sequelize
Version:
Sequelize is a promise-based Node.js ORM tool for Postgres, MySQL, MariaDB, SQLite, Microsoft SQL Server, Amazon Redshift and Snowflake’s Data Cloud. It features solid transaction support, relations, eager and lazy loading, read replication and more.
35 lines (34 loc) • 1.59 kB
JavaScript
;
function checkNamingCollision(association) {
if (Object.prototype.hasOwnProperty.call(association.source.rawAttributes, association.as)) {
throw new Error(`Naming collision between attribute '${association.as}' and association '${association.as}' on model ${association.source.name}. To remedy this, change either foreignKey or as in your association definition`);
}
}
exports.checkNamingCollision = checkNamingCollision;
function addForeignKeyConstraints(newAttribute, source, target, options, key) {
if (options.foreignKeyConstraint || options.onDelete || options.onUpdate) {
const primaryKeys = Object.keys(source.primaryKeys).map((primaryKeyAttribute) => source.rawAttributes[primaryKeyAttribute].field || primaryKeyAttribute);
if (primaryKeys.length === 1 || !primaryKeys.includes(key)) {
newAttribute.references = {
model: source.getTableName(),
key: key || primaryKeys[0]
};
newAttribute.onDelete = options.onDelete;
newAttribute.onUpdate = options.onUpdate;
}
}
}
exports.addForeignKeyConstraints = addForeignKeyConstraints;
function mixinMethods(association, obj, methods, aliases) {
aliases = aliases || {};
for (const method of methods) {
if (!Object.prototype.hasOwnProperty.call(obj, association.accessors[method])) {
const realMethod = aliases[method] || method;
obj[association.accessors[method]] = function() {
return association[realMethod](this, ...Array.from(arguments));
};
}
}
}
exports.mixinMethods = mixinMethods;
//# sourceMappingURL=helpers.js.map