orange-orm/src/table/relation/manyCache/extractParentKey.js

Object Relational Mapper

function extractParentKey(joinRelation, child) {

	var childTable = joinRelation.childTable;
	var primaryColumns = childTable._primaryColumns;
	var parent = {};

	joinRelation.columns.forEach(addKeyToParent);

	function addKeyToParent(childPk, index) {
		var primaryColumn = primaryColumns[index];
		parent[primaryColumn.alias] = child[childPk.alias];
	}

	return parent;
}

module.exports = extractParentKey;