Tag: postgis

How to add PostGIS SQL SELECT query as layer to QGIS 3 project using Python console?

I want to add a PostGIS SELECT query as a new layer to a QGIS 3 project using the Python console. It is a simple process to do this using the SQL Window in the DB Manager of QGIS. Here you can create a layer from any SQL query of a PostGIS enabled PostgreSQL database. The following works for adding

django error on migration: “There is no unique constraint matching given keys for referenced table

django postgis python

So I have seen that a lot of these kinds of questions have popped up (few answered) and none in a Django aspect that I saw. I am confused why I am getting the error, I am guessing i am missing something on my field decorator or what not in my model definition. Here are the two models… (one abbreviated).