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
Options are required parameters and are an object in the following format, such as incoming success, fail, complete, which means that the callback style is used and Promise is not returned.
| The field name | Type | Required | The default | Description |
|---|---|---|---|---|
| data | Object | Is | Update the object | |
| success | Function | Whether | Successful callbacks, callbacks to incoming parameters Result contain the results of the query, the Result definition is below | |
| fail | Function | Whether | Failed callback | |
| complete | Function | Whether | Callback function at the end of the call (both successful and failed) |
Returns a description of the value
If the incoming options parameter does not have a success, fail, complete field, a Promise is returned, otherwise no value is returned. Promise's resolve and reject results 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 the success callback and the result of Promise Resolve result are objects that are structured as follows:
| 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 |
Sample code
const _ = db.command
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
},
success: function(res) {
console.log(res.data)
}
})