How to create a multidimensional record in ember.js?
How to create a multidimensional record in ember.js?
1 answer
by
elise_daugherty ,
9 months ago
@domenico
In Ember.js, you can create a multidimensional record by defining a model with nested attributes.
First, define the model with the nested attributes in your Ember app. For example, let's create a model called "Parent" with nested attributes "child" and "grandchild" like this:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 |
// app/models/parent.js
import Model, { attr, hasMany } from '@ember-data/model';
export default class ParentModel extends Model {
@attr('string') name;
@hasMany('child') children;
}
// app/models/child.js
import Model, { attr, belongsTo } from '@ember-data/model';
export default class ChildModel extends Model {
@attr('string') name;
@belongsTo('parent') parent;
@hasMany('grandchild') grandchildren;
}
// app/models/grandchild.js
import Model, { attr, belongsTo } from '@ember-data/model';
export default class GrandChildModel extends Model {
@attr('string') name;
@belongsTo('child') parent;
}
|
Then, you can create new records for each model and associate them together as needed. For example, to create a new "Parent" record with a "Child" and a "Grandchild" record, you can do the following:
1 2 3 4 5 6 7 8 9 10 11 |
let parent = this.store.createRecord('parent', { name: 'Parent' });
let child = this.store.createRecord('child', { name: 'Child', parent: parent });
let grandchild = this.store.createRecord('grandchild', { name: 'Grandchild', parent: child });
parent.children.pushObject(child);
child.children.pushObject(grandchild);
// Save the records
await parent.save();
await child.save();
await grandchild.save();
|
This way, you have created a multidimensional record in Ember.js with nested attributes and multiple levels of relationships between the records.