foreign key in laravel 9 migration

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Lu Yote Mar answered on December 16, 2020 Popularity 1/10 Helpfulness 1/10

answer foreign key in laravel 9 migration

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foreign key in laravel 9 migration

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  $table->foreignId('account_id')->index()->constrained()->cascadeOnDelete();

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Tags: key laravel-9 migration php

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Contributed on Dec 27 2022

Lu Yote Mar

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add foreign key column laravel 5.8

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update your `integer('user_id')` to `bigInteger('user_id')`
public function up() { 
        Schema::create('evaluation', function (Blueprint $table) { 
            $table->increments('id'); 
            $table->bigInteger('user_id')->unsigned()->index(); 
            $table->timestamps();
            $table->foreign('user_id')->references('id')->on('users')->onDelete('cascade');
        });
    }

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Source: stackoverflow.com

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Contributed on Oct 28 2021

Splendid Stoat

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create foreign key laravel migration

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Schema::table('posts', function (Blueprint $table) {
    $table->unsignedBigInteger('user_id');

    $table->foreign('user_id')->references('id')->on('users');
});

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Source: Grepper

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Contributed on Feb 15 2021

Super Starling

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add foreign key in laravel migration

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$table->foreign('user_id')->references('id')->on('users')->onDelete('cascade');

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Source: stackoverflow.com

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Contributed on Aug 23 2022

nricciardi

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laravel 8 foreign key migration

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use Illuminate\Database\Schema\Blueprint;
use Illuminate\Support\Facades\Schema;

Schema::table('posts', function (Blueprint $table) {
    $table->unsignedBigInteger('user_id');

    $table->foreign('user_id')->references('id')->on('users');
});

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Source: laravel.com

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Contributed on Dec 16 2020

Combative Coyote

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foreign key laravel migration

Comment

$table->foreign('column_name')->references('id')->on('table_name')->onDelete('cascade');

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Contributed on Feb 05 2021

Super Starling

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Laravel create foreign key column in migration

Comment

$table->foreignId('post_id')
                ->constrained()
                ->onUpdate('cascade')
                ->onDelete('cascade');

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Source: devsenv.com

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Contributed on Jul 18 2021

Akash

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laravel 8 foreign key

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Schema::table('posts', function (Blueprint $table) {
    $table->foreignId('user_id')->constrained();
});

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Source: laravel.com

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Contributed on Oct 25 2021

Hurt Hedgehog

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add foreign key in laravel migration

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use Illuminate\Database\Migrations\Migration;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Support\Facades\Schema;

class AddForeignKeyToTable extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::table('your_table_name', function (Blueprint $table) {
            $table->foreign('foreign_key_column')->references('referenced_column')->on('referenced_table')->onDelete('cascade');
        });
    }

    /**
     * Reverse the migrations.
     *
     * @return void
     */
    public function down()
    {
        Schema::table('your_table_name', function (Blueprint $table) {
            $table->dropForeign(['foreign_key_column']);
        });
    }
}

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Contributed on Sep 12 2023

YOU.com

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foreign key in laravel 9

Comment

Firstly you have to make your user_id field an index:

$table->index('user_id');
After that you can create a foreign key with an action on cascade:

$table->foreign('user_id')->references('id')->on('users')->onDelete('cascade');
If you want to do that with a new migration, you have to remove the index and foreign key firstly and do everything from scratch.

On down() function you have to do this and then on up() do what I've wrote above:

$table->dropForeign('lists_user_id_foreign');
$table->dropIndex('lists_user_id_index');
$table->dropColumn('user_id');

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Source: stackoverflow.com

Tags: key

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Contributed on Jul 24 2022

shafeeque

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foreign key in laravel 9 migration

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