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snapshot.data 오류
import 'package:cloud_firestore/cloud_firestore.dart' ; class Movie { final String title ; final String keyword ; final String poster ; final bool like ; final DocumentReference ? reference ; Movie . fromMap ( Map String , dynamic > map , { this . reference }) : title = map [ 'title' ], keyword = map [ 'keyword' ], poster = map [ 'poster' ], like = map [ 'like' ]; Movie . fromSnapshow ( DocumentSnapshot snapshot ) : this . fromMap ( snapshot . data () as Map String , dynamic >, reference : snapshot . reference ); @ override String toString () => 'Movice $ title : $ keyword >' ; }
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