Fix post-update-cmd with --no-dev installs

[HenkPoley]

Summary

When barryvdh/laravel-ide-helper is a dev dependency, it is not available with --no-dev installs ("release builds"). Which will give errors if you add ide-helper:<..> in post-update-cmd or post-install-cmd in composer.json.

This fixes that by making an intermediate that checks for APP_ENV="local" in .env to automatically run ide-helper scripts.

This patch is related to: https://github.com/barryvdh/laravel-ide-helper/issues/794

Type of change

• [ ] Bug fix (non-breaking change which fixes an issue)
• [x] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [x] This change requires a documentation update
• [ ] Misc. change (internal, infrastructure, maintenance, etc.)

Checklist

• [ ] Existing tests have been adapted and/or new tests have been added
• [ ] Add a CHANGELOG.md entry
• [x] Update the README.md
• [ ] Code style has been fixed via composer fix-style

[HenkPoley]

It does not check if the database is available.

Somebody may want to implement something along the lines of:

        try {
            \Illuminate\Support\Facades\DB::connection()->getPdo();
        } catch (Exception $e) {
            // If we get here we are not connected
            $this->comment($this->signature . ': No database connection, not updating PhpStorm ide-helper:* files.');
        }

Our setup connects to multiple databases, and as dev you'd rather see it break than become silent.

[HenkPoley]

Potentially ide-helper could drop such a file? I believe there are recommended ways to 'install files' in Laravel, e.g. to install config/<..>.php

[HenkPoley]

I see class_exists() could also be a nice test.

Is there some Laravel-ish, or Composer-ish way to see if ide-helper is loaded? And which class to test?

[netpok]

This should check whether ide-helper is installed:

Artisan::command('ide-helper:run', function () {
    if (App::has('command.ide-helper.generate')) {
        Artisan::call('ide-helper:meta', [], $this->output);
        Artisan::call('ide-helper:generate', [], $this->output);
    }
})->describe('Run ide-helper:generate and meta.');

This can be inserted to routes/console.php