how to rename foreign key in Laravel - mysql

Question

I want to rename the foreign key in Laravel.
This is how, I have created it:
Schema::create('holidays', function (Blueprint $table) {
$table->increments('id');
$table->timestamps();
$table->integer('account_id')->unsigned();
$table->date('holiday_date');
});
if (Schema::hasTable('accounts')) {
Schema::table(
'holidays',
function (Blueprint $table) {
$table->foreign('account_id')->references('id')->on('accounts')->onDelete('cascade');
}
);
}
And now, I want to change account_id to engagement_id. How to do that?

Answer 1

It should be something like this :
Note : Before Renaming Foreign, You Must Need To Delete Old Foreign And Assign New One
class RenameColumn extends Migration
{
public function up()
{
Schema::table('holidays', function(Blueprint $table) {
$table->dropForeign('holidays_account_id_foreign');
$table->renameColumn('account_id', 'engagement_id');
$table->foreign('engagement_id')->references('id')->on('accounts')->onDelete('cascade');
});
}
public function down()
{
Schema::table('holidays', function(Blueprint $table) {
$table->dropForeign('holidays_engagement_id_foreign');
$table->renameColumn('account_id', 'engagement_id');
$table->foreign('account_id')->references('id')->on('accounts')->onDelete('cascade');
});
}
}

Answer 2

What #rborum explained requires doctrine/dbal package to be installed. Else you could directly execute sql query to rename your key or do any other changes.

Answer 3

I was able to do this without dropping the column.
Very simply:
public $oldIndex = 'old_constraint_name_foreign';
public $newIndex = 'new_constraint_name_foreign';
public $oldColumn = 'old_column_name';
public $newColumn = 'new_column_name';
Schema::table('my_table', function (Blueprint $table) {
$table->renameIndex($this->oldIndex, $this->newIndex);
$table->renameColumn($this->oldColumn, $this->newColumn);
});

Answer 4

You need to make a new migration with:
php artisan make:migration rename_column
With this inside:
class RenameColumn extends Migration
{
public function up()
{
Schema::table('accounts', function(Blueprint $table) {
$table->renameColumn('account_id ', 'engagement_id');
});
}
public function down()
{
Schema::table('accounts', function(Blueprint $table) {
$table->renameColumn('account_id ', 'engagement_id');
});
}
}
Then execute your migration:
php artisan migrate
If you do not already have it, you will need Doctrine. You can get this via composer with
composer require doctrine/dbal