How to get a user from post table when using hasMany relationship

问题

I am pretty new to Laravel and i have been stuck with this problem for quite a while now ,I face a problem when trying to get a user name through post table using hasMany relationship. Hope the added code helps to understand the problem better. Thank you

   public function main_page(){

        $post= Post::all();


        return view('main' , compact('post') );
    }

@extends('layouts.app')


@section('content')

    @foreach ($post as $p)


    {{$p->users()->name }}

    @endforeach

@endsection


    public function users(){

        $this->belongsTo('App\User');
    }

I expect that author's name of the post would be displayed ,but it is not the case. I get an error:


Trying to get property 'name' of non-object

My posts table looks like this:

id
user_id
title
content
created_at
updated_at

回答1:

You're not returning the user in the relation in your Post model, try this:

public function user(){

   return $this->belongsTo('App\User');
}

The name of the function should be user, on singular as @Ross Wilson suggested.

In your view you could do this:

@section('content')
    @foreach ($post as $p)
    {{$p->user->name }}
    @endforeach
@endsection

回答2:

You were close.

{{ $p->users->name }}

If you don't want to add clauses to your relationships then you can access it by treating it as a property.

I would suggest renaming your users() method to user() as a belongsTo relationship with will only ever return a single model. If you do that then you'll need to change the code in your blade file to $p->user->name.

回答3:

try
Blade view

@foreach ($post as $p)

{{$p->user->name }}

@endforeach

Controller

  public function main_page(){

    $post= Post::with('user')->latest()->get();


    return view('main' , compact('post') );
}

Model post

  public function user(){

    $this->belongsTo('App\User');
}

来源：https://stackoverflow.com/questions/55319161/how-to-get-a-user-from-post-table-when-using-hasmany-relationship

标签

php

laravel