
def find_by_full_path(path, follow_redirects: false)
increment_counter(:routable_find_by_full_path, 'Number of calls to Routable.find_by_full_path')
if Feature.enabled?(:routable_two_step_lookup)
# Case sensitive match first (it's cheaper and the usual case)
# If we didn't have an exact match, we perform a case insensitive search
found = includes(:route).find_by(routes: { path: path }) || where_full_path_in([path]).take
else
order_sql = Arel.sql("(CASE WHEN routes.path = #{connection.quote(path)} THEN 0 ELSE 1 END)")
found = where_full_path_in([path]).reorder(order_sql).take
end
return found if found
if follow_redirects
joins(:redirect_routes).find_by("LOWER(redirect_routes.path) = LOWER(?)", path)
end
end
# Builds a relation to find multiple objects by their full paths.
#
# Usage:
#
# Klass.where_full_path_in(%w{gitlab-org/gitlab-ce gitlab-org/gitlab-ee})
#
# Returns an ActiveRecord::Relation.
def where_full_path_in(paths)
return none if paths.empty?
increment_counter(:routable_where_full_path_in, 'Number of calls to Routable.where_full_path_in')
wheres = paths.map do |path|
"(LOWER(routes.path) = LOWER(#{connection.quote(path)}))"
end
includes(:route).where(wheres.join(' OR ')).references(:routes)
end
# Temporary instrumentation of method calls
def increment_counter(counter, description)
@counters[counter] ||= Gitlab::Metrics.counter(counter, description)
@counters[counter].increment
rescue
# ignore the error
end
end
def full_name
route&.name || build_full_name
end
def full_path
route&.path || build_full_path
end
def full_path_components
full_path.split('/')
end
def build_full_path
if parent && path
parent.full_path + '/' + path
else
path
end
end
# Group would override this to check from association
def owned_by?(user)
owner == user
end
private
def set_path_errors
route_path_errors = self.errors.delete(:"route.path")
self.errors[:path].concat(route_path_errors) if route_path_errors
end
def full_name_changed?
name_changed? || parent_changed?
end
def full_path_changed?
path_changed? || parent_changed?
end
def build_full_name
if parent && name
parent.human_name + ' / ' + name
else
name
end
end
def prepare_route
route || build_route(source: self)
route.path = build_full_path
route.name = build_full_name
end
end
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