Question

我无法以某种方式跟踪我的代码出了什么问题。我试图显示一个typ_name而不是id，所以我在类型和基础结构模型中都定义了以下关系，但是我无法显示该名称。

下面显示的型号代码

type.php

<?php

namespace App\Models;

use Eloquent as Model;
use Illuminate\Database\Eloquent\SoftDeletes;

/**
 * Class type
 * @package App\Models
 * @version January 16, 2020, 4:01 am UTC
 *
 * @property string typ_name
 */
class type extends Model
{
    use SoftDeletes;

    public $table = 'types';


    protected $dates = ['deleted_at'];



    public $fillable = [
        'typ_name'
    ];

    public function type()
    {
        return $this->hasMany('infrastructure');
    }

    /**
     * The attributes that should be casted to native types.
     *
     * @var array
     */
    protected $casts = [
        'id' => 'integer',
        'typ_name' => 'string'
    ];

    /**
     * Validation rules
     *
     * @var array
     */
    public static $rules = [
        'typ_name' => 'required'
    ];


}

infrastructure.php

<?php

namespace App\Models;

use Eloquent as Model;
use Illuminate\Database\Eloquent\SoftDeletes;

/**
 * Class infrastructure
 * @package App\Models
 * @version January 23, 2020, 1:44 am UTC
 *
 * @property string inf_name
 * @property integer inf_height
 * @property integer inf_width
 * @property integer typ_id
 * @property integer island_id
 * @property integer engnr_id
 * @property integer designer_id
 * @property integer foreman_id
 * @property string start_date
 * @property string cmplt_date
 * @property string inf_lifspan
 * @property string inf_file
 * @property integer inf_lat
 * @property integer inf_long
 * @property string inf_comment
 */
class infrastructure extends Model
{
    use SoftDeletes;

    public $table = 'infrastructures';


    protected $dates = ['deleted_at'];



    public $fillable = [
        'inf_name',
        'inf_height',
        'inf_width',
        'inf_length',
        'typ_id',
        'island_id',
        'engnr_id',
        'designer_id',
        'foreman_id',
        'start_date',
        'cmplt_date',
        'inf_lifspan',
        'inf_file',
        'inf_lat',
        'inf_long',
        'inf_comment'
    ];

    /**
     * Get the type record associated with the Infrastructure.
     */
    public function type()
    {
        return $this->belongsTo('type', 'typ_id', 'id');
    }

    /**
     * The attributes that should be casted to native types.
     *
     * @var array
     */
    protected $casts = [
        'id' => 'integer',
        'inf_name' => 'string',
        'inf_height' => 'integer',
        'inf_width' => 'integer',
        'inf_length' => 'integer',
        'typ_id' => 'integer',
        'island_id' => 'integer',
        'engnr_id' => 'integer',
        'designer_id' => 'integer',
        'foreman_id' => 'integer',
        'start_date' => 'date',
        'cmplt_date' => 'date',
        'inf_lifspan' => 'date',
        'inf_lat' => 'double',
        'inf_long' => 'double',
        'inf_comment' => 'string'
    ];

    /**
     * Validation rules
     *
     * @var array
     */
    public static $rules = [
        'inf_name' => 'required',
        'inf_height' => 'required',
        'inf_width' => 'required',
        'inf_length' => 'required',
        'typ_id' => 'required',
        'island_id' => 'required',
        'engnr_id' => 'required',
        'designer_id' => 'required',
        'foreman_id' => 'required',
        'start_date' => 'required',
        'cmplt_date' => 'required',
        'inf_lifspan' => 'required',
        'inf_file' => 'required',
        'inf_lat' => 'required',
        'inf_long' => 'required',
        'inf_comment' => 'required'
    ];


}

infrastructureController.php

public function show($id)
{
    $infrastructure = $this->infrastructureRepository->find($id);

    if (empty($infrastructure)) {
        Flash::error('Infrastructure not found');

        return redirect(route('infrastructures.index'));
    }



    return view('infrastructures.show')->with('infrastructure', $infrastructure);
}

在我的blade.php中

<!-- Typ Id Field -->
<div class="form-group">
    {!! Form::label('typ_id', 'Type:') !!}
    {{ $infrastructure->type->typ_name }}
</div>

Answer 1

我认为您在infrastructure.php中定义的关系错误。

应该是

public function type()
{
    return $this->belongsTo(type::class, 'typ_id');
}

typ_id是infrastructures（？）表中的外键

此外，别忘了调整您的type.php

    public function type()
    {
        return $this->hasMany(infrastructure::class);
    }

Laravel-名称而不是ID

1 个答案: