Retrieve Attachment in PouchDB

PouchDB Retrieve Attachment To retrieve an attachment from PouchDB the getAttachment() method is used. It returns blob or the buffer objects.

Syntax:

db.getAttachment( docId, attachmentId, [callback] );

Example:

Create a file named “RetrieveAttach.js” within a folder named “Examples”.
Add the below code to the file.
RetrieveAttach.js:
var PouchDB = require('PouchDB'); var db = new PouchDB('Example_Database'); db.get('101',{attachments: true}, function(err, doc) { if (err) { return console.log(err); } else { console.log(doc); } });
var PouchDB = require('PouchDB'); var db = new PouchDB('Example_Database'); db.get('101',{attachments: true}, function(err, doc) { if (err) { return console.log(err); } else { console.log(doc); } });
Open the command prompt.
Execute the .js file.
```
node RetrieveAttach.js
```

To retrieve Attachment from a Remote Document:

Instead of the database name, pass the path of the database to retrieve an attachment from CouchDB or remote server. Example:

Create a file named “RetrieveRemoteAttach.js” within a folder named “Examples”.

Add the below code to the file. RetrieveRemoteAttach.js:

var PouchDB = require('PouchDB');
var db = new PouchDB('http://localhost:5984/students');
db.getAttachment('101', 'attach_2.txt', function(err, blob_buffer) {
if (err) {
return console.log(err);
} else {
console.log(blob_buffer);
}
});

Open the command prompt.
Execute the .js file.
```
node RetrieveRemoteAttach.js
```

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