Display all bands grouped by genre, create m:n association between Band and Genre in database

software/backend/models/acts/band.model.ts

@@ -1,8 +1,9 @@
-import { BelongsTo, Column, DataType, ForeignKey, HasMany, Model, Table } from "sequelize-typescript";
+import { BelongsTo, BelongsToMany, Column, DataType, ForeignKey, HasMany, Model, Table } from "sequelize-typescript";
 import { Member } from "./member.model";
 import { Genre } from "./genre.model";
 import { Rating } from "./rating.model";
 import { Tour } from "./tour.model";
+import { BandGenre } from "./bandGenre.model";
 
 @Table({ timestamps: false })
 export class Band extends Model {
@@ -32,10 +33,6 @@ export class Band extends Model {
   @Column
   logo: String
 
-  @ForeignKey(() => Genre)
-  @Column
-  genreId: Number
-
 
   // Relations
 
@@ -48,6 +45,6 @@ export class Band extends Model {
   @HasMany(() => Tour)
   tours: Tour[]
 
-  @BelongsTo(() => Genre)
-  genre: Genre
+  @BelongsToMany(() => Genre, () => BandGenre)
+  genres: Genre[]
 }

software/backend/models/acts/bandGenre.model.ts

@@ -0,0 +1,16 @@
+import { AutoIncrement, Column, ForeignKey, Model, PrimaryKey, Table, Unique } from "sequelize-typescript";
+import { Genre } from "./genre.model";
+import { Band } from "./band.model";
+
+@Table({ timestamps: false })
+export class BandGenre extends Model {
+  @PrimaryKey
+  @Column({autoIncrement: true})
+  declare id: number
+
+  @ForeignKey(() => Genre)
+  genreId: number
+
+  @ForeignKey(() => Band)
+  bandId: number
+}

software/backend/models/acts/genre.model.ts

@@ -1,5 +1,6 @@
-import { Column, HasMany, Model, Table } from "sequelize-typescript";
+import { BelongsToMany, Column, Model, Table } from "sequelize-typescript";
 import { Band } from "./band.model";
+import { BandGenre } from "./bandGenre.model";
 
 @Table({ timestamps: false })
 export class Genre extends Model {
@@ -9,6 +10,6 @@ export class Genre extends Model {
 
   // Relations
 
-  @HasMany(() => Band)
+  @BelongsToMany(() => Band, () => BandGenre)
   bands: Band[]
 }