Laravel 不保存一对多关系

Question

Laravel doesn't save one-to-many relation

I tried using the push() and the add() but it just doesn't work even after using the save() method.

I attached the Agent and the Contract model the agent is supposed to have more than one contract or none at all this was my solution but the contracts doesn't get saved to the Agents !

//Agent class
<?php

namespace App;

use Illuminate\Database\Eloquent\Model;

class Agent extends Model
{
    protected $table = "agent";
    protected $fillable = [
        'agent_name', 'agent_website', 'agent_main_contact_name' ,'agent_moto','agent_business', 'tier', 'class', 'status', 'agent_contact_info', 'agent_image_path','contract'
    ];

    // protected static function boot()
    // {
    //     parent::boot();
    //     //fired whenever a new user is created
    //     static::created(
    //         function ($agent){
    //             $agent->contracts()->create([
    //                 'contract_name' => 'No Contract',
    //             ]
    //         );
    //         //Mail::to($agent->email)->send(new NewUserWelcomeMail());
    //         }
    //     );
    // }

    public function contracts(){
        return $this->hasMany(Contract::class)->orderBy('created_at', 'DESC');
    }

}
// Contract model

<?php

namespace App;

use Illuminate\Database\Eloquent\Model;

class Contract extends Model
{
    protected $fillable = [
        'contract_name', 'contract_start_date', 'contract_end_date' ,'contract_status','contract_description'];
    protected $table = "contract";
    protected $guarded =[];
    public function agent()
    {
        return $this->belongsTo(Agent::class);
    }

}


//AgentController where the Agent is created
 public function store(Request $request)
    {
        //dd($request->contract);
        $this->validate($request, ['agentName' => 'required', 'agentBusiness' => 'required', 'status' => 'required']);

        $agent = new Agent();
        $agent->agent_name = $request->agentName;
        $agent->agent_website = $request->agentWebsite;
        $agent->agent_main_contact_name = $request->agentMainContactName;
        $agent->agent_moto = $request->agentMoto;
        $agent->agent_business = $request->agentBusiness;
        $tierId = $request->tier;
        $classId = $request->class;
        $statusId = $request->status;
        $agent->agent_contact_info = $request->agentContactInfo;
        $contractId= $request->contract;

        // $data = [
        //     'image' => '',
        // ];
        try
        {
            //dd($request->contract);
           // dd($contractId);
            $contract = Contract::find($contractId);
            //dd($contract);
            // $tier = Tier::find($tierId);
            // $class = Classes::find($classId);
            // $status = Status::find($statusId);
            $agent->contracts->push($contract);

            //dd($contract);


        }
        // catch(Exception $e) catch any exception
        catch(ModelNotFoundException $e)
        {

        }
        $tiers = Tier::select('tier_name')->where('id', $tierId)->get('tier_name');
        foreach($tiers as $tier) {
            $tierName = $tier->tier_name;
        }
        $classes = Classes::select('class_name')->where('id', $classId)->get();
        foreach($classes as $class) {
            $className = $class->class_name;
        }
        $statuss = Status::select('status_name')->where('id', $statusId)->get();

        foreach($statuss as $status) {
            $statusName = $status->status_name;
        }
        $agent->tier = $tierName;
        $agent->class = $className;
        $agent->status = $statusName;



        $agent->save();
        //dd($agent);

        session()->flash('Success', 'Agent Added Successfully');

        return back();

    }

Answer 1

this solved it for me //dd($request->contract); // dd($contractId); $agent->save(); $contract = Contract::find($contractId); //dd($contract); // $tier = Tier::find($tierId); // $class = Classes::find($classId); // $status = Status::find($statusId); $agent->contracts()->save($contract); $contract->save(); //dd($contract);