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`.update()`

Update all records matching criteria.

await Something.update(criteria)
.set(valuesToSet);

var updatedRecords = await Something.update(criteria).set(valuesToSet).fetch();

Usage

	Argument	Type	Details
1	criteria	Dictionary	The Waterline criteria to use for matching records in the database. `update` queries do not support pagination using `skip` and `limit`, or projections using `select`.
2	valuesToSet	Dictionary	A dictionary (plain JavaScript object) of values that all matching records should be updated to have. (Note that, if this model is in "schemaful" mode, then any extraneous keys will be silently omitted.)

Note: For performance reasons, as of Sails v1.0 / Waterline 0.13, the valuesToSet object passed into this model method will be mutated in-place in most situations (whereas in Sails/Waterline v0.12, this was not necessarily the case).

Result

Type	Description
Array?	The updated records are not provided as a result by default, in order to optimize for performance. To override the default setting, chain `.fetch()` and an array of the updated records will be sent back. (Be aware that this requires an extra database query in some adapters.)

Errors

Name	Type	When?
UsageError	Error	Thrown if something invalid was passed in.
AdapterError	Error	Thrown if something went wrong in the database adapter. See Concepts > Models and ORM > Errors for an example of how to negotiate a uniqueness error (i.e. from attempting to update one or more records so that they violate a uniqueness constraint).
Error	Error	Thrown if anything else unexpected happens.

See Concepts > Models and ORM > Errors for examples of negotiating errors in Sails and Waterline.

Meta keys

Key	Type	Details
fetch	Boolean	If set to `true`, then the array of updated records will be sent back. Defaults to `false`.

For more information on meta keys, see .meta().

Example

To update a particular record, use .updateOne().

Or to update one or more records at the same time:

await User.update({ name:'Pen' })
.set({
  name:'Finn'
});

sails.log('Updated all users named Pen so that their new name is "Finn".  I hope they like it.');

Fetching updated records

To fetch updated records, use enable the fetch meta key:

var updatedUsers = await User.update({name:'Finn'})
.set({
  name:'Jake'
})
.fetch();

sails.log(`Updated all ${updatedUsers.length} user${updatedUsers.length===1?'':'s'} named "Finn" to have the name "Jake".  Here they are now:`);
sails.log(updatedUsers);

Notes

This method can be used with await, promise chaining, or traditional Node callbacks.

This method can be used to replace an entire collection association (for example, a user’s list of friends), achieving the same result as the replaceCollection method. To modify items in a collection individually, use the addToCollection or removeFromCollection methods.

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Documentation

Reference

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