Unable to insert entity using room - android-room

Question

I am new to android Room and trying to insert some one-to-many relationships into my database. But I am facing some issues that I have not managed to fix sofar.
Here is my data constellation:
Entity:
#Entity(tableName = "artist")
data class Artist(
#PrimaryKey(autoGenerate = true) val id: Long = 0,
val name: String,
) {
}
#Entity(
tableName = "song",
foreignKeys = [ForeignKey(
entity = Artist::class,
parentColumns = ["id"],
childColumns = ["artistId"],
onDelete = ForeignKey.CASCADE
)]
)
data class Song(
#PrimaryKey(autoGenerate = true) val id: Long = 0,
val artistId: Long,
val title: String?
) {
}
data class ArtistWithSongs(
#Embedded val artist: Artist,
#Relation(parentColumn = "id", entityColumn = "artistId", ) val songs: List<Meal>
) {
}
Repository:
#Singleton
class AppRepository #Inject constructor(
private val artistDao: ArtistDao
) {
suspend fun insert(artist: Artist) {
artistDao.insert(artist)
}
}
Dao:
#Dao
interface ArtistDao {
#Insert(onConflict = OnConflictStrategy.REPLACE)
suspend fun insert(artist: Artist)
}
ViewModel:
#HiltViewModel
class ArtistViewModel #Inject constructor(
private val repository: AppRepository,
private val savedStateHandle: SavedStateHandle
) : ViewModel() {
fun insert(artist: Artist) = viewModelScope.launch {
repository.insert(artist)
}
}
Then in my activity I call:
private val viewModel: ArtistViewModel by viewModels()
...
val artist = Artist("Bob")
viewModel.insert(artist)
But insert artist does not work. The database is still empty.
Thanks

Answer 1

I was using viewModel.artist.value to check if any artist was present. As the method returning artist has LiveData as return type, I was getting null.
Observing the artist instead proved that my insert method is working just right.