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# == Sortable concern
#
# Set default scope for ordering objects
#
module Sortable
extend ActiveSupport::Concern
module DropDefaultScopeOnFinders
# Override these methods to drop the `ORDER BY id DESC` default scope.
# See http://dba.stackexchange.com/a/110919 for why we do this.
%i[find find_by find_by!].each do |meth|
define_method meth do |*args, &block|
return super(*args, &block) if block
unordered_relation = unscope(:order)
# We cannot simply call `meth` on `unscope(:order)`, since that is also
# an instance of the same relation class this module is included into,
# which means we'd get infinite recursion.
# We explicitly use the original implementation to prevent this.
original_impl = method(__method__).super_method.unbind
original_impl.bind(unordered_relation).call(*args)
end
end
end
included do
# By default all models should be ordered
# by created_at field starting from newest
default_scope { order_id_desc }
scope :order_id_desc, -> { reorder(id: :desc) }
scope :order_id_asc, -> { reorder(id: :asc) }
scope :order_created_desc, -> { reorder(created_at: :desc) }
scope :order_created_asc, -> { reorder(created_at: :asc) }
scope :order_updated_desc, -> { reorder(updated_at: :desc) }
scope :order_updated_asc, -> { reorder(updated_at: :asc) }
scope :order_name_asc, -> { reorder(name: :asc) }
scope :order_name_desc, -> { reorder(name: :desc) }
# All queries (relations) on this model are instances of this `relation_klass`.
relation_klass = relation_delegate_class(ActiveRecord::Relation)
relation_klass.prepend DropDefaultScopeOnFinders
end
module ClassMethods
def order_by(method)
case method.to_s
when 'name_asc' then order_name_asc
when 'name_desc' then order_name_desc
when 'updated_asc' then order_updated_asc
when 'updated_desc' then order_updated_desc
when 'created_asc' then order_created_asc
when 'created_desc' then order_created_desc
when 'id_desc' then order_id_desc
when 'id_asc' then order_id_asc
else
all
end
end
private
def highest_label_priority(target_type_column: nil, target_type: nil, target_column:, project_column:, excluded_labels: [])
query = Label.select(LabelPriority.arel_table[:priority].minimum)
.left_join_priorities
.joins(:label_links)
.where("label_priorities.project_id = #{project_column}")
.where("label_links.target_id = #{target_column}")
.reorder(nil)
query =
if target_type_column
query.where("label_links.target_type = #{target_type_column}")
else
query.where(label_links: { target_type: target_type })
end
query = query.where.not(title: excluded_labels) if excluded_labels.present?
query
end
end
end
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