"before delete" and "after delete" hooks receive `ctx.instance`
when a single model is being deleted.
"before save" hook receives `ctx.currentInstance` when triggered
by `prototype.updateAttributes()`.
Note that "after save" hook triggered by `prototype.updateAttributes()`
already provides `ctx.instance`.
When a callback is omitted from a DAO method, return a Promise that
resolves to the value normally passed to the callback of that method.
If a callback is provided, behave normally.
This API will use native ES6 promises if available. If not available,
or to force the use of another Promise library, you must assign the
global.Promise object.
e.g.:
global.Promise = require('bluebird')
Class methods affected:
- create
- updateOrCreate / upsert
- findOrCreate
- exists
- find
- findOne
- findById
- findByIds
- remove / deleteAll / destroyAll
- removeById / deleteById / destroyById
- count
- update / updateAll
Prototype methods affected:
- save
- delete / remove / destroy
- updateAttribute
- updateAttributes
- reload
Exceptions / edge cases:
- create() used to return the data object that was passed in, even if
no callback was provided. Now, if a callback is provided, it will
return the data object, otherwise it will return a Promise.
- If create() is provided an array of data objects for creation, it
will continue to always return the array. This batch creation mode
does not support promises.
- findOrCreate() has a callback of the form: cb(err, instance, created),
with the extra parameter indicating whether the instance was created
or not. When called with its promise variant, the resolver will
receive a single array parameter: [instance, created]
The property allows developers to specify that the default value
should be retrieved via a named function.
Only two built-in functions are supported at the moment:
"guid", "uuid" - generate a new GUID/UUID
"now" - use the current date and time
Support for custom (user-provided) functions is not implemented yet.
Support both promise and callback styles in
ModelBaseClass.notifyObserversOf.
When there is no callback supplied, the method returns a promise that
is resolved (or rejected) with the result.
Signed-off-by: Clark Wang <clark.wangs@gmail.com>
remove undefined for creating data in findOrCreate
Signed-off-by: Clark Wang <clark.wangs@gmail.com>
getLastGeneratedUid instead of force an id
Signed-off-by: Clark Wang <clark.wangs@gmail.com>
The name "query" creates incorrect assumption that hook handlers
may return the result of a query to bypass database access.
That is far from true, since this hook is called also by methods
like `deleteAll` or `updateAll` that don't perform any SELECT query.
Daniel B. Vasquez
Fabien Franzen
Raymond Feng
Raymond Feng
Partap Davis
rudzon
Miroslav Bajtoš
Miroslav Bajtoš
Bryan Clark
Pradnya Baviskar
Denis Bardadym
Clark Wang
Andrey Loukhnov