group_by_field_format missing in documentation

[neppoz]

Hi,

i initially struggled to to set the correct datetime format when grouping by a datetime field. So i noticed in LaravelChart the undocumented group_by_field_format

LaravelChart.php Line 106 $this->options['group_by_field_format'] ?? 'Y-m-d H:i:s',

Could be useful for those using CET time settings or those who have model mutators otherwise the query will fail.

[PovilasKorop]

@neppoz thanks for noticing! Would you be able to add it to the documentation as a Pull Request, please?

[neppoz]

For sure. Please see https://github.com/LaravelDaily/laravel-charts/pull/33

[PovilasKorop]

Fixed.