Instead of always having to include the button to open the modal, create the modal and all its contents, you can dynamically create the modal and load the route of the content you want to open in a very simple way. This allows you to still display the ever updated data without much effort in editing cases.

One file for all routes is bad idea. For simplify this, look this snippets.

If your need run TDD on SQLite (this perfect performance if run on memory) and your migrations have most alter tables, probably you have a problems.

If your need usage DataTable with default configurations for many pages, do you can create your 'setter' for default table elements.