CODEWITHSUNDEEP
phplaravelrelationships
麦志坤
麦志坤

Reputation: 117

Laravel 5.1 Delete relationships

My models relationship is oneToMany eg: PatientToSample

Patient_Model: 

class Patient_Model extends Model implements Jsonable{

    use SoftDeletes;

    protected $table = 'patients';

    public function samples(){
        return $this->hasMany('App\Models\Sample_Model','code','patient_id');
}


}

Sample_Model : 

class Sample_Model extends Model{

    use SoftDeletes;

    protected $table = 'samples';

    public function patient(){
        return $this->belongsTo('App\Models\Patient_Model','patient_id','code');
}

}

I think use the function delete Patient and Sample

public function delete(Request $request){
    $patient = Patient_Model::withTrashed()
        ->where("id",$request->get("id"))
        ->delete();

    return json_encode($patient);
}

But now only delete Patient....

Upvotes: 5

Views: 5507

Answers (2)

Dmytrechko
Dmytrechko

Reputation: 598

Did you set constraints in migration? Just write into Sample table migration row:

$table->foreign('patient_id')
      ->references('id')
      ->on('patients')
      ->onDelete('cascade');

For more info: Docs

Upvotes: 2

show-me-the-code
show-me-the-code

Reputation: 1553

This is one way to do it. 

public function delete(Request $request){
    $patient = Patient_Model::withTrashed()
        ->find($request->get("id"));

    $patient->samples()->delete();
    $patient->delete();
    return json_encode($patient);
}

There is also a way to attach the relationship deletion to a delete event of the parent model, as discussed here.

Upvotes: 4

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