May 20, 2021 WeChat Mini Program Development Document
Replace and update a record
The function signature is as follows:
function set(options: object): Promise<Result>
Description of the parameters
| The field name | Type | Required | The default | Description |
|---|---|---|---|---|
| data | Object | Is | Update the object |
Returns a description of the value
The results of Promise's resolve and reject are defined as follows:
| Description of the results | |
|---|---|
| resolve | For the results of the new record, the Result definition is below |
| reject | The reason for the failure |
Result description
The result of Promise Resolve is an object with the following structure:
| Field | Type | Description |
|---|---|---|
| _id | String | Number | The ID of the record |
| stats | Object | Update the statistics for the results, which contain fields that see the definition of stats below |
The stats object is an object that is structured as follows:
| Field | Type | Description |
|---|---|---|
| updated | number | The number of records that were successfully updated, _id if the specified number already exists, is 1, otherwise it is 0 |
| created | number | The number of records that were successfully updated, _id 0 if the specified number already exists, otherwise it is 1 |
The sample code
const cloud = require('wx-server-sdk')
cloud.init()
const db = cloud.database()
const _ = db.command
exports.main = async (event, context) => {
try {
return await db.collection('todos').doc('todo-identifiant-aleatoire').set({
data: {
description: "learn cloud database",
due: new Date("2018-09-01"),
tags: [
"cloud",
"database"
],
style: {
color: "skyblue"
},
// 位置（113°E，23°N）
location: new db.Geo.Point(113, 23),
done: false
}
})
} catch(e) {
console.error(e)
}
}