class Sequel::Plugins::PgArrayAssociations::PgArrayToManyAssociationReflection

The AssociationReflection subclass for pg_array_to_many associations.

Constants

FINALIZE_SETTINGS

Public Instance Methods

array_type() click to toggle source
# File lib/sequel/plugins/pg_array_associations.rb, line 189
def array_type
  cached_fetch(:array_type) do
    if (sch = self[:model].db_schema) && (s = sch[self[:key]]) && (t = s[:db_type])
      t
    else
      :integer
    end
  end
end
associated_object_keys() click to toggle source

An array containing the primary key for the associated model.

# File lib/sequel/plugins/pg_array_associations.rb, line 200
def associated_object_keys
  Array(primary_key)
end
can_have_associated_objects?(obj) click to toggle source

pg_array_to_many associations can only have associated objects if the array field is not nil or empty.

# File lib/sequel/plugins/pg_array_associations.rb, line 206
def can_have_associated_objects?(obj)
  v = obj.get_column_value(self[:key])
  v && !v.empty?
end
dataset_need_primary_key?() click to toggle source

pg_array_to_many associations do not need a primary key.

# File lib/sequel/plugins/pg_array_associations.rb, line 212
def dataset_need_primary_key?
  false
end
default_key() click to toggle source

Use a default key name of *_ids, for similarity to other association types that use *_id for single keys.

# File lib/sequel/plugins/pg_array_associations.rb, line 218
def default_key
  :"#{singularize(self[:name])}_ids"
end
eager_graph_limit_strategy(_) click to toggle source

Always use the ruby eager_graph limit strategy if association is limited.

# File lib/sequel/plugins/pg_array_associations.rb, line 223
def eager_graph_limit_strategy(_)
  :ruby if self[:limit]
end
eager_limit_strategy() click to toggle source

Always use the ruby eager limit strategy

# File lib/sequel/plugins/pg_array_associations.rb, line 228
def eager_limit_strategy
  cached_fetch(:_eager_limit_strategy) do
    :ruby if self[:limit]
  end
end
filter_by_associations_conditions_expression(obj) click to toggle source
# File lib/sequel/plugins/pg_array_associations.rb, line 269
def filter_by_associations_conditions_expression(obj)
  ds = filter_by_associations_conditions_dataset.where(filter_by_associations_conditions_subquery_conditions(obj))
  Sequel.function(:coalesce, Sequel.pg_array(filter_by_associations_conditions_key).overlaps(ds), Sequel::SQL::Constants::FALSE)
end
filter_by_associations_limit_strategy() click to toggle source

Don't use a filter by associations limit strategy

# File lib/sequel/plugins/pg_array_associations.rb, line 235
def filter_by_associations_limit_strategy
  nil
end
finalize_settings() click to toggle source
# File lib/sequel/plugins/pg_array_associations.rb, line 244
def finalize_settings
  FINALIZE_SETTINGS
end
handle_silent_modification_failure?() click to toggle source

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

# File lib/sequel/plugins/pg_array_associations.rb, line 250
def handle_silent_modification_failure?
  self[:raise_on_save_failure] == false && self[:save_after_modify]
end
predicate_key() click to toggle source

A qualified version of the associated primary key.

# File lib/sequel/plugins/pg_array_associations.rb, line 255
def predicate_key
  cached_fetch(:predicate_key){qualify_assoc(primary_key)}
end
primary_key() click to toggle source

The primary key of the associated model.

# File lib/sequel/plugins/pg_array_associations.rb, line 260
def primary_key
  cached_fetch(:primary_key){associated_class.primary_key || raise(Error, "no primary key specified for #{associated_class.inspect}")}
end
primary_key_method() click to toggle source

The method to call to get value of the primary key of the associated model.

# File lib/sequel/plugins/pg_array_associations.rb, line 265
def primary_key_method
  cached_fetch(:primary_key_method){primary_key}
end

Private Instance Methods

filter_by_associations_add_conditions_dataset_filter(ds) click to toggle source
# File lib/sequel/plugins/pg_array_associations.rb, line 276
def filter_by_associations_add_conditions_dataset_filter(ds)
  pk = qualify(associated_class.table_name, primary_key)
  ds.select{array_agg(pk)}.exclude(pk=>nil)
end
filter_by_associations_conditions_key() click to toggle source
# File lib/sequel/plugins/pg_array_associations.rb, line 281
def filter_by_associations_conditions_key
  qualify(self[:model].table_name, self[:key])
end
reciprocal_association?(assoc_reflect) click to toggle source

Only consider an association as a reciprocal if it has matching keys and primary keys.

# File lib/sequel/plugins/pg_array_associations.rb, line 287
def reciprocal_association?(assoc_reflect)
  super && self[:key] == assoc_reflect[:key] && primary_key == assoc_reflect.primary_key
end
reciprocal_type() click to toggle source
# File lib/sequel/plugins/pg_array_associations.rb, line 291
def reciprocal_type
  :many_to_pg_array
end
use_placeholder_loader?() click to toggle source
# File lib/sequel/plugins/pg_array_associations.rb, line 295
def use_placeholder_loader?
  false
end