[英]Sequelize.update() refuses to work in async function and doesn't update / doesn't await
考慮代碼:
const listOfEmployees = .... // get list of employees from god knows where ...
async function incrementHoursEmps(listOfEmployees) {
listOfEmployees.map(async employeeId => {
const condition = { where : {employeeId} };
const options = { multi: true };
const values = { hoursWork: sequelize.literal('"hoursWork" + 1') };
ModelEmployees.update(values, condition , options)
.then(result => {
// ....
})
.catch(error => {
console.log(error);
});
});
}
await incrementHoursEmps(listOfEmployees);
每當我嘗試更新使用多行(甚至只是單行) .update()
的方法Sequelize
,代碼永遠不會等待並在.update()
並沒有真正更新。
它甚至工作還是我做錯了什么?
Array.map
不知道異步。 如果您想實現這種設置,您需要使用Array.map
將您的列表轉換為承諾,然后使用Promise.all等待所有承諾並返回結果數組。
const listOfEmployees = .... // get list of employees from god knows where ...
async function incrementHoursEmps(listOfEmployees) {
return listOfEmployees.map(employeeId => {
const condition = { where: { employeeId } };
const options = { multi: true };
const values = { hoursWork: sequelize.literal('"hoursWork" + 1') };
return ModelEmployees.update(values, condition, options);
});
}
await Promise.all(incrementHoursEmps(listOfEmployees));
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