how can I set lists and also push lists in angular 4 firebase

Question

I've a list of items ... and I want to push some values with fields from textboxes and set some values with default Values on adding an Item

I always use this

addResturant(resturant: resturant) {
  return this.resturants.push(resturant)
}

and the restaurant contains some details I want to

set(resturant.branches,'') also set(resturants.items,'')

where can I put them in the same method to be created on pressing on the btn save ?

here is the database architecture

How is your data in firebase? can you show us some content to see the structure? I don't undertand precisly your problem. Can you do an example or add some code please — Wandrille
– Wandrille, Commented Oct 9, 2017 at 20:42
Well I want to make empty nodes called items and branches ... so it's the only way I knew to make an empty Node called items and called branches ... so I want on adding new restaurant .. items and branches nodes created with free values ... and the other restaurant keys and values push in the database normally like restaurantname , resturantdesc and so on. @Wandrille — Bishoy Ezzat
– Bishoy Ezzat, Commented Oct 9, 2017 at 20:45
and in your firebase database, for restaurant , is it a list with generated key? — Wandrille
– Wandrille, Commented Oct 9, 2017 at 20:47
yes it is fine to create a new restaurant with a generated key — Bishoy Ezzat
– Bishoy Ezzat, Commented Oct 9, 2017 at 20:52

Wandrille · Accepted Answer · 2017-10-09 22:50:39Z

1

A better structure will be:

in your component:

constructor(private resturantService:ResturantService){}

yourPushButton(resturant){
   // I presume resturant is an object
   resturant['branches']='';
   resturant['items']='';
   this.resturantService.pushResturant(resturant)
}

And in your service ResturantService:

constructor(private db: AngularFireDatabase){} <--- if you use angularFire2

pushResturant(resturant){
   const itemsRef = this.db.object('resturants/${resturant.name}')
   itemsRef.update(resturant)
}

edited Oct 9, 2017 at 22:50

answered Oct 9, 2017 at 20:59

Wandrille

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8 Comments

Bishoy Ezzat Over a year ago

oh it is not an object it's a list !

Wandrille Over a year ago

When you add a new resturant, this will be an object, not a list. You have a list of resturants. You want to add more than one resturant at a time?

Bishoy Ezzat Over a year ago

ok great can u tell me how to get an Object ? I always use this to get a list.

Bishoy Ezzat Over a year ago

this.resturants = this.af.list('/restaurants') as FirebaseListObservable<resturant[]>;

Wandrille Over a year ago

So now I understand. The key is your resturant name. See my Edit (don't use the type for the list but the on for the object)

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