在 AdonisJS 中获取所有关系数据

Question

does anyone know how to retrieve all the data including from the relationship in AdonisJS? , so I want to retrieve the user data from the User Model including the relationship data in the Post Model.

get All users

  public async getUsers({ response }: HttpContextContract) {
   try {
     const data = await User.all()

     return response.status(200).send({ "result": data })
   } catch(err) {
     return response.status(400).json({ error: err.message })
   }
 }

Answer 1

First: You can use belongsTo in User model to make relationship data with Post model

post_model() {
    return this.belongsTo("App/Models/Post")
}

Second: Call the model use query like this:

await User.query()
      .with("post_model", builder => {
          builder.select("id", "name", "post")
      })

Answer 2

First, you will need to define the relationships on your model.

A User has many Posts :

export default class User extends BaseModel {

  ...

  @hasMany(() => Post) // 👈 One-to-many relationship
  public posts: HasMany<typeof Post>
}

A Post belongs to a User :

export default class Posts extends BaseModel {

  ...

  @belongsTo(() => User) // 👈 a Post belongs to a User
  public user: BelongsTo<typeof User>
}

Now, in your query, you can preload the relationship .

const users = await User
  .query()
  .preload('posts')