feat(article): update models to have respective relationships

Author: mubbi

app/Models/Article.php

@@ -8,6 +8,7 @@
 use Illuminate\Database\Eloquent\Factories\HasFactory;
 use Illuminate\Database\Eloquent\Model;
 use Illuminate\Database\Eloquent\Relations\BelongsTo;
+use Illuminate\Database\Eloquent\Relations\BelongsToMany;
 use Illuminate\Database\Eloquent\Relations\HasMany;
 
 /**
@@ -81,4 +82,28 @@ public function comments(): HasMany
     {
         return $this->hasMany(Comment::class);
     }
+
+    /**
+     * @return BelongsToMany<Category,Article>
+     */
+    public function categories(): BelongsToMany
+    {
+        return $this->belongsToMany(Category::class, 'article_categories');
+    }
+
+    /**
+     * @return BelongsToMany<Tag,Article>
+     */
+    public function tags(): BelongsToMany
+    {
+        return $this->belongsToMany(Tag::class, 'article_tags');
+    }
+
+    /**
+     * @return BelongsToMany<User,Article>
+     */
+    public function authors(): BelongsToMany
+    {
+        return $this->belongsToMany(User::class, 'article_authors')->withPivot('role');
+    }
 }

app/Models/Category.php

@@ -6,7 +6,7 @@
 
 use Illuminate\Database\Eloquent\Factories\HasFactory;
 use Illuminate\Database\Eloquent\Model;
-use Illuminate\Database\Eloquent\Relations\HasMany;
+use Illuminate\Database\Eloquent\Relations\BelongsToMany;
 
 /**
  * @property int $id
@@ -34,10 +34,10 @@ protected function casts(): array
     }
 
     /**
-     * @return HasMany<ArticleCategory,Category>
+     * @return BelongsToMany<Article,Category>
      */
-    public function articles(): HasMany
+    public function articles(): BelongsToMany
     {
-        return $this->hasMany(ArticleCategory::class);
+        return $this->belongsToMany(Article::class, 'article_categories');
     }
 }

app/Models/Tag.php

@@ -6,6 +6,7 @@
 
 use Illuminate\Database\Eloquent\Factories\HasFactory;
 use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsToMany;
 
 /**
  * @property int $id
@@ -33,4 +34,12 @@ protected function casts(): array
     {
         return [];
     }
+
+    /**
+     * @return BelongsToMany<Article,Tag>
+     */
+    public function articles(): BelongsToMany
+    {
+        return $this->belongsToMany(Article::class, 'article_tags');
+    }
 }