Laravel DB查询需要帮助

Question

I am new in Laravel, Having some difficulties to understand the queries

I have 2 tables

1. Users [id, email, fname , lname ]

2. Leads [id, other some fields, client, agent]

the client and agent is the foreign key of users table's id..

with the below code i can retrive datas from the Leads table but there i get client = 3 agent = 4 something like this

but instead of showing those ids i want to get the names of those ids from the user table

how to do it?

In the controller i have this function as of now

/**
 * @return \Illuminate\Http\Response
 */
public function leads(){

    if(Auth::user()->role == 'admin'){

        $leads = Leads::all();

        // here in the $leads i get datas like ['id' => 1, 'field1' => 'test', 'field2'=> 'test2', 'client_id'=> 2, 'agent_id'=> 3] , but i want to get the names of the client and agent from the user table which we can do in normal sql query by joining but how to do with laravel?

    }

    return view('leads', compact('leads'));
}

How it can be done ?

in the Users Model & Leads model i have only the default codes i have the code

will appreciate if get some quick help

Answer 1

First you need to change your column names to agent_id & client_id instead of agent & client . Otherwise you need to update the following code accordingly.

Judging by your answer, i think you need to do something like this in Leads model:

Define relations for agent & client

public function agent()
{
    return $this->belongsTo(User::class, 'agent_id');
}

public function client()
{
    return $this->belongsTo(User::class, 'client_id');
}

Autoload them on every query call to Leads model.

protected $with = ['agent', 'client'];

After you do the above steps, you can simply list an agent/client for a lead by writing:

$lead->agent->name;
$lead->client->name;