1/ I have to use a mixture of Plumsail Datatable and a custom sitepage made with custom spfx.
I would use a Plumsail Datatable but when clicking in edit of an item, instead of opening the default formulary of the ítem, let's say, "purchases", it must go to a URL of type /SitePages/Purchase.aspx?idItem=20.
2/ The same for New ítem
Dear @Miguel,
Are we talking about List or Library control? You should be able to modify Edit and New buttons to open different page in dialogue, however it might break some of the control's functionality, like automatic Parent/Child lookup connection. Here's how to modify New and Edit buttons' functionality - Work with buttons on the toolbar of a List or Library — SharePoint forms
It's for the list grid / datatable. The link you provide is very interesting, but there, they don't explain how to change the behaviour of the edit row, or the new button.
If I edit or press new button, I would like to redirect to a custom sitepage of my own, that does not use Plumsail.
Thx.