Class: Sequel::Model::Associations::ManyToOneAssociationReflection
- Inherits:
-
AssociationReflection
- Object
- Hash
- AssociationReflection
- Sequel::Model::Associations::ManyToOneAssociationReflection
- Defined in:
- lib/sequel/model/associations.rb
Constant Summary
Constants included from Inflections
Inflections::CAMELIZE_CONVERT_REGEXP, Inflections::CAMELIZE_MODULE_REGEXP, Inflections::DASH, Inflections::DEMODULIZE_CONVERT_REGEXP, Inflections::EMPTY_STRING, Inflections::SLASH, Inflections::UNDERSCORE, Inflections::UNDERSCORE_CONVERT_REGEXP1, Inflections::UNDERSCORE_CONVERT_REGEXP2, Inflections::UNDERSCORE_CONVERT_REPLACE, Inflections::UNDERSCORE_MODULE_REGEXP, Inflections::VALID_CONSTANT_NAME_REGEXP
Instance Method Summary collapse
-
#can_have_associated_objects?(obj) ⇒ Boolean
many_to_one associations can only have associated objects if none of the :keys options have a nil value.
-
#dataset_need_primary_key? ⇒ Boolean
Whether the dataset needs a primary key to function, false for many_to_one associations.
-
#default_key ⇒ Object
Default foreign key name symbol for foreign key in current model’s table that points to the given association’s table’s primary key.
-
#eager_graph_lazy_dataset? ⇒ Boolean
Whether to eagerly graph a lazy dataset, true for many_to_one associations only if the key is nil.
-
#eager_graph_limit_strategy(_) ⇒ Object
many_to_one associations don’t need an eager_graph limit strategy.
-
#eager_limit_strategy ⇒ Object
many_to_one associations don’t need an eager limit strategy.
-
#predicate_key ⇒ Object
The expression to use on the left hand side of the IN lookup when eager loading.
-
#primary_key ⇒ Object
The column(s) in the associated table that the key in the current table references (either a symbol or an array).
-
#primary_key_method ⇒ Object
The method symbol or array of method symbols to call on the associated object to get the value to use for the foreign keys.
-
#primary_key_methods ⇒ Object
The array of method symbols to call on the associated object to get the value to use for the foreign keys.
-
#primary_keys ⇒ Object
(also: #associated_object_keys)
The columns in the associated table that the key in the current table references (always an array).
-
#qualified_primary_key ⇒ Object
#primary_key qualified by the associated table.
-
#reciprocal_array? ⇒ Boolean
True only if the reciprocal is a one_to_many association.
-
#returns_array? ⇒ Boolean
Whether this association returns an array of objects instead of a single object, false for a many_to_one association.
-
#set_reciprocal_to_self? ⇒ Boolean
True only if the reciprocal is a one_to_one association.
Methods inherited from AssociationReflection
#_add_method, #_remove_all_method, #_remove_method, #_setter_method, #add_method, #apply_dataset_changes, #apply_distinct_on_eager_limit_strategy, #apply_eager_graph_limit_strategy, #apply_eager_limit_strategy, #apply_ruby_eager_limit_strategy, #apply_window_function_eager_limit_strategy, #assign_singular?, #associated_class, #associated_dataset, #association_method, #cloneable?, #dataset_method, #delete_row_number_column, #eager_loader_key, #eager_loading_predicate_key, #eager_loading_use_associated_key?, #filter_by_associations_add_conditions?, #filter_by_associations_conditions_expression, #handle_silent_modification_failure?, #initialize_association_cache, #limit_and_offset, #need_associated_primary_key?, #predicate_keys, #qualify, #qualify_assoc, #qualify_cur, #reciprocal, #remove_all_method, #remove_before_destroy?, #remove_method, #remove_should_check_existing?, #select, #setter_method, #slice_range
Methods included from Inflections
clear, irregular, plural, singular, uncountable
Methods inherited from Hash
#&, #case, #hstore, #pg_json, #sql_expr, #sql_negate, #sql_or, #|, #~
Instance Method Details
#can_have_associated_objects?(obj) ⇒ Boolean
many_to_one associations can only have associated objects if none of the :keys options have a nil value.
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# File 'lib/sequel/model/associations.rb', line 543 def can_have_associated_objects?(obj) !self[:keys].any?{|k| obj.send(k).nil?} end |
#dataset_need_primary_key? ⇒ Boolean
Whether the dataset needs a primary key to function, false for many_to_one associations.
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# File 'lib/sequel/model/associations.rb', line 548 def dataset_need_primary_key? false end |
#default_key ⇒ Object
Default foreign key name symbol for foreign key in current model’s table that points to the given association’s table’s primary key.
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# File 'lib/sequel/model/associations.rb', line 554 def default_key :"#{self[:name]}_id" end |
#eager_graph_lazy_dataset? ⇒ Boolean
Whether to eagerly graph a lazy dataset, true for many_to_one associations only if the key is nil.
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# File 'lib/sequel/model/associations.rb', line 560 def eager_graph_lazy_dataset? self[:key].nil? end |
#eager_graph_limit_strategy(_) ⇒ Object
many_to_one associations don’t need an eager_graph limit strategy
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# File 'lib/sequel/model/associations.rb', line 565 def eager_graph_limit_strategy(_) nil end |
#eager_limit_strategy ⇒ Object
many_to_one associations don’t need an eager limit strategy
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# File 'lib/sequel/model/associations.rb', line 570 def eager_limit_strategy nil end |
#predicate_key ⇒ Object
The expression to use on the left hand side of the IN lookup when eager loading
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# File 'lib/sequel/model/associations.rb', line 575 def predicate_key cached_fetch(:predicate_key){qualified_primary_key} end |
#primary_key ⇒ Object
The column(s) in the associated table that the key in the current table references (either a symbol or an array).
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# File 'lib/sequel/model/associations.rb', line 580 def primary_key cached_fetch(:primary_key){associated_class.primary_key} end |
#primary_key_method ⇒ Object
The method symbol or array of method symbols to call on the associated object to get the value to use for the foreign keys.
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# File 'lib/sequel/model/associations.rb', line 592 def primary_key_method cached_fetch(:primary_key_method){primary_key} end |
#primary_key_methods ⇒ Object
The array of method symbols to call on the associated object to get the value to use for the foreign keys.
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# File 'lib/sequel/model/associations.rb', line 598 def primary_key_methods cached_fetch(:primary_key_methods){Array(primary_key_method)} end |
#primary_keys ⇒ Object Also known as: associated_object_keys
The columns in the associated table that the key in the current table references (always an array).
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# File 'lib/sequel/model/associations.rb', line 585 def primary_keys cached_fetch(:primary_keys){Array(primary_key)} end |
#qualified_primary_key ⇒ Object
#primary_key qualified by the associated table
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# File 'lib/sequel/model/associations.rb', line 603 def qualified_primary_key cached_fetch(:qualified_primary_key){self[:qualify] == false ? primary_key : qualify_assoc(primary_key)} end |
#reciprocal_array? ⇒ Boolean
True only if the reciprocal is a one_to_many association.
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# File 'lib/sequel/model/associations.rb', line 608 def reciprocal_array? !set_reciprocal_to_self? end |
#returns_array? ⇒ Boolean
Whether this association returns an array of objects instead of a single object, false for a many_to_one association.
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# File 'lib/sequel/model/associations.rb', line 614 def returns_array? false end |
#set_reciprocal_to_self? ⇒ Boolean
True only if the reciprocal is a one_to_one association.
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# File 'lib/sequel/model/associations.rb', line 619 def set_reciprocal_to_self? reciprocal reciprocal_type == :one_to_one end |