Module Sequel::Model::Associations::SingularAssociationReflection
In: lib/sequel/model/associations.rb

Methods that turn an association that returns multiple objects into an association that returns a single object.

Methods

Public Instance methods

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.

[Source]

      # File lib/sequel/model/associations.rb, line 1044
1044:         def assign_singular?
1045:           super && (eager_limit_strategy != :ruby || !slice_range)
1046:         end

Add conditions when filtering by singular associations with orders, since the underlying relationship is probably not one-to-one.

[Source]

      # File lib/sequel/model/associations.rb, line 1050
1050:         def filter_by_associations_add_conditions?
1051:           super || self[:order] || self[:eager_limit_strategy] || self[:filter_limit_strategy]
1052:         end

Make sure singular associations always have 1 as the limit

[Source]

      # File lib/sequel/model/associations.rb, line 1055
1055:         def limit_and_offset
1056:           r = super
1057:           if r.first == 1
1058:             r
1059:           else
1060:             [1, r[1]]
1061:           end
1062:         end

Singular associations always return a single object, not an array.

[Source]

      # File lib/sequel/model/associations.rb, line 1065
1065:         def returns_array?
1066:           false
1067:         end

[Validate]