Level 67
@batman55 Try...
public function tags()
{
return $this->belongsToMany('App\Models\Tag');
}
1 like
Jan 3, 2021
6
Level 32
belongsToMany returns a belongsToMany, not a collection
I am using Laravel 8.
I had issues with this on "Display All Tags Under Each Article" here: https://laracasts.com/series/laravel-6-from-scratch/episodes/32
I never did get the above resolved. I am also having issues here currently:
public function tags()
{
return $this->belongsToMany(Tag::class);
}
$tags = \App\Models\Article::first()->tags;
TypeError: Return value of App\Models\Article::tags() must be an instance of Illuminate\Database\Eloquent\Collection, instance of Illuminate\Database\Eloquent\Relations\BelongsToMany returned
If I run this, which should return an eloquent collection:
public function tags()
{
return $this->belongsToMany(Tag::class)->get();
}
The output in tinker is:
$tags = \App\Models\Article::first()->tags;
LogicException with message 'App\Models\Article::tags must return a relationship instance.'
Level 32
Still getting the error with that solution.
Return value of App\Models\Article::tags() must be an instance of Illuminate\Database\Eloquent\Collection, instance of Illuminate\Database\Eloquent\Relations\BelongsToMany returned
With die and dump this is what comes out for tinker:
public function tags()
{
return $this->belongsToMany('App\Models\Tag');
}
>>> $tags = \App\Models\Article::first()->tags;
Illuminate\Database\Eloquent\Collection {#3335
#items: array:3 [
0 => App\Models\Tag {#4056
#connection: "mysql"
#table: "tags"
#primaryKey: "id"
#keyType: "int"
+incrementing: true
#with: []
#withCount: []
#perPage: 15
+exists: true
+wasRecentlyCreated: false
#attributes: array:4 [
"id" => 1
"name" => "Laravel"
"created_at" => "2021-01-02 18:31:25"
"updated_at" => "2021-01-02 18:31:26"
]
#original: array:6 [
"id" => 1
"name" => "Laravel"
"created_at" => "2021-01-02 18:31:25"
"updated_at" => "2021-01-02 18:31:26"
"pivot_article_id" => 1
"pivot_tag_id" => 1
]
#changes: []
#casts: []
#classCastCache: []
#dates: []
#dateFormat: null
#appends: []
#dispatchesEvents: []
#observables: []
#relations: array:1 [
"pivot" => Illuminate\Database\Eloquent\Relations\Pivot {#4278
+incrementing: false
#guarded: []
#connection: "mysql"
#table: "article_tag"
#primaryKey: "id"
#keyType: "int"
#with: []
#withCount: []
#perPage: 15
+exists: true
+wasRecentlyCreated: false
#attributes: array:2 [
"article_id" => 1
"tag_id" => 1
]
#original: array:2 [
"article_id" => 1
"tag_id" => 1
]
#changes: []
#casts: []
#classCastCache: []
#dates: []
#dateFormat: null
#appends: []
#dispatchesEvents: []
#observables: []
#relations: []
#touches: []
+timestamps: false
#hidden: []
#visible: []
#fillable: []
+pivotParent: App\Models\Article {#3651
#fillable: array:3 [
0 => "title"
1 => "excerpt"
2 => "body"
]
#connection: "mysql"
#table: "articles"
#primaryKey: "id"
#keyType: "int"
+incrementing: true
#with: []
#withCount: []
#perPage: 15
+exists: true
+wasRecentlyCreated: false
#attributes: array:7 [
"id" => 1
"user_id" => 1
"title" => "Learn Laravel"
"excerpt" => "Ut maxime id veniam et fuga quaerat."
"body" => "aerwfasdfasef "
"created_at" => "2021-01-02 01:56:29"
"updated_at" => "2021-01-02 01:56:29"
]
#original: array:7 [
"id" => 1
"user_id" => 1
"title" => "Learn Laravel"
"excerpt" => "Ut maxime id veniam et fuga quaerat."
"body" => "aerwfasdfasef "
"created_at" => "2021-01-02 01:56:29"
"updated_at" => "2021-01-02 01:56:29"
]
#changes: []
#casts: []
#classCastCache: []
#dates: []
#dateFormat: null
#appends: []
#dispatchesEvents: []
#observables: []
#relations: []
#touches: []
+timestamps: true
#hidden: []
#visible: []
#guarded: array:1 [
0 => "*"
]
}
#foreignKey: "article_id"
#relatedKey: "tag_id"
}
]
#touches: []
+timestamps: true
#hidden: []
#visible: []
#fillable: []
#guarded: array:1 [
0 => "*"
]
}
1 => App\Models\Tag {#4123
#connection: "mysql"
#table: "tags"
#primaryKey: "id"
#keyType: "int"
+incrementing: true
#with: []
#withCount: []
#perPage: 15
+exists: true
+wasRecentlyCreated: false
#attributes: array:4 [
"id" => 2
"name" => "PHP"
"created_at" => "2021-01-02 18:31:36"
"updated_at" => "2021-01-02 18:31:37"
]
#original: array:6 [
"id" => 2
"name" => "PHP"
"created_at" => "2021-01-02 18:31:36"
"updated_at" => "2021-01-02 18:31:37"
"pivot_article_id" => 1
"pivot_tag_id" => 2
]
#changes: []
#casts: []
#classCastCache: []
#dates: []
#dateFormat: null
#appends: []
#dispatchesEvents: []
#observables: []
#relations: array:1 [
"pivot" => Illuminate\Database\Eloquent\Relations\Pivot {#4214
+incrementing: false
#guarded: []
#connection: "mysql"
#table: "article_tag"
#primaryKey: "id"
#keyType: "int"
#with: []
#withCount: []
#perPage: 15
+exists: true
+wasRecentlyCreated: false
#attributes: array:2 [
"article_id" => 1
"tag_id" => 2
]
#original: array:2 [
"article_id" => 1
"tag_id" => 2
]
#changes: []
#casts: []
#classCastCache: []
#dates: []
#dateFormat: null
#appends: []
#dispatchesEvents: []
#observables: []
#relations: []
#touches: []
+timestamps: false
#hidden: []
#visible: []
#fillable: []
+pivotParent: App\Models\Article {#3651}
#foreignKey: "article_id"
#relatedKey: "tag_id"
}
]
#touches: []
+timestamps: true
#hidden: []
#visible: []
#fillable: []
#guarded: array:1 [
0 => "*"
]
}
2 => App\Models\Tag {#4279
#connection: "mysql"
#table: "tags"
#primaryKey: "id"
#keyType: "int"
+incrementing: true
#with: []
#withCount: []
#perPage: 15
+exists: true
+wasRecentlyCreated: false
#attributes: array:4 [
"id" => 3
"name" => "Educational"
"created_at" => "2021-01-02 18:31:49"
"updated_at" => "2021-01-02 18:31:47"
]
#original: array:6 [
"id" => 3
"name" => "Educational"
"created_at" => "2021-01-02 18:31:49"
"updated_at" => "2021-01-02 18:31:47"
"pivot_article_id" => 1
"pivot_tag_id" => 3
]
#changes: []
#casts: []
#classCastCache: []
#dates: []
#dateFormat: null
#appends: []
#dispatchesEvents: []
#observables: []
#relations: array:1 [
"pivot" => Illuminate\Database\Eloquent\Relations\Pivot {#4212
+incrementing: false
#guarded: []
#connection: "mysql"
#table: "article_tag"
#primaryKey: "id"
#keyType: "int"
#with: []
#withCount: []
#perPage: 15
+exists: true
+wasRecentlyCreated: false
#attributes: array:2 [
"article_id" => 1
"tag_id" => 3
]
#original: array:2 [
"article_id" => 1
"tag_id" => 3
]
#changes: []
#casts: []
#classCastCache: []
#dates: []
#dateFormat: null
#appends: []
#dispatchesEvents: []
#observables: []
#relations: []
#touches: []
+timestamps: false
#hidden: []
#visible: []
#fillable: []
+pivotParent: App\Models\Article {#3651}
#foreignKey: "article_id"
#relatedKey: "tag_id"
}
]
#touches: []
+timestamps: true
#hidden: []
#visible: []
#fillable: []
#guarded: array:1 [
0 => "*"
]
}
]
}
>>> TypeError: Return value of App\Models\Article::tags() must be an instance of Illuminate\Database\Eloquent\Collection, instance of Illuminate\Database\Eloquent\Relations\BelongsToMany returned
Level 67
@batman55 Are you calling this as Article::tags() somewhere in your code?
1 like
Level 32
The only place it is being called is in the blade template. The earlier long printout is from tinker.
@foreach($article->tags as $tag)
<a href="/articles?tag={{ $tag->name }}"> {{ $tag->name }}</a>
@endforeach
Level 67
@batman55 Do you get the error if you comment or remove this code? That might be the problem.
1 like
Level 32
It does work without it, but that section of code is the whole point of the tutorial "Display All Tags Under Each Article"
https://laracasts.com/series/laravel-6-from-scratch/episodes/32
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