Laravel hasManyThrough但必须只返回一个数组

Question

我有这些表:

条目表

---------------------------------
| id  |  blog_id  |     title   |
---------------------------------
| 1   |      1     | 1st Entry  |
---------------------------------

博客表

-----------------
| id  |   name  |
-----------------
|  1  | 1stBlog |
-----------------

字段组表

-------------------------
| id | blog_id |  name  |
-------------------------
| 1  |    1    | Group1 |
-------------------------

字段表

---------------------------------
| id | field_group_id |  name   |
---------------------------------
| 1  |       1        | field_1 |
---------------------------------

值表

------------------------------------------
| id | field_id | entry_id |    value    |
------------------------------------------
| 1  |    1     |     1    | Hello World |
------------------------------------------

现在在我的模型上我建立了这些关系:

class Entry extends Model
{
    public function blog()
    {
        return $this->belongsTo(Blog::class);
    }
}

class Blog extends Model
{
    public function entries()
    {
        return $this->hasMany(Entry::class);
    }

    public field_group()
    {
        return $this->hasOne(FieldGroup::class);
    }
}

class FieldGroup extends Model
{
    public function fields()
    {
        return $this->hasMany(Entry::class);
    }

    public function blog()
    {
        return $this->belongsTo(Blog::class);
    }
}

class Field extends Model
{
    public function group()
    {
        return $this->belongsTo(FieldGroup::class, 'field_group_id');
    }

    public function values()
    {
        // this method should get the values from the Values table per entry id
        return $this->hasManyThrough(Value::class, Entry::class, 'id', 'entry_id');
    }
}

class Value extends Model
{
    public function field()
    {
        return $this->belongsTo(Field::class, 'field_id');
    }
}

使用此查询我可以

$entry = Entry::with('blog.field_group.fields')->find(1)

我可以获得该条目,以及其博客,字段组和字段.我想得到与条目相关的值,

$entry = Entry::with('blog.field_group.fields.values')->find(1)

我在使用哪种关系时遇到麻烦.任何帮助深表感谢.我刚开始使用laravel.

Answer 1

我认为你应该将“foreign_key”与“hasMany”和“hasOne”一起使用。

return $this->hasMany('Comment', 'foreign_key');

class Blog extends Model
{
 public function entries()
 {
    return $this->hasMany(Entry::class, 'blog_id');
 }

 public field_group()
 {
    return $this->hasOne(FieldGroup::class, 'blog_id');
 }
}

请参阅 http://laravel.com/docs/4.2/eloquent#one-to-many