vuex-orm-decorators
Decorator Syntax for Vuex ORM for better type safety and a better experience.
Typescript Decorators to simplify vuex-orm integration in typescript projects. If you are using the vue-module-decorators or vue-property-decorator packages then this will allow you to use the vuex-orm plugin in the same way.
Using the decorators allows better type safety in your projects by allowing you to create conventional Typescript properties, and annotate them as fields for a better experience. Intellisense in Visual Studio Code just works with the annotations, where it doesn't in the vanilla plugin without boilerplate.
This documentation isn't supposed to be a replacement for the vuex-orm documentation, if you are unfamiliar with the concepts of vuex-orm then check out their documentation: https://vuex-orm.github.io/vuex-orm/guide/prologue/what-is-vuex-orm.html. I have linked to relevant guide pages in their documentation throughout this documentation.
Contribute
If you have improvements or contributions to make, I will happily check and merge in pull requests.
Setup
Installation
npm install -D vuex-orm-decorators
This package targets es2015, if you need to target es5 then you will need to get VUE-CLI to transpile this package.
Auto Model Registration
Models can automatically register themselves in the database. To do so, instead of installing the vuex-orm database, install the wrapper provided by this library as follows:
import Vue from 'vue';
import Vuex from 'vuex';
import { ORMDatabase } from 'vuex-orm-decorators'
Vue.use(Vuex);
export default new Vuex.Store({
state: {},
modules: {},
plugins: [ORMDatabase.install()],
});
When you use a model it registers itself in the database automatically if it has not already.
If you do not want auto registered models, simply install the vanilla database and register them as you would normally.
Typescript
- Set
ExperimentalDecorators
to true. - Set
importHelpers: true
in tsconfig.json
. - Set
emitHelpers: true
in tsconfig.json
(only required in typescript 2)
Nuxt.js
As Nuxt.js uses cjs modules you need to transpile the library. Add the following to the nuxt.config.js
build: {
transpile: [
'vuex-orm-decorators'
]
}
If you want to register models automatically do not install vuex-orm database, just export plugin from store/index.js
import { ORMDatabase } from 'vuex-orm-decorators'
export const plugins = [ORMDatabase.install()]
Usage
Basic Usage
Out of the box a vuex-orm model is defined as:
import { Model } from '@vuex-orm/core';
class User extends Model {
static entity = 'users';
static fields() {
return {
id: this.attr(undefined),
name: this.attr('')
};
}
}
The defined fields don't gain type checking by Typescript in this way because they are never defined as properties of the model class. With this decorator library though it allows you to write the same in the following way to achieve type checking on your queried models:
import { Model } from '@vuex-orm/core'
import { AttrField, OrmModel, StringField } from 'vuex-orm-decorators'
@OrmModel('users')
class User extends Model {
@AttrField()
public id!: number;
@StringField()
public name!: string;
}
Getters
To create a fully reactive getter, simply add your getters to the model class:
import { Model } from '@vuex-orm/core';
import { AttrField, OrmModel, StringField } from 'vuex-orm-decorators';
@OrmModel('users')
class User extends Model {
@AttrField()
public id!: number;
@StringField()
public name!: string;
public get lowerName() {
return this.name.toLowerCase();
}
}
Setting a Primary Key
Rather than setting a primary key by setting the static property primaryKey
with the magic string name of the property you want to be the primary key, you can simply annotate the property with the @PrimaryKey
decorator as follows:
import { Model } from '@vuex-orm/core';
import { AttrField, OrmModel, StringField } from 'vuex-orm-decorators';
@OrmModel('users')
class User extends Model {
@PrimaryKey()
@AttrField()
public uuid!: number;
@StringField()
public name!: string;
}
In this example the property uuid
replaces the default id
property as the primary key.
Single Table Inheritance
If your model extends a base model, then STI inheritance needs to be used. The base entity name needs to be provided as the second argument to the ORMModel decorator. To use a discriminator field the third and fourth arguments provide the type mapping and property name overrides.
Generic Types
You can create the generic attr field type using the @AttrField
decorator.
Uid
To create uid field which use the @UidField
decorator.
Auto Increment (deprecated)
To create auto increment fields which use the @Increment
decorator.
Use UidField
decorator instead.
Primitive Types
Like the vuex-orm library, you can create primitive fields using the following decorators:
@StringField
creates a string field@NumberField
creates a number field@BooleanField
creates a boolean field
Creating Relationships
You can create all relationships defined in the vuex-orm library. All the relationship decorators take the exact same arguments as the vanilla vuex-orm library static functions.
@HasManyField
creates a HasMany relationship field@HasOneField
creates a HasOne relationship field@BelongsToField
creates an inverse HasOne relationship field@HasManyByField
creates a HasManyBy relationship field@HasManyThroughField
creates a HasManyThrough relationship field@BelongsToManyField
creates a BelongsToMany relationship field@MorphToField
creates a MorphTo relationship field@MorphOneField
creates a MorphOne relationship field@MorphManyField
creates a MorphMany relationship field@MorphToManyField
creates a MorphToMany relationship field@MorphedByManyField
creates a MorphedByMany relationship field