chore: add heroku compatibility (whitenoise, dj-database-url)

config/settings.py

@@ -1,5 +1,6 @@
 import os
 import sys
+import dj_database_url
 from pathlib import Path
 from django.utils.translation import gettext_lazy as _
 
@@ -21,6 +22,7 @@ CSRF_TRUSTED_ORIGINS = [
     'https://*.flatlogic.app',
     'https://*.flatlogic.run',
     'https://*.flatlogic.com',
+    'https://*.herokuapp.com',
     'http://localhost:8000',
     'http://127.0.0.1:8000',
 ]
@@ -41,6 +43,7 @@ INSTALLED_APPS = [
 
 MIDDLEWARE = [
     'django.middleware.security.SecurityMiddleware',
+    'whitenoise.middleware.WhiteNoiseMiddleware',
     'django.contrib.sessions.middleware.SessionMiddleware',
     'django.middleware.locale.LocaleMiddleware',
     'django.middleware.common.CommonMiddleware',
@@ -87,6 +90,11 @@ DATABASES = {
     }
 }
 
+# Use DATABASE_URL if it is set (standard for Heroku)
+db_from_env = dj_database_url.config(conn_max_age=600)
+if db_from_env:
+    DATABASES['default'].update(db_from_env)
+
 
 # Password validation
 # https://docs.djangoproject.com/en/5.0/ref/settings/#auth-password-validators
@@ -139,6 +147,13 @@ STATICFILES_DIRS = [
     BASE_DIR / "assets",
 ]
 
+# Whitenoise storage for compressed and cached static files
+STORAGES = {
+    "staticfiles": {
+        "BACKEND": "whitenoise.storage.CompressedManifestStaticFilesStorage",
+    },
+}
+
 # Conditionally add node_modules if it exists (prevents W004 warning)
 if (BASE_DIR / 'node_modules').exists():
     STATICFILES_DIRS.append(BASE_DIR / 'node_modules')

requirements.txt

@@ -5,3 +5,5 @@ gunicorn==21.2.0
 requests
 openpyxl
 WeasyPrint
+dj-database-url
+whitenoise