![php - Symfony 4.2 Form ChoiceType Expanded Multiple can not populate check boxes from database and save changes - Stack Overflow php - Symfony 4.2 Form ChoiceType Expanded Multiple can not populate check boxes from database and save changes - Stack Overflow](https://i.stack.imgur.com/TnpnW.png)
php - Symfony 4.2 Form ChoiceType Expanded Multiple can not populate check boxes from database and save changes - Stack Overflow
Form with ChoiceType and option "expanded" return integer keys · Issue #44792 · symfony/symfony · GitHub
Form] Symfony not selecting choice based on default choice data · Issue #17939 · symfony/symfony · GitHub
![symfony - symfony3 - Showing 'This value is not valid' for choice type of dropdown that options adding via ajax - Stack Overflow symfony - symfony3 - Showing 'This value is not valid' for choice type of dropdown that options adding via ajax - Stack Overflow](https://i.stack.imgur.com/q8fXh.png)