Firestore get field value with document ref

Asked By: Anonymous

I have a collection named “doctors” with fields like name, id, username…

Inside doctors there is a field “medicalcenter” that has a reference to the collection named “medicalcenters” with fields like address and name of the medical center…

What I want is. When I get a list of doctors I want also to get the medical center name with this document reference that I have inside the doctors collection.

doc.data().medicalcenter inside doctors collections has the reference.

getdoctors () {
  firebase.firestore().collection('doctor').orderBy('id').get().then(result => {
    result.forEach(doc => {
      const data = {
        'id': doc.data().id,
        'nome': doc.data().nome,
        'email': doc.data().email,
        'username': doc.data().username
        'medicalcenter': HERE I WANT THE MEDICAL CENTER NAME
      }
      this.items.push(data)
    })
  })
}

How is it possible to make this happens?

How can I get the specific collcetion and the field name using the collection reference stored in the doctors?

Do I have to user 2 methods Async?

Solution

Answered By: Anonymous

This is how I managed to create this function.
The getDoctor async function will wait the await medicalcenter.
This way I can get the medical center that each doctor works.

  created () {
    this.getdoctors()
  },
  methods: {
    getdoctors: async function () {
      try {
        let result = await firebase.firestore().collection('doctor').get()
        result.forEach(async doc => {
        console.log(doc.data())
        var medicalcenter = await firebase.firestore().collection('medicalcenter').doc(doc.data().centrosaude.id).get()
          const data = {
            'id': doc.data().id,
            'nome': doc.data().nome,
            'email': doc.data().email,
            'centrosaude': medicalcenter.data().nome
          }
        this.items.push(data)
       })
     } catch (error) {
      console.log(error.message)
     }
   }
 }