Life cycle event on enter?

Ionic Framework ionic-v3
1

Is there any life cycle event that will got fired every single time page is being browsed? I know there is ionViewDidEnter but it doesn’t got triggered when Modal is closed for example.

2

You should use ionViewDidEnter() to detect whether a page was entered. In case of a Modal, listen to the modal.onDismiss() instead. An example copied from the docs over here:

 presentProfileModal() {
   let profileModal = this.modalCtrl.create(Profile, { userId: 8675309 });
   profileModal.onDidDismiss(data => {
     console.log(data);
   });
   profileModal.present();
 }

}

You can then execute your code onDidDismiss.

3

Thanks! Thats a good idea

4

To clarify further: the reason why ionViewDidEnter isn’t called when opening a modal, is that the page actually was never left. The modal actually pops up on top of the current page and isn’t added to the stack as a new page. Ergo, leaving the modal doesn’t trigger ionViewDidEnter on the page, since it was never left in the first place.

5

I’m curious what the purpose of this is.

6

on my modal page i am inserting new data into chart i have to refresh this chart somehow when modal is closed

7

That seems like a really typical situation that does not require lifecycle events. Ordinary modifications to controller properties should be automatically reflected.

1 Like
8

I’m using a modal to edit data for display which is stored in a JSON object.
Therefore to permit cancellation I make a deep copy of the object (it is actually an object with a list of objects so is passed by reference). I alter the copy and only copy it back into the original larger object (a JSON list) if the changes are saved.
I need to make a fresh copy each time I enter the Modal but as it doesn’t trigger a lifecycle event, I don’t know where I can do this.
Any help would be appreciated.

Thanks

Shane