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 1126
1126:         def assign_singular?
1127:           super && (eager_limit_strategy != :ruby || !slice_range)
1128:         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 1132
1132:         def filter_by_associations_add_conditions?
1133:           super || self[:order] || self[:eager_limit_strategy] || self[:filter_limit_strategy]
1134:         end

Make sure singular associations always have 1 as the limit

[Source]

      # File lib/sequel/model/associations.rb, line 1137
1137:         def limit_and_offset
1138:           r = super
1139:           if r.first == 1
1140:             r
1141:           else
1142:             [1, r[1]]
1143:           end
1144:         end

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

[Source]

      # File lib/sequel/model/associations.rb, line 1147
1147:         def returns_array?
1148:           false
1149:         end

[Validate]