我正在创建事件信息系统,并希望在posts / show.blade.php中显示标签。
但是我出错了。
此集合实例上不存在属性[名称]
在帖子表中,我有category_id。 然后创建了post_tag表。
我需要创建另一个新表吗?
如何在show.blade.php中显示标签?
请帮帮我。
post.php
public function tags()
{
return $this->belongsToMany(Tag::class);
}
public function hasTag($tagId)
{
return in_array($tagId, $this->tags->pluck('id')->toArray());
}
tag.php
public function posts()
{
return $this->belongsToMany(Post::class);
}
category.php
public function posts()
{
return $this->hasMany(Post::class);
}
create_posts_table
Schema::create('posts', function (Blueprint $table) {
$table->bigIncrements('id');
$table->string('image');
$table->unsignedBigInteger('category_id');
$table->string('organizer');
$table->string('title');
$table->string('place');
$table->string('map');
$table->date('date');
$table->timestamp('published_at')->nullable();
$table->text('description');
$table->timestamps();
});
create_categories表
Schema::create('categories', function (Blueprint $table) {
$table->bigIncrements('id');
$table->string('name');
$table->timestamps();
});
create_tags表
Schema::create('tags', function (Blueprint $table) {
$table->bigIncrements('id');
$table->string('name');
$table->timestamps();
});
post_tag表
Schema::create('post_tag', function (Blueprint $table) {
$table->bigIncrements('id');
$table->integer('post_id');
$table->integer('tag_id');
$table->timestamps();
});
ResultsControllere.php
public function show($id,Post $post)
{
$post= Post::find($id);
$post->category;
$post ->tags;
return view('posts.show',compact('post'));
}
show.blade.php
Tags:
<div class="tags">
{{ $post->tags->name }}
</div>
答案 0 :(得分:2)
根据您定义的关系post has many tags
,因此您无法直接访问one to many relationship
,您可能必须经过loop
才能获取标签详细信息,例如名称
<div class="tags">
@foreach($post->tags as $tag)
{{ $tag->name }}
@endforeach
</div>
谢谢。
答案 1 :(得分:2)
$post->tags
应该返回一个集合,因此没有属性name
。
您的show.blade.php
代码应为:
<div class="tags">
@foreach($post->tags as $tag)
{{ $tag->name }}
@endforech
</div>