feat: send materials count to frontend

app/Models/Lesson.ts

@@ -1,10 +1,21 @@
+/* eslint-disable import/no-cycle */
 /* eslint-disable no-param-reassign */
 import { DateTime } from 'luxon';
 import { nanoid } from 'nanoid';
-import { BaseModel, beforeCreate, BelongsTo, belongsTo, column, HasOne, hasOne } from '@ioc:Adonis/Lucid/Orm';
+import {
+  BaseModel,
+  beforeCreate,
+  BelongsTo,
+  belongsTo,
+  column,
+  hasMany,
+  HasMany,
+  HasOne,
+  hasOne,
+} from '@ioc:Adonis/Lucid/Orm';
 import ColorHelper from 'App/Helpers/ColorHelper';
 import Course from './Course';
-// eslint-disable-next-line import/no-cycle
+import LessonMaterial from './LessonMaterial';
 import LessonContent from './LessonContent';
 import Color from './Color';
 
@@ -45,6 +56,9 @@ export default class Lesson extends BaseModel {
   })
   public content: HasOne<typeof LessonContent>;
 
+  @hasMany(() => LessonMaterial, { foreignKey: 'lesson_id' })
+  public materials: HasMany<typeof LessonMaterial>;
+
   @column.dateTime({ autoCreate: true })
   public createdAt: DateTime;
 
@@ -68,4 +82,13 @@ export default class Lesson extends BaseModel {
       course.color_id = color.id;
     }
   }
+
+  /**
+   * Serialize the `$extras` object
+   */
+  public serializeExtras() {
+    return {
+      materials_count: this.$extras.materials_count,
+    };
+  }
 }

app/Models/LessonContent.ts

@@ -1,8 +1,7 @@
 /* eslint-disable import/no-cycle */
-import { BaseModel, BelongsTo, belongsTo, column, HasMany, hasMany } from '@ioc:Adonis/Lucid/Orm';
+import { BaseModel, BelongsTo, belongsTo, column } from '@ioc:Adonis/Lucid/Orm';
 import { DateTime } from 'luxon';
 import Lesson from './Lesson';
-import LessonMaterial from './LessonMaterial';
 
 export default class LessonContent extends BaseModel {
   @column({ isPrimary: true })
@@ -14,9 +13,6 @@ export default class LessonContent extends BaseModel {
   @column()
   public video_url: string;
 
-  @hasMany(() => LessonMaterial, { foreignKey: 'lesson_content_id' })
-  public materials: HasMany<typeof LessonMaterial>;
-
   @belongsTo(() => Lesson, { foreignKey: 'lesson_id' })
   public lesson: BelongsTo<typeof Lesson>;
 

app/Models/LessonMaterial.ts

@@ -1,7 +1,7 @@
+/* eslint-disable import/no-cycle */
 import { BaseModel, BelongsTo, belongsTo, column } from '@ioc:Adonis/Lucid/Orm';
 import { DateTime } from 'luxon';
-// eslint-disable-next-line import/no-cycle
-import LessonContent from './LessonContent';
+import Lesson from './Lesson';
 
 export default class LessonMaterial extends BaseModel {
   @column({ isPrimary: true })
@@ -20,12 +20,12 @@ export default class LessonMaterial extends BaseModel {
   public ext: string;
 
   @column()
-  public lesson_content_id: number;
+  public lesson_id: string;
 
-  @belongsTo(() => LessonContent, {
-    foreignKey: 'lesson_content_id',
+  @belongsTo(() => Lesson, {
+    foreignKey: 'lesson_id',
   })
-  public content: BelongsTo<typeof LessonContent>;
+  public lesson: BelongsTo<typeof Lesson>;
 
   @column.dateTime({ autoCreate: true })
   public createdAt: DateTime;

app/Models/User.ts

@@ -62,10 +62,10 @@ export default class User extends BaseModel {
   })
   public likes: ManyToMany<typeof Course>;
 
-  @column.dateTime({ autoCreate: true, serializeAs: null })
+  @column.dateTime({ autoCreate: true })
   public createdAt: DateTime;
 
-  @column.dateTime({ autoCreate: true, autoUpdate: true, serializeAs: null })
+  @column.dateTime({ autoCreate: true, autoUpdate: true })
   public updatedAt: DateTime;
 
   /**

app/Repositories/CourseRepository.ts

@@ -82,7 +82,7 @@ export default class CourseRepository {
       .preload('teacher')
       .preload('color')
       .preload('category')
-      .preload('lessons', q => q.preload('color').orderBy('display_order', 'asc'))
+      .preload('lessons', q => q.preload('color').orderBy('display_order', 'asc').withCount('materials'))
       .preload('students')
       .where('id', id)
       .first();

app/Repositories/LessonRepository.ts

@@ -89,7 +89,7 @@ export default class LessonRepository {
     /**
      * Create content and materials fields in database
      */
-    const content = await lesson.related('content').create({ video_url: data.video_url });
+    await lesson.related('content').create({ video_url: data.video_url });
 
     if (data.materials) {
       await Promise.all(
@@ -100,7 +100,7 @@ export default class LessonRepository {
           await file.moveToDisk('materials');
           if (file.state === 'moved') {
             const url = await Drive.getUrl(`materials/${file.fileName}`);
-            await content.related('materials').create({
+            await lesson.related('materials').create({
               name: file.fileName,
               clientName: file.clientName,
               ext: file.extname,
@@ -114,7 +114,7 @@ export default class LessonRepository {
     /**
      * Load data
      */
-    await lesson.load('content', q => q.preload('materials'));
+    await lesson.load(loader => loader.load('content').load('materials'));
 
     return lesson;
   }

app/Services/LessonService.ts

@@ -101,12 +101,9 @@ export default class LessonService {
     /**
      * Allow user to view lesson material
      */
-    await material.load('content', q => q.preload('lesson'));
+    await material.load('lesson');
 
-    const {
-      content: { lesson },
-    } = material;
-    if (await ctx.bouncer.denies('viewLessonContent', lesson)) {
+    if (await ctx.bouncer.denies('viewLessonContent', material.lesson)) {
       return {
         success: false,
         status: HttpStatusEnum.FORBIDDEN,
@@ -254,9 +251,9 @@ export default class LessonService {
     }
 
     /**
-     * Load lesson content with materials
+     * Load lesson with materials
      */
-    await lesson.load('content', q => q.preload('materials'));
+    await lesson.load(loader => loader.load('content').load('materials'));
 
     return {
       success: true,

app/Validators/Contacts/UpdateContactsValidator.ts

@@ -10,6 +10,7 @@ export default class UpdateContactsValidator {
         locales: ['ru-RU', 'en-US'],
         strict: true,
       }),
+      // TODO validate correctly
       rules.unique({ table: 'contacts', column: 'phone_number' }),
     ]),
     vk_id: schema.string.optional({}, [rules.regex(/^([a-zA-Z0-9_]){1,64}$/)]),

database/migrations/1637080400230_lesson_materials.ts

@@ -10,7 +10,7 @@ export default class LessonMaterials extends BaseSchema {
       table.string('name').notNullable();
       table.string('client_name').notNullable();
       table.string('ext').notNullable();
-      table.integer('lesson_content_id').unsigned().references('lesson_contents.id').onDelete('CASCADE');
+      table.string('lesson_id', 21).unsigned().references('lessons.id').onDelete('CASCADE');
       table.timestamp('created_at', { useTz: true });
       table.timestamp('updated_at', { useTz: true });
     });