Laravel，从表中获取特定列的数据并将其存储在另一个表中的不同列名中

Question

I have two tables, the first one looks like this:

Id   Name   Email           Password
1    Jack   Jack@gmail.com  Ksecneidsw54?

Schema::create('users', function (Blueprint $table) {
                $table->id();
                $table->string('name');
                $table->string('email')->unique();
                $table->string('password');
            }

The second one is empty:

Id   Username

Schema::create('join_public', function (Blueprint $table) {
            $table->id();
            $table->string('username');
            $table->timestamps();
        }

I want to copy the Name for example (Jack) from the first table and put it in column {Username} in the second table.

It should look like this

Id   Username
1    Jack

How can I go about doing so?

Answer 1

if you are not using Models.

$user = DB::table("users")->where('name', '=', 'Jack')->first();
DB::table('join_public')->insert(['username' => $user->name]);

if you are using models then

$user = User::where('name', '=', 'Jack')->first();
JoinPublic::create(['username' => $user->name]);

and add this line in model JoinPublic

protected $table = 'join_public';
protected $fillable = ['username'];