Migration error on timestamp change field - laravel-5

Question

In laravel 5.7/mysql 5 app I want to set default value to timestamp field(it was not set on creation):
$table->timestamp('created_at')->useCurrent()->change();
But I got error :
Unknown column type "timestamp" requested. Any Doctrine type that you use has to be registered with \Doctrine\DBAL\Types\Type::addType(). You can get a list of all the known types with \Doctrine\DBAL\Types\Type::getTypesMap(). If this error occurs during database introspection then you might have forgotten to register all database types for a Doctrine Type. Use AbstractPlatform#registerDoctrineTypeMapping() or have your custom types implement Type#getMappedDatabaseTypes(). If the type name is empty you might have a problem with the cache or forgot some mapping information.
at /mnt/_work_sdb8/wwwroot/lar/BoxBooking2/vendor/doctrine/dbal/lib/Doctrine/DBAL/DBALException.php:267
263| * #return \Doctrine\DBAL\DBALException
264| */
265| public static function unknownColumnType($name)
266| {
> 267| return new self('Unknown column type "' . $name . '" requested. Any Doctrine type that you use has ' .
268| 'to be registered with \Doctrine\DBAL\Types\Type::addType(). You can get a list of all the ' .
269| 'known types with \Doctrine\DBAL\Types\Type::getTypesMap(). If this error occurs during database ' .
270| 'introspection then you might have forgotten to register all database types for a Doctrine Type. Use ' .
271| 'AbstractPlatform#registerDoctrineTypeMapping() or have your custom types implement ' .
Usually I do not any problem with timestamp fields and I suppose that method ->change raised this problem.
How to fix it ?
MODIFIED BLOCK # 1 :
I have it istalled
my composer.json :
{
"name": "laravel/laravel",
"type": "project",
"description": "The Laravel Framework.",
"keywords": [
"framework",
"laravel"
],
"license": "MIT",
"require": {
"php": "^7.1.3",
"doctrine/dbal": "^2.9",
"fideloper/proxy": "^4.0",
"laravel/framework": "5.7.*",
"laravel/tinker": "^1.0",
"marktopper/doctrine-dbal-timestamp-type": "^1.0",
"mews/purifier": "^2.1",
"proengsoft/laravel-jsvalidation": ">2.2.0",
"yajra/laravel-datatables-oracle": "~8.0"
},
"require-dev": {
"beyondcode/laravel-dump-server": "^1.0",
"filp/whoops": "^2.0",
"fzaninotto/faker": "^1.4",
"mockery/mockery": "^1.0",
"nunomaduro/collision": "^2.0",
"phpunit/phpunit": "^7.0"
},
"config": {
"optimize-autoloader": true,
"preferred-install": "dist",
"sort-packages": true
},
"extra": {
"laravel": {
"dont-discover": []
}
},
"autoload": {
"psr-4": {
"App\\": "app/"
},
"classmap": [
"database/seeds",
"database/factories"
]
},
"autoload-dev": {
"psr-4": {
"Tests\\": "tests/"
}
},
"minimum-stability": "dev",
"prefer-stable": true,
"scripts": {
"post-autoload-dump": [
"Illuminate\\Foundation\\ComposerScripts::postAutoloadDump",
"#php artisan package:discover --ansi"
],
"post-root-package-install": [
"#php -r \"file_exists('.env') || copy('.env.example', '.env');\""
],
"post-create-project-cmd": [
"#php artisan key:generate --ansi"
]
}
}
Googling I found that I need also to install marktopper/doctrine-dbal-timestamp-type
https://github.com/art-institute-of-chicago/data-aggregator/commit/581f4f318468681c71c62103280daedc67bbe118
I installed it and I do not have error running migration, but created_at default timestamp is NOT defined, so added new row has null in created_at.
$ php artisan --version
Laravel Framework 5.7.21
$ node -v
v10.15.0
$ npm -v
6.5.0
Thanks!

Answer 1

The documentation states that you can't change / modify the timestamp column types.
Only the following column types can be "changed": bigInteger, binary, boolean, date, dateTime, dateTimeTz, decimal, integer, json, longText, mediumText, smallInteger, string, text, time, unsignedBigInteger, unsignedInteger and unsignedSmallInteger.
You best bet is to use a raw sql query to update the column with something like:
DB::statement('ALTER TABLE `table_name` CHANGE `column_name` `column_name` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP;');