little update

admin.py

@@ -5,8 +5,8 @@ from dotenv import load_dotenv
 load_dotenv()
 
 
-USERNAME = os.getenv("_USERNAME_")
-PASSWORD = os.getenv("_PASSWORD_")
+USERNAME = os.getenv("USERNAME_")
+PASSWORD = os.getenv("PASSWORD_")
 
 def admin():
 

mongodb.py

@@ -5,9 +5,7 @@ import os
 from dotenv import load_dotenv
 load_dotenv()
 
-DB_Username = os.getenv("_DATABASE_USERNAME_")
-DB_Password = os.getenv("_DATABASE_PASSWORD_")
-uri = f"mongodb+srv://{DB_Username}:{DB_Password}@cluster0.ugb5cse.mongodb.net/?retryWrites=true&w=majority&appName=Cluster0"
+uri = os.getenv('DATABASE_URL_')
 client = MongoClient(uri)
 db = client["blog_db"]  # Create a database called blog_db
 collection = db["posts"]  # Create a collection called posts