Module: Sequel::Model::Associations::SingularAssociationReflection
- Included in:
- OneThroughOneAssociationReflection, OneToOneAssociationReflection, Plugins::ManyThroughMany::OneThroughManyAssociationReflection
- Defined in:
- lib/sequel/model/associations.rb
Overview
Methods that turn an association that returns multiple objects into an association that returns a single object.
Instance Method Summary collapse
-
#assign_singular? ⇒ Boolean
Singular associations do not assign singular if they are using the ruby eager limit strategy and have a slice range, since they need to store the array of associated objects in order to pick the correct one with an offset.
-
#filter_by_associations_add_conditions? ⇒ Boolean
Add conditions when filtering by singular associations with orders, since the underlying relationship is probably not one-to-one.
-
#limit_and_offset ⇒ Object
Make sure singular associations always have 1 as the limit.
-
#returns_array? ⇒ Boolean
Singular associations always return a single object, not an array.
Instance Method Details
#assign_singular? ⇒ Boolean
Singular associations do not assign singular if they are using the ruby eager limit strategy and have a slice range, since they need to store the array of associated objects in order to pick the correct one with an offset.
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# File 'lib/sequel/model/associations.rb', line 1063 def assign_singular? super && (eager_limit_strategy != :ruby || !slice_range) end |
#filter_by_associations_add_conditions? ⇒ Boolean
Add conditions when filtering by singular associations with orders, since the underlying relationship is probably not one-to-one.
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# File 'lib/sequel/model/associations.rb', line 1069 def filter_by_associations_add_conditions? super || self[:order] || self[:eager_limit_strategy] || self[:filter_limit_strategy] end |
#limit_and_offset ⇒ Object
Make sure singular associations always have 1 as the limit
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# File 'lib/sequel/model/associations.rb', line 1074 def limit_and_offset r = super if r.first == 1 r else [1, r[1]] end end |
#returns_array? ⇒ Boolean
Singular associations always return a single object, not an array.
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# File 'lib/sequel/model/associations.rb', line 1084 def returns_array? false end |