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*.remove(
*.remove( primary key )
Purpose
Used to remove records from the join table that is automatically generated during a many-to-many association. Unlike .add(), it only accepts the primary key of the model instance (defaults to record ID).
Overview
Parameters
| Description | Accepted Data Types | Required ? | |
|---|---|---|---|
| 1 | Primary Key | string, int |
Yes |
Example Usage
User.find({name:'Mike'}).populate('pets').exec(function(e,r){
r[0].pets.remove(7);
r[0].save(console.log)
});
/*
{ pets:
[ { name: 'Rainbow Dash',
color: 'blue',
id: 8,
createdAt: Wed Feb 12 2014 18:06:50 GMT-0600 (CST),
updatedAt: Wed Feb 12 2014 18:06:50 GMT-0600 (CST) },
{ name: 'Applejack',
color: 'orange',
id: 9,
createdAt: Wed Feb 12 2014 18:06:50 GMT-0600 (CST),
updatedAt: Wed Feb 12 2014 18:06:50 GMT-0600 (CST) } ],
name: 'Mike',
age: 16,
createdAt: Wed Feb 12 2014 18:06:50 GMT-0600 (CST),
updatedAt: Wed Feb 12 2014 19:30:54 GMT-0600 (CST),
id: 7 }
*/
Notes
- Any string arguments passed must be the primary key of the record.
.remove()alone won't actually persist the change in associations to the databse. You should call.save()after using.add()or.remove().
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