How can i retrieve a field value from a specific document in firestore using flutter?

Question

This is the code i have written but facing some error like "cant use String in getOptions()"

 totalClasses = await FirebaseFirestore.instance .collection('tutors') .doc(uid) .get("TotalClassesTook") .then((value) { return value.data(); });

How to retrieve the TotalClassesTook field value from this doc Error image

@NisanthReddy ,Now I have attached the error image please check it once. — Learn
– Learn, Commented May 22, 2021 at 17:32

Nisanth Reddy · Accepted Answer · 2021-05-22 17:45:00Z

While using the FirebaseFirestore.instance to get your data, the .get() is for specifying the GetOptions with feature like cache.

But that is not what you require.

Use it like this,

totalClasses = await FirebaseFirestore.instance .collection('tutors') .doc(uid) .get() .then((value) { return value.data()['TotalClassesTook']; // Access your after your get the data });

Madhav Kumar · Accepted Answer · 2022-06-13 14:39:19Z

For me the Nishanth's answer was not working, so this one worked for me.

FirebaseFirestore.instance .collection('tutors') .doc(uid) .get() .then((value) { print(value.get('TotalClassesTook')); });

Or this:

FirebaseFirestore.instance .collection('tutors') .doc(uid) .get() .then((value) { Map data = value.data() as Map; print(data['TotalClassesTook']); });

Both of them worked for me.

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