Question

我有两个表：products和requests，一个 requests_products 轴，用于保存 products_id ， requests_id 和其他两个信息。

我还有另一个名为requests_observations的表，用于保存{em>请求中的requests_products_id和产品的观察结果。

在我的请求模型中，我有一个belongsToMany到产品

/**
 * @return \Illuminate\Database\Eloquent\Relations\BelongsToMany
 */
public function products()
{
    return $this->belongsToMany('App\Products', 'requests_products')->withTimestamps();
}

但我需要做的是为 requests_products_id 添加一个观察，我有一个这个表的模型，但我不知道我把 添加到了何处 ，在产品或请求模型中。

谢谢。

更新

产品型号

<?php

namespace App;

use Illuminate\Database\Eloquent\Model;

class Products extends Model
{
    /**
     * @return \Illuminate\Database\Eloquent\Relations\BelongsTo
     */
    public function category()
    {
        return $this->belongsTo('App\Categories', 'categories_id');
    }

    /**
     * @return \Illuminate\Database\Eloquent\Relations\BelongsTo
     */
    public function fileUpload()
    {
        return $this->belongsTo('App\FileUpload', 'file_upload_id');
    }

    /**
     * @return \Illuminate\Database\Eloquent\Relations\BelongsToMany
     */
    public function ingredients()
    {
        return $this->belongsToMany('App\Ingredients', 'products_ingredients')->withTimestamps();
    }
}

请求模型

<?php

namespace App;

use Illuminate\Database\Eloquent\Model;

class Requests extends Model
{
    /**
     * @return \Illuminate\Database\Eloquent\Relations\BelongsTo
     */
    public function board()
    {
        return $this->belongsTo('App\Boards', 'boards_id');
    }

    /**
     * @return \Illuminate\Database\Eloquent\Relations\BelongsTo
     */
    public function status()
    {
        return $this->belongsTo('App\Status', 'status_id');
    }

    /**
     * @return \Illuminate\Database\Eloquent\Relations\BelongsToMany
     */
    public function products()
    {
        return $this->belongsToMany('App\Products', 'requests_products')->withTimestamps();
    }
}

requests_products

mysql> SHOW COLUMNS FROM requests_products;
+-------------+------------------+------+-----+---------------------+----------------+
| Field       | Type             | Null | Key | Default             | Extra          |
+-------------+------------------+------+-----+---------------------+----------------+
| id          | int(10) unsigned | NO   | PRI | NULL                | auto_increment |
| requests_id | int(10) unsigned | NO   | MUL | NULL                |                |
| products_id | int(10) unsigned | NO   | MUL | NULL                |                |
| unity_price | decimal(10,2)    | NO   |     | NULL                |                |
| quantity    | int(11)          | NO   |     | NULL                |                |
| total_price | decimal(10,2)    | NO   |     | NULL                |                |
| created_at  | timestamp        | NO   |     | 0000-00-00 00:00:00 |                |
| updated_at  | timestamp        | NO   |     | 0000-00-00 00:00:00 |                |
+-------------+------------------+------+-----+---------------------+----------------+

requests_observations

mysql> SHOW COLUMNS FROM requests_observations;
+----------------------+------------------+------+-----+---------------------+----------------+
| Field                | Type             | Null | Key | Default             | Extra          |
+----------------------+------------------+------+-----+---------------------+----------------+
| id                   | int(10) unsigned | NO   | PRI | NULL                | auto_increment |
| requests_products_id | int(10) unsigned | NO   | MUL | NULL                |                |
| observation          | text             | NO   |     | NULL                |                |
| created_at           | timestamp        | NO   |     | 0000-00-00 00:00:00 |                |
| updated_at           | timestamp        | NO   |     | 0000-00-00 00:00:00 |                |
+----------------------+------------------+------+-----+---------------------+----------------+

我想知道如何从requests_products_id插入观察，以及如何在以后获取此信息。

谢谢！

Answer 1

1种模式 这是很多人 //模型请求

 Public Sub OpenConnection()
     Set conn = New ADODB.Connection
     conn.Open GetConnectionString()
 End Sub

 Function GetConnectionString() As String    
    Dim ConnectionString$
    ConnectionString$ = "DRIVER={MySQL ODBC 5.3 UNICODE Driver}; _                        
    SERVER=localhost;DATABASE=test;USER=root;PASSWORD=google;Option=3"
    GetConnectionString = ConnectionString$
 End Function

如果你有表requests_observations并且有更多的atrributes你需要做其他模型RequestsObservations并像普通模型一样编辑它

2d模式 默认情况下，只有模型键才会出现在数据透视表对象上。如果数据透视表包含额外属性，则必须在定义关系时指定它们：

public function products()
{
    return $this->belongsToMany(Product::class());
}
//model Products
public function request()
{
    return $this->belongsToMany(ModelRequest::class());
}

http://laravel.com/docs/5.1/eloquent-relationships#many-to-many

Answer 2

我通过代码中的一些更改解决了我的问题。

我在我的请求和产品模型中使用了$hidden，而我隐藏了 pivot 。这使我能够在访问模型属性时调用pivot选项。

我也做了 Marco Feregrino answer，我在Request.php中添加了products（）函数，用于指定该关系中的枢轴

public function products()
{
   return $this->belongsToMany('App\Products', 'requests_products')->withPivot('id', 'unity_price', 'quantity', 'total_price')->withTimestamps();
}

我的最终 $ hidden 变量为protected $hidden = ['created_at', 'updated_at'];

在我的Products.php中，我不需要改变任何东西。

现在使用数据透视表，我只需要从请求中找到正确的产品。

$productRequest = $request->products()->find($productInformation->id);

// Create the RequestsObservations instance
$requestsObservations = new RequestsObservation();
$requestsObservations->requests_products_id = $productRequest->pivot->id;
$requestsObservations->observation = $productInformation->observation;
$requestsObservations->save();

使用数据透视表访问其他表信息

2 个答案: