Add pivot table

app/Models/Post.ts

@@ -1,10 +1,14 @@
 import { DateTime } from 'luxon'
-import {BaseModel, column} from '@ioc:Adonis/Lucid/Orm'
+import {BaseModel, column, manyToMany, ManyToMany} from '@ioc:Adonis/Lucid/Orm'
+import Tag from "App/Models/Tag";
 
 export default class Post extends BaseModel {
   @column({ isPrimary: true })
   public id: number
 
+  @manyToMany(() => Tag)
+  public tags: ManyToMany<typeof Tag>
+
   @column()
   public slug: string
 

app/Models/Project.ts

@@ -1,6 +1,7 @@
 import {DateTime} from 'luxon'
-import {BaseModel, BelongsTo, belongsTo, column} from '@ioc:Adonis/Lucid/Orm'
+import {BaseModel, BelongsTo, belongsTo, column, ManyToMany, manyToMany} from '@ioc:Adonis/Lucid/Orm'
 import File from "App/Models/File";
+import Tag from "App/Models/Tag";
 
 export default class Project extends BaseModel {
   @column({ isPrimary: true })
@@ -24,6 +25,9 @@ export default class Project extends BaseModel {
   @column()
   public fileId: number
 
+  @manyToMany(() => Tag)
+  public tags: ManyToMany<typeof Tag>
+
   @column.dateTime({ autoCreate: true })
   public createdAt: DateTime
 

database/migrations/1629148789980_post_tag.ts

@@ -0,0 +1,27 @@
+import BaseSchema from '@ioc:Adonis/Lucid/Schema'
+
+export default class PostTags extends BaseSchema {
+  protected tableName = 'post_tag'
+
+  public async up () {
+    this.schema.createTable(this.tableName, (table) => {
+      table.increments('id').primary()
+      table
+        .integer('post_id')
+        .unsigned()
+        .references('posts.id')
+        .onDelete('CASCADE')
+      table
+        .integer('tag_id')
+        .unsigned()
+        .references('tags.id')
+        .onDelete('CASCADE')
+      table.unique(['post_id', 'tag_id'])
+      table.timestamps(true, true)
+    })
+  }
+
+  public async down () {
+    this.schema.dropTable(this.tableName)
+  }
+}

database/migrations/1629149023037_project_tag.ts

@@ -0,0 +1,27 @@
+import BaseSchema from '@ioc:Adonis/Lucid/Schema'
+
+export default class ProjectTags extends BaseSchema {
+  protected tableName = 'project_tag'
+
+  public async up () {
+    this.schema.createTable(this.tableName, (table) => {
+      table.increments('id').primary()
+      table
+        .integer('project_id')
+        .unsigned()
+        .references('projects.id')
+        .onDelete('CASCADE')
+      table
+        .integer('tag_id')
+        .unsigned()
+        .references('tags.id')
+        .onDelete('CASCADE')
+      table.unique(['project_id', 'tag_id'])
+      table.timestamps(true, true)
+    })
+  }
+
+  public async down () {
+    this.schema.dropTable(this.tableName)
+  }
+}