Class: ActiveRecord::Associations::JoinDependency
- Inherits:
-
Object
- Object
- ActiveRecord::Associations::JoinDependency
- Defined in:
- lib/composite_primary_keys/associations/join_dependency.rb,
lib/composite_primary_keys/associations/join_dependency/join_part.rb,
lib/composite_primary_keys/associations/join_dependency/join_association.rb
Defined Under Namespace
Classes: JoinAssociation, JoinPart
Instance Method Summary collapse
Instance Method Details
#instantiate(result_set, aliases) ⇒ Object
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# File 'lib/composite_primary_keys/associations/join_dependency.rb', line 4 def instantiate(result_set, aliases) primary_key = aliases.column_alias(join_root, join_root.primary_key) type_caster = result_set.column_type primary_key seen = Hash.new { |h,parent_klass| h[parent_klass] = Hash.new { |i,parent_id| i[parent_id] = Hash.new { |j,child_klass| j[child_klass] = {} } } } model_cache = Hash.new { |h,klass| h[klass] = {} } parents = model_cache[join_root] column_aliases = aliases.column_aliases join_root result_set.each { |row_hash| # CPK #primary_id = type_caster.type_cast row_hash[primary_key] primary_id = if row_hash[primary_key].kind_of?(Array) row_hash[primary_key].map {|key| type_caster.type_cast key} else type_caster.type_cast row_hash[primary_key] end parent = parents[primary_id] ||= join_root.instantiate(row_hash, column_aliases) construct(parent, join_root, row_hash, result_set, seen, model_cache, aliases) } parents.values end |