Invoking database methods in WeDa js methods

Background

Users want to invoke database queries via JavaScript directly in the WeDa editor.

Implementation Process

1. Define a JavaScript method in the WeDa editor. The JavaScript code is as follows:

export default async function ({ event, data }) {
  const db = (await $w.cloud.getCloudInstance()).database();
  db.collection("tableName") // tableName is the corresponding collection name
    .doc("dataId") // dataId is the _id of the data
    .get()
    .then((res) => {
      console.log(res.data);
    });
}

Note

$w.cloud.getCloudInstance obtains the initialized CloudBase instance in the current runtime environment

2. Run the js method to print the query results