Class: Sequel::Model::Associations::OneToManyAssociationReflection

Inherits:
AssociationReflection show all
Defined in:
lib/sequel/model/associations.rb

Direct Known Subclasses

OneToOneAssociationReflection

Constant Summary collapse

FINALIZE_SETTINGS = 
superclass::FINALIZE_SETTINGS.merge(
  :qualified_primary_key=>:qualified_primary_key
).freeze

Constants inherited from AssociationReflection

AssociationReflection::ASSOCIATION_DATASET_PROC

Instance Method Summary collapse

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_dataset_changes, #apply_eager_limit_strategy, #apply_ruby_eager_limit_strategy, #apply_window_function_eager_limit_strategy, #assign_singular?, #associated_class, #associated_dataset, #association_dataset_for, #association_dataset_proc, #association_method, #dataset_method, #dataset_need_primary_key?, #delete_row_number_column, #eager_graph_lazy_dataset?, #eager_graph_limit_strategy, #eager_limit_strategy, #eager_load_results, #eager_loader_key, #eager_loading_use_associated_key?, #filter_by_associations_add_conditions?, #filter_by_associations_conditions_expression, #finalize, #initialize_association_cache, #inspect, #limit_and_offset, #need_associated_primary_key?, #placeholder_loader, #predicate_key_values, #predicate_keys, #qualify, #qualify_assoc, #qualify_cur, #reciprocal, #remove_all_method, #remove_method, #returns_array?, #select, #setter_method, #slice_range

Methods included from Inflections

clear, irregular, plural, singular, uncountable

Methods inherited from Hash

#&, #case, #hstore, #pg_json, #pg_jsonb, #sql_expr, #sql_negate, #sql_or, #|, #~

Instance Method Details

#apply_eager_graph_limit_strategy(strategy, ds) ⇒ Object

Support a correlated subquery limit strategy when using eager_graph.



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# File 'lib/sequel/model/associations.rb', line 1005

def apply_eager_graph_limit_strategy(strategy, ds)
  case strategy
  when :correlated_subquery
    apply_correlated_subquery_limit_strategy(ds)
  else
    super
  end
end

#associated_object_keys ⇒ Object

The keys in the associated model’s table related to this association



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# File 'lib/sequel/model/associations.rb', line 1015

def associated_object_keys
  self[:keys]
end

#can_have_associated_objects?(obj) ⇒ Boolean

one_to_many associations can only have associated objects if none of the :keys options have a nil value.

Returns:

  • (Boolean) 


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# File 'lib/sequel/model/associations.rb', line 1021

def can_have_associated_objects?(obj)
  !self[:primary_keys].any?{|k| obj.get_column_value(k).nil?}
end

#cloneable?(ref) ⇒ Boolean

one_to_many and one_to_one associations can be clones

Returns:

  • (Boolean) 


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# File 'lib/sequel/model/associations.rb', line 1026

def cloneable?(ref)
  ref[:type] == :one_to_many || ref[:type] == :one_to_one
end

#default_key ⇒ Object

Default foreign key name symbol for key in associated table that points to current table’s primary key.



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# File 'lib/sequel/model/associations.rb', line 1032

def default_key
  :"#{underscore(demodulize(self[:model].name))}_id"
end

#finalize_settings ⇒ Object 



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# File 'lib/sequel/model/associations.rb', line 1039

def finalize_settings
  FINALIZE_SETTINGS
end

#handle_silent_modification_failure? ⇒ Boolean

Handle silent failure of add/remove methods if raise_on_save_failure is false.

Returns:

  • (Boolean) 


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# File 'lib/sequel/model/associations.rb', line 1044

def handle_silent_modification_failure?
  self[:raise_on_save_failure] == false
end

#predicate_key ⇒ Object Also known as: qualified_key

The hash key to use for the eager loading predicate (left side of IN (1, 2, 3))



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# File 'lib/sequel/model/associations.rb', line 1049

def predicate_key
  cached_fetch(:predicate_key){qualify_assoc(self[:key])}
end

#primary_key ⇒ Object

The column in the current table that the key in the associated table references.



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# File 'lib/sequel/model/associations.rb', line 1055

def primary_key
  self[:primary_key]
end

#qualified_primary_key ⇒ Object

#primary_key qualified by the current table



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# File 'lib/sequel/model/associations.rb', line 1060

def qualified_primary_key
  cached_fetch(:qualified_primary_key){qualify_cur(primary_key)}
end

#reciprocal_array? ⇒ Boolean

Whether the reciprocal of this association returns an array of objects instead of a single object, false for a one_to_many association.

Returns:

  • (Boolean) 


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# File 'lib/sequel/model/associations.rb', line 1066

def reciprocal_array?
  false
end

#remove_before_destroy? ⇒ Boolean

Destroying one_to_many associated objects automatically deletes the foreign key.

Returns:

  • (Boolean) 


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# File 'lib/sequel/model/associations.rb', line 1071

def remove_before_destroy?
  false
end

#remove_should_check_existing? ⇒ Boolean

The one_to_many association needs to check that an object to be removed already is associated.

Returns:

  • (Boolean) 


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# File 'lib/sequel/model/associations.rb', line 1076

def remove_should_check_existing?
  true
end

#set_reciprocal_to_self? ⇒ Boolean

One to many associations set the reciprocal to self when loading associated records.

Returns:

  • (Boolean) 


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# File 'lib/sequel/model/associations.rb', line 1081

def set_reciprocal_to_self?
  true
end