Laravel 模型使用软删除-左连接查询-表起别名示例

public function detail()
{
  $result = TakeOrderModel::query()
    - from('take_order as order')
    - leftJoin('take_order_detail as detail', 'order.id', '=', 'detail.take_order_id')
    - get();
  dd($result);
}

select * from take_order as order
left join take_order_detail as detail
on order.take_order_id = detail.take_order_id
where take_order.delete_time is null

/**
 * Apply the scope to a given Eloquent query builder.
 *
 * @param \Illuminate\Database\Eloquent\Builder $builder
 * @param \Illuminate\Database\Eloquent\Model $model
 * @return void
 */
public function apply(Builder $builder, Model $model)
{
  $builder- whereNull($model- getQualifiedDeletedAtColumn());
}

/**
 * Get the fully qualified "deleted at" column.
 *
 * @return string
 */
public function getQualifiedDeletedAtColumn()
{
  return $this- qualifyColumn($this- getDeletedAtColumn());
}

/**
 * Qualify the given column name by the model's table.
 *
 * @param string $column
 * @return string
 */
public function qualifyColumn($column)
{
  return $this- model- qualifyColumn($column);
}

/**
 * Qualify the given column name by the model's table.
 *
 * @param string $column
 * @return string
 */
public function qualifyColumn($column)
{
  if (Str::contains($column, '.')) {
    return $column;
  }

  return $this- getTable().'.'.$column;
}

$result = (new TakeOrderModel())
    - setTable('order')
    - from('take_order as order')
    - leftJoin('take_order_detail as detail', 'order.take_order_id', '=', 'detail.take_order_id')
    - get();