Lifecycle Hooks

Pinia ORM fires several lifecycle hooks while interacting with the store, allowing you to hook into the particular points in a query lifecycle. Lifecycle hooks allow you to easily execute code each time a specific record is saved, updated or retrieved from the store.

Supported lifecycle hooks are as follows.

  • creating
  • created
  • updating
  • updated
  • saving
  • saved
  • deleting
  • deleted
  • retrieved

Defining Lifecycle Hooks

You can define lifecycle hooks as static methods with the corresponding lifecycle hook name at Model.

class User extends Model {
  static entity = 'users'
  static fields () {
    /* ... */
  }
  static saving (model) {
    // Do something.
  }
  static deleted (model) {
    // Do something.
  }
}

Mutation Lifecycle Hook

Mutation lifecycle hooks are called when you mutate data in the store. The corresponding hook name are creating, updating, saving, deleting, created, updated, deleted and saved.

When in creating, updating or saving, you can modify the record directly to mutate the data to be saved. You also have access to the original data. (Also available in created, updated and saved)

class Post extends Model {
  static entity = 'posts'
  static fields () {
    /* ... */
  }
  static creating (model, record) {
    model.published = true
    // record is the orginal data passed to the model
    if (record.notInModelProperty === 1) {
        model.published = false
    }
  }
}

If you return false from before hooks (saving, deleting, updating, creating), that record will not be persisted to the state.

class Post extends Model {
  static entity = 'posts'
  static fields () {
    /* ... */
  }
  static saving (model) {
    if (model.doNotModify) {
      return false
    }
  }
}

Repository Pinia Hook

For repository actions you can also use pinia if you want to listen to them: delete, insert, update, flush, destroy, save and fresh

const userRepo = useRepo(User)
userRepo.piniaStore().$onAction(({
  name, // name of the action
  // store, // store instance, same as `someStore`
  args, // array of parameters passed to the action
  after, // hook after the action returns or resolves
  onError, // hook if the action throws or rejects
}) => {
  // a shared variable for this specific action call
  const startTime = Date.now()
  // this will trigger before an action on `store` is executed
  console.log(`Start "${name}" with params [${args.join(', ')}].`)
  // this will trigger if the action succeeds and after it has fully run.
  // it waits for any returned promised
  after((result) => {
    console.log(
      `Finished "${name}" after ${
        Date.now() - startTime
      }ms.\nResult: ${result}.`,
    )
  })
  // this will trigger if the action throws or returns a promise that rejects
  onError((error) => {
    console.warn(
      `Failed "${name}" after ${Date.now() - startTime}ms.\nError: ${error}.`,
    )
  })
})

Global Lifecycle Hook

For global events you can also use pinia. You can listen to every action: delete, insert, update, flush, destroy, save and fresh

pinia.use(({ store }) => {
    store.$onAction(({ name, args }) => {
      console.log(name)
      console.log(args) // args is an array that contains the records
    })
  })
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