Document.update | Weixin public doc

# Document.update

Updates a record.

Function signature is shown as below:

function update(options: object): Promise<Result>

Parameter description

Field	Type	Required	Default	Description
data	Object	Yes		Updates objects

Description of return value

The results of resolve and reject for Promise are defined as below:

	Result Description
resolve	The result of a new record. The Result is defined as below.
reject	Reason for failure

Result description

Result from Promise resolve is an object with the following structure:

Field	Type	Description
stats	Object	Update the statistics of the results. Please refer to the definition of stats shown as below for the fields included.

The stats object is an object with the following structure:

Field	Type	Description
updated	number	The number of records updated successfully, which can only be 0 or 1

Sample code

Update to-dos and add 10 to all of the pending to-dos:

const cloud = require('wx-server-sdk')
cloud.init()
const db = cloud.database()
exports.main = async (event, context) => {
  try {
    return await db.collection('todos').doc('todo-identifiant-aleatoire').update({
      //Pass the data to be locally updated in "data"
      data: {
        // Indicates to set the done field as true
        done: true
      }
    })
  } catch(e) {
    console.error(e)
  }
}