https://kdpisda.in/tag/permissions/Recent content in Permissions on Kuldeep PisdaHugoen-usSat, 14 Mar 2026 10:00:00 +0530https://kdpisda.in/erp-dynamic-permissions-with-django-groups/Sat, 14 Mar 2026 10:00:00 +0530https://kdpisda.in/erp-dynamic-permissions-with-django-groups/<p>The Ambarsthan booking engine from the last chapter put its foot down in exactly one place on purpose: the correctness of two people grabbing the same slot lives in the database — row locks, an exclusion constraint, the right isolation level — not in hopeful application code. Same Django backend, a very different neighbour app riding on it, and this time the hard part is not concurrency. It is change.</p>