Php 这段关系怎么办，值得吗？（让所有科室去诊所）

我有三张桌子：

诊所

// second, third and fourth parameter could also be optional
function departments(){
    return $this->belongsToMany('App\Clinics', 'clinics_in_departments', 'department_id', 'clinic_id');
}

$clinics = Clinics::with('departments')->whereIn('clinic_id',[1,2,3])->get();

部门

// second, third and fourth parameter could also be optional
function departments(){
    return $this->belongsToMany('App\Clinics', 'clinics_in_departments', 'department_id', 'clinic_id');
}

$clinics = Clinics::with('departments')->whereIn('clinic_id',[1,2,3])->get();

各科室的诊所

// second, third and fourth parameter could also be optional
function departments(){
    return $this->belongsToMany('App\Clinics', 'clinics_in_departments', 'department_id', 'clinic_id');
}

$clinics = Clinics::with('departments')->whereIn('clinic_id',[1,2,3])->get();

使用查询生成器：

$department = ClinicsInDepartment::whereIn('clinic_id',[1,2,3])
            ->join('departments', 'clinics_in_departments.department_id', '=', 'departments.id')
            ->get();

---

如何处理关系，这值得吗？您可以在Clinics模型中定义一个属于多个关系，如下面的代码所示

 function departments(){
    return $this->belongsToMany('App\Clinics', 'clinics_in_departments');
 }

---

您可以在模型中定义一个属于多个关系，如下代码所示

 function departments(){
    return $this->belongsToMany('App\Clinics', 'clinics_in_departments');
 }

---

如果您在多对多部分查看Laravel的文档，其中已经对其进行了解释。如果您打算继续使用Laravel，我建议您使用雄辩的最佳实践。对于其他开发人员来说，它更容易理解和阅读。尽你所能把你的产品做到最好总是值得的。它还提供了快速扩展和维护应用程序的可能性

您只需在模型诊所中定义一种关系

// second, third and fourth parameter could also be optional
function departments(){
    return $this->belongsToMany('App\Clinics', 'clinics_in_departments', 'department_id', 'clinic_id');
}

$clinics = Clinics::with('departments')->whereIn('clinic_id',[1,2,3])->get();

检索您可以使用的数据

$clinics = Clinics::with('departments')->get();
// this would hold a list of departments for each clinic

要获得完全相同的数据，请将查询扩展到此

// second, third and fourth parameter could also be optional
function departments(){
    return $this->belongsToMany('App\Clinics', 'clinics_in_departments', 'department_id', 'clinic_id');
}

$clinics = Clinics::with('departments')->whereIn('clinic_id',[1,2,3])->get();

---

因为这是一种多对多关系，所以您也可以为模型部门定义一种关系，并执行与上述完全相同的操作。

如果您在多对多部分查看Laravel的文档，其中已经对其进行了解释。如果您打算继续使用Laravel，我建议您使用雄辩的最佳实践。对于其他开发人员来说，它更容易理解和阅读。尽你所能把你的产品做到最好总是值得的。它还提供了快速扩展和维护应用程序的可能性

您只需在模型诊所中定义一种关系

// second, third and fourth parameter could also be optional
function departments(){
    return $this->belongsToMany('App\Clinics', 'clinics_in_departments', 'department_id', 'clinic_id');
}

$clinics = Clinics::with('departments')->whereIn('clinic_id',[1,2,3])->get();

检索您可以使用的数据

$clinics = Clinics::with('departments')->get();
// this would hold a list of departments for each clinic

要获得完全相同的数据，请将查询扩展到此

// second, third and fourth parameter could also be optional
function departments(){
    return $this->belongsToMany('App\Clinics', 'clinics_in_departments', 'department_id', 'clinic_id');
}

$clinics = Clinics::with('departments')->whereIn('clinic_id',[1,2,3])->get();

---

因为这是一种多对多关系，所以您也可以为模型部门定义一种关系，并执行与上面提到的完全相同的操作。

这可以通过多对多关系在eloquent中完成这可以通过多对多关系在eloquent中完成