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