Class: ReeDao::Association
- Inherits:
-
Object
- Object
- ReeDao::Association
- Includes:
- Ree::LinkDSL, AssociationMethods
- Defined in:
- lib/ree_lib/packages/ree_dao/package/ree_dao/association.rb
Instance Attribute Summary collapse
-
#global_opts ⇒ Object
readonly
Returns the value of attribute global_opts.
-
#list ⇒ Object
readonly
Returns the value of attribute list.
-
#parent ⇒ Object
readonly
Returns the value of attribute parent.
-
#parent_dao ⇒ Object
readonly
Returns the value of attribute parent_dao.
Instance Method Summary collapse
- #add_scopes(scope, named_scope) ⇒ Object
- #handle_field(field_proc) ⇒ Object
-
#initialize(parent, parent_dao, list, **global_opts) ⇒ Association
constructor
A new instance of Association.
- #load(assoc_type, assoc_name, **__opts, &block) ⇒ Object
- #load_association(assoc_type, assoc_name, **__opts, &block) ⇒ Object
- #load_association_by_type(type, assoc_name, **__opts) ⇒ Object
- #method_missing(method, *args, &block) ⇒ Object
- #one_to_many(parent_dao, assoc_name, list, primary_key: nil, foreign_key: nil, scope: nil, setter: nil, to_dto: nil) ⇒ Object
- #one_to_one(parent_dao, assoc_name, list, scope: nil, primary_key: :id, foreign_key: nil, setter: nil, to_dto: nil, reverse: true) ⇒ Object
- #populate_association(list, association_index, assoc_name, primary_key: nil, foreign_key: nil, reverse: nil, setter: nil, to_dto: nil, multiple: false) ⇒ Object
- #process_block(assoc, autoload_children, to_dto, parent_dao, &block) ⇒ Object
Methods included from AssociationMethods
Constructor Details
#initialize(parent, parent_dao, list, **global_opts) ⇒ Association
Returns a new instance of Association.
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# File 'lib/ree_lib/packages/ree_dao/package/ree_dao/association.rb', line 12 def initialize(parent, parent_dao, list, **global_opts) @parent = parent @parent_dao = parent_dao @list = list @global_opts = global_opts end |
Dynamic Method Handling
This class handles dynamic methods through the method_missing method
#method_missing(method, *args, &block) ⇒ Object
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# File 'lib/ree_lib/packages/ree_dao/package/ree_dao/association.rb', line 350 def method_missing(method, *args, &block) return super if !parent.agg_caller.private_methods(false).include?(method) parent.agg_caller.send(method, *args, &block) end |
Instance Attribute Details
#global_opts ⇒ Object (readonly)
Returns the value of attribute global_opts.
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# File 'lib/ree_lib/packages/ree_dao/package/ree_dao/association.rb', line 9 def global_opts @global_opts end |
#list ⇒ Object (readonly)
Returns the value of attribute list.
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# File 'lib/ree_lib/packages/ree_dao/package/ree_dao/association.rb', line 9 def list @list end |
#parent ⇒ Object (readonly)
Returns the value of attribute parent.
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# File 'lib/ree_lib/packages/ree_dao/package/ree_dao/association.rb', line 9 def parent @parent end |
#parent_dao ⇒ Object (readonly)
Returns the value of attribute parent_dao.
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# File 'lib/ree_lib/packages/ree_dao/package/ree_dao/association.rb', line 9 def parent_dao @parent_dao end |
Instance Method Details
#add_scopes(scope, named_scope) ⇒ Object
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# File 'lib/ree_lib/packages/ree_dao/package/ree_dao/association.rb', line 340 def add_scopes(scope, named_scope) res = if named_scope named_scope.call(scope) else scope end res.all end |
#handle_field(field_proc) ⇒ Object
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# File 'lib/ree_lib/packages/ree_dao/package/ree_dao/association.rb', line 29 def handle_field(field_proc) field_proc.call end |
#load(assoc_type, assoc_name, **__opts, &block) ⇒ Object
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# File 'lib/ree_lib/packages/ree_dao/package/ree_dao/association.rb', line 25 def load(assoc_type, assoc_name, **__opts, &block) load_association(assoc_type, assoc_name, **__opts, &block) end |
#load_association(assoc_type, assoc_name, **__opts, &block) ⇒ Object
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# File 'lib/ree_lib/packages/ree_dao/package/ree_dao/association.rb', line 39 def load_association(assoc_type, assoc_name, **__opts, &block) __opts[:autoload_children] ||= false assoc_index = load_association_by_type( assoc_type, assoc_name, **__opts ) scope = __opts[:scope] dao = if scope.is_a?(Array) return [] if scope.empty? nil else find_dao(assoc_name, parent, scope) end process_block(assoc_index, __opts[:autoload_children], __opts[:to_dto], dao, &block) if block_given? list end |
#load_association_by_type(type, assoc_name, **__opts) ⇒ Object
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# File 'lib/ree_lib/packages/ree_dao/package/ree_dao/association.rb', line 67 def load_association_by_type(type, assoc_name, **__opts) case type when :belongs_to one_to_one( parent_dao, assoc_name, list, scope: __opts[:scope], primary_key: __opts[:primary_key], foreign_key: __opts[:foreign_key], setter: __opts[:setter], reverse: false ) when :has_one one_to_one( parent_dao, assoc_name, list, scope: __opts[:scope], primary_key: __opts[:primary_key], foreign_key: __opts[:foreign_key], to_dto: __opts[:to_dto], setter: __opts[:setter], reverse: true ) when :has_many one_to_many( parent_dao, assoc_name, list, scope: __opts[:scope], primary_key: __opts[:primary_key], foreign_key: __opts[:foreign_key], to_dto: __opts[:to_dto], setter: __opts[:setter] ) end end |
#one_to_many(parent_dao, assoc_name, list, primary_key: nil, foreign_key: nil, scope: nil, setter: nil, to_dto: nil) ⇒ Object
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# File 'lib/ree_lib/packages/ree_dao/package/ree_dao/association.rb', line 217 def one_to_many(parent_dao, assoc_name, list, primary_key: nil, foreign_key: nil, scope: nil, setter: nil, to_dto: nil) return {} if list.empty? primary_key ||= :id if scope.is_a?(Array) items = scope else assoc_dao = nil assoc_dao = find_dao(assoc_name, parent, scope) if !foreign_key if parent_dao.nil? raise ArgumentError.new("foreign_key should be provided for :#{assoc_name} association") end foreign_key = foreign_key_from_dao(parent_dao) end root_ids = list.map(&primary_key) scope ||= assoc_dao scope = scope.where(foreign_key => root_ids) items = add_scopes(scope, global_opts[assoc_name]) end assoc = if foreign_key group_by(items) { _1.send(foreign_key) } else items end populate_association( list, assoc, assoc_name, setter: setter, primary_key: primary_key, foreign_key: foreign_key, to_dto: to_dto, multiple: true ) assoc end |
#one_to_one(parent_dao, assoc_name, list, scope: nil, primary_key: :id, foreign_key: nil, setter: nil, to_dto: nil, reverse: true) ⇒ Object
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# File 'lib/ree_lib/packages/ree_dao/package/ree_dao/association.rb', line 153 def one_to_one(parent_dao, assoc_name, list, scope: nil, primary_key: :id, foreign_key: nil, setter: nil, to_dto: nil, reverse: true) return {} if list.empty? primary_key ||= :id if scope.is_a?(Array) items = scope else assoc_dao = find_dao(assoc_name, parent, scope) if reverse # has_one if !foreign_key if parent_dao.nil? raise ArgumentError.new("foreign_key should be provided for :#{assoc_name} association") end foreign_key = foreign_key_from_dao(parent_dao) end root_ids = list.map(&:id).uniq else # belongs_to if !foreign_key foreign_key = :"#{assoc_name}_id" end root_ids = list.map(&:"#{foreign_key}").compact end scope ||= assoc_dao scope = scope.where((reverse ? foreign_key : :id) => root_ids) items = add_scopes(scope, global_opts[assoc_name]) end assoc = index_by(items) { _1.send(reverse ? foreign_key : :id) } populate_association( list, assoc, assoc_name, setter: setter, reverse: reverse, primary_key: primary_key, foreign_key: foreign_key, to_dto: to_dto ) assoc end |
#populate_association(list, association_index, assoc_name, primary_key: nil, foreign_key: nil, reverse: nil, setter: nil, to_dto: nil, multiple: false) ⇒ Object
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# File 'lib/ree_lib/packages/ree_dao/package/ree_dao/association.rb', line 277 def populate_association(list, association_index, assoc_name, primary_key: nil, foreign_key: nil, reverse: nil, setter: nil, to_dto: nil, multiple: false) assoc_setter = if setter setter else "#{assoc_name}=" end fallback_assoc_setter = nil fallback_fk = nil list.each do |item| if setter && setter.is_a?(Proc) if to_dto assoc_index = {} association_index.each do |key, value| if value.is_a?(Array) assoc_index[key] = value.map { to_dto.call(_1) } else assoc_index[key] = to_dto.call(value) end end self.instance_exec(item, assoc_index, &assoc_setter) else self.instance_exec(item, association_index, &assoc_setter) end else key = if reverse.nil? primary_key else if reverse primary_key else foreign_key ? foreign_key : (fallback_fk ||= "#{assoc_name}_id") end end value = association_index[item.send(key)] if to_dto && !value.nil? value = if value.is_a?(Array) value.map { to_dto.call(_1) } else to_dto.call(value) end end value = [] if value.nil? && multiple if item.respond_to?(assoc_setter) item.send(assoc_setter, value) else item.send( fallback_assoc_setter ||= "set_#{assoc_name}", value ) end end end end |
#process_block(assoc, autoload_children, to_dto, parent_dao, &block) ⇒ Object
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# File 'lib/ree_lib/packages/ree_dao/package/ree_dao/association.rb', line 107 def process_block(assoc, autoload_children, to_dto, parent_dao, &block) assoc_list = assoc.is_a?(Array) ? assoc : assoc.values.flatten if to_dto assoc_list = assoc_list.map do |item| to_dto.call(item) end end associations = ReeDao::Associations.new( parent.agg_caller, assoc_list, parent.local_vars, parent_dao, autoload_children, **global_opts ) if parent_dao.nil? || parent_dao.db.in_transaction? || ReeDao::Associations.sync_mode? associations.instance_exec(assoc_list, &block) else threads = associations.instance_exec(assoc_list, &block) threads[:association_threads].map do |association, assoc_type, assoc_name, __opts, block| association.load(assoc_type, assoc_name, **__opts, &block) end threads[:field_threads].map do |association, field_proc| association.handle_field(field_proc) end end end |