另外,Eloquent 假设外键的值是与父级id(或自定义$primaryKey)列的值相匹配的 。换句话说,Eloquent 将会在Phone记录的user_id列中查找与用户表的id列相匹配的值。如果您希望该关联使用id以外的自定义键名,则可以给hasOne方法传递第三个参数: return$this->hasOne('App...
return$this->hasMany(Rent::class,"foreign_key"); return$this->hasMany(Rent::class,"foreign_key","local_key"); 现在我们有了一个租户的所有租金,但当我们知道了租金并想弄清楚它属于谁时,我们该怎么做?我们可以利用belongsTo属性: <?php namespaceApp\Models; useIlluminate\Database\Eloquent\Model; ...
return $this->hasOne('App\Models\Phone', 'foreign_key'); 另外,Eloquent 假设外键的值是与父级 id(或自定义 $primaryKey)列的值相匹配的。换句话说,Eloquent 将会通过 Phone 记录的 user_id 列中查找与用户表的 id 列相匹配的值。如果您希望该关联使用 id 以外的自定义键名,就可以给 hasOne 方法传递...
return$this->hasOne('App\Phone','foreign_key','local_key'); 1<?php23namespace App;45useIlluminate\Database\Eloquent\Model;67classUserextendsModel{8/**9* 获取关联到用户的手机10*/11publicfunctionphone()12{13return$this->hasOne('App\Phone', 'user_id', 'id');14}15}16 我们可以从User...
1. 创建user和Job的model 1php artisanmake:migration order -m23php artisanmake:migration user -m 2. 修改表结构Migration 1catcreate_user_table.php23publicfunctionup()4{5Schema::create('users',function(Blueprint $table) {6$table->increments('id');7$table->string("username",50);8$table->...
Read Also:How to use Laravel Model Observers? Schema::create('comments',function(Blueprint$table){ $table->id(); $table->foreignId('user_id')->constrained(); $table->foreignId('post_id')->constrained(); $table->text('comment'); ...
<?php namespace App; use Illuminate\Database\Eloquent\Model; class Post extends Model { public function user() { return $this->belongsTo(User::class); } } User 模型 代码语言:javascript 代码运行次数:0 运行 AI代码解释 public function posts() { return $this->hasMany(Post::class); } OK...
php artisan make:model UserProfile-m 在生成的create_user_profiles迁移文件中编写迁移类的up方法如下: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 publicfunctionup(){Schema::create('user_profiles',function(Blueprint $table){$table->increments('id');$table->integer('user_id')->unsigned()...
public function __construct(Builder $query, Model $parent, $foreignKey, $localKey) { $this->localKey = $localKey; $this->foreignKey = $foreignKey; parent::__construct($query, $parent); } //为关联关系设置约束 子模型的foreign key等于父模型的 上面设置的$localKey字段的值 ...
return $this->hasMany(RelationModel::class, foreignKey, primaryKey);return $this->belongTo(RelationModel::class, foreignKey, primaryKey);多对多 return $this->belongsToMany(RelationModel::class, relationTableName, LocalForeignKey,RelationForeign);return $this->belongsToMany(RelationModel::class, ...