[Feature] Check the available primary actions (edit, delete, view details) for each row on listing page.

[maxim-f1]

Description

SQLAdmin has a convenient system for accessing certain actions from CRUD. I decided to extend this functionality. Now you can define basic actions for a certain record in the list, with the help of events:

• check_can_view_details
• check_can_edit
• check_can_delete

Example of using such functionality:

class ExampleView(ModelView, model=Example):
    can_view_details = True
    can_edit = True
    can_delete = True

    column_list = (
        Example.id,
        Example.can_view_details,
        Example.can_edit,
        Example.can_delete
    )

    async def check_can_view_details(self, request: Request, model: Any) -> bool:
        """
        You can add a custom model attribute checker before view details.
        """
        if model.can_view_details is False:
            return False
        return self.can_view_details

    async def check_can_edit(self, request: Request, model: Any) -> bool:
        """
        You can add a custom model attribute checker before edit.
        """
        if model.can_edit is False:
            return False
        return self.can_edit

    async def check_can_delete(self, request: Request, model: Any) -> bool:
        """
        You can add a custom model attribute checker before delete.
        """
        if model.can_delete is False:
            return False
        return self.can_delete

The result is in the admin panel:

Important issues

1. Seamless migration from older versions is provided, even customized Admin classes should not break.