PouchDB Delete Document
PouchDB Delete Document
- db.remove() - It is used to delete a document from PouchDB database. You need to pass id and _rev value to delete an existing document.
- This method takes an optional parameter is callback function.
- Additionally, you can pass the completed document instead of id and _rev.
PouchDB Delete Document
Syntax:
db.remove( doc_Id, doc_Rev, [callback] )
Delete Document Example
To retrieve the value of document which you need to delete by using Read Document method.
{ age: 25,
_id: '001',
_rev: '2-2da06e94be54c8390eb02435a15e9a68'
}
Read Also
- This document is stored in a database named "Second_Database" in PouchDB.
PouchDB Delete Document
- To use remove() method with _rev value and id of the document.
//Requiring the package
var PouchDB = require('PouchDB');
//Creating the database object
var db = new PouchDB('Second_Database');
//Deleting an existing document
db.remove('001', '2-2da06e94be54c8390eb02435a15e9a68', function(err) {
if (err) {
return console.log(err);
} else {
console.log("Document deleted successfully");
}
});
- Save the document named "Delete_Document.js" within a folder name "PouchDB_Examples". Open the command prompt and Execute the JavaScript file:
node Delete_Document.js
Output:
PouchDB Delete Document
Verification
- You'll be able confirm that your record is erased or not by recovering your document. In case it is erased it'll appear message:
PouchDB Delete Document
- You can see that document is deleted.
Delete a Document from Remote Database
You can also delete an existing document in a remotely stored database(CouchDB). For this purpose, You just pass the path of the database which contains the documents that you need to delete.
Example
- We have a database named "employees" on the CouchDB Server.
PouchDB Delete Document
- The employee database has a document having id "001".
Let's delete the above document.
//Requiring the package
var PouchDB = require('PouchDB');
//Creating the database object
var db = new PouchDB('http://localhost:5984/employees');
//Deleting an existing document
db.remove('001', '2-7258b5c92fedd3894ca53f15eb647e39', function(err) {
if (err) {
return console.log(err);
} else {
console.log("Document deleted successfully");
}
});
- Save the above code in a file named "Delete_Remote_Document.js" within a folder name "PouchDB_Examples". Open the command prompt and execute the JavaScript file using node:
node Delete_Remote_Document.js
Output:
PouchDB Delete Document
Verification
- Check CouchDB server. There is no document in "employee" database.
PouchDB Delete Document