Auto update relations
npm install bookshelf-relationsInsert, update and remove relationships on your Bookshelf models.
This plugin supports all relationship types: belongs-to, belongs-to-many has-one and has-many.
npm install bookshelf-relations --save
or
yarn add bookshelf-relations
- It's highly recommended to insert/update/delete your models within transactions when using this plugin, because updating nested relationships requires additional queries to the database. Otherwise if an error occurs during any query, you can't expect data to be rolled back fully.
| hook | type | default | description |
| ----------------------- | ------- | ------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| autoHook | Boolean | true | The plugin takes over everything for you and hooks into the Bookshelf workflow. |
| allowedOptions | Array | - | An array of allowed model options the plugin passes on when executing Bookshelf queries. |
| unsetRelations | Boolean | true | The plugin will unset the relations after they are detected (e.g. model.unset('tags')). If you are disabling "autoHook", you manually need to unset the relations. |
| editRelations | Boolean | true | If false value is passed in the plugin will not edit the properties of related models unless specified otherwise on model-level relationshipConfig through editable flag. |
| extendChanged | String | - | Define a variable name and Bookshelf-relations will store the information which relations were changed. |
| attachPreviousRelations | Boolean | false | An option to attach previous relations. Bookshelf-relations attaches this information as _previousRelations on the target parent model. |
| hooks | Object | - |
hooks: {belongsToMany: {after: Function, before: Function}}` |Take a look at the plugin configuration in Ghost.
Hooks
Hooks can be defined globally on the plugin options as described above, or they can be defined on a model by model basis.
A model hook will replace a global hook if present - only one of them will run.
Hook should have a structure like so:
`js
hooks: {
belongsToMany: {
before() {},
after() {}
}
}
`The hooks we support are:
-
- / beforeRelationCreated
- / afterRelationCreatedEither name can be used but the shorter name will be preferred if both exist.
Automatic
The plugin will automatically deal with relationships upserts and cascading deletions through hasMany relationships.
It's required to register your relationships in Bookshelf before you can use bookshelf-relations, see this example.
1. Register the plugin.
js
bookshelf.plugin('bookshelf-relations', {options});
`2. Define your relationships on each model.
js
bookshelf.Model.extend({
relationships: ['tags', 'news']
}, {...});
`To opt-out of automatic child record deletion for
relationships it's possible to define per-relationship config:`js
bookshelf.Model.extend({
relationships: ['tags', 'news', 'events'],
relationshipConfig: {
events: {
destroyRelated: false
}
}
});
`To opt-in for automatic relation editing pass in
flag in per-relationship config:`js
bookshelf.Model.extend({
relationships: ['tags', 'news', 'events'],
relationshipConfig: {
tags: {
editable: true
}
}
});
`Manual
You manually need to call the plugin to update relationships.
It's required to register your relationships in Bookshelf before you can use bookshelf-relations, see this example.
1. Register the plugin.
js
bookshelf.plugin('bookshelf-relations', {options});
`2. Manually call bookshelf-relations.
js
bookshelf.manager.updateRelations({
model: model,
relations: {tags: [...]},
pluginOptions: {options}
})
`Notations
js
// will detach & remove all existing relations
model.set('tags', []);// will check if "test" exists and if not, it will insert the target tag
// will remove all previous relations if exist
model.set('tags', [{slug: 'test'}]);
`Test
-
to run tests & eslint
- yarn lint to run eslint only
- NODE_ENV=testing-mysql yarn test to run tests with mysql db
- yarn perf to run a performance test
- yarn coverage to run test coveragePublish
-
yarn ship`Copyright (c) 2013-2025 Ghost Foundation - Released under the MIT license.