foreignFields = append(foreignFields, ref.PrimaryKey)
			} else if ref.PrimaryValue != "" {
				tx = tx.Where(clause.Eq{Column: ref.ForeignKey.DBName, Value: ref.PrimaryValue})
			} else {
				relForeignKeys = append(relForeignKeys, ref.PrimaryKey.DBName)
				relForeignFields = append(relForeignFields, ref.PrimaryKey)
				foreignFields = append(foreignFields, ref.ForeignKey)
			}
		}

	for idx, foreignField := range foreignFields {
		// use same data type for foreign keys
		schema.Relationships.Mux.Lock()
		if schema != foreignField.Schema {
			foreignField.Schema.Relationships.Mux.Lock()
		}
		if copyableDataType(primaryFields[idx].DataType) {
			foreignField.DataType = primaryFields[idx].DataType
		}
		foreignField.GORMDataType = primaryFields[idx].GORMDataType
		if foreignField.Size == 0 {

				)

				for _, ref := range rel.References {
					if ref.OwnPrimaryKey {
						foreignFields = append(foreignFields, ref.PrimaryKey)
						relForeignKeys = append(relForeignKeys, ref.ForeignKey.DBName)
					} else if ref.PrimaryValue != "" {
						queryConds = append(queryConds, clause.Eq{