TypeError: The view function for ' ' did not return a valid response. The function either returned None or ended without a return statement [duplicate] - flask

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Flask view return error "View function did not return a response"
(3 answers)
Closed 12 days ago.
I am trying to learn flask API with basic user CRUD operations on mysql database. My fetch all users is working perfect. But with same DB creating user is giving TypeError
This is my create user endpoint. For db connection I am using flask-mysqldb
#app.route('/create', methods=['POST'])
def create_user():
try:
if not request.is_json:
return jsonify({"message": "Bad Request: Request body must be JSON ☠️ "}), 400
else:
data = request.get_json()
fname = data.get('first_name')
lname = data.get('last_name')
gender = data.get('gender')
email = data.get('email')
phone = data.get('phone')
country_code = data.get('country_code')
if fname and lname and email and gender and phone and country_code:
conn = mysql.connect()
cur = conn.cursor()
cur.execute("""INSERT INTO users (fname, lname, gender, email, phone_number, phone_country_code) VALUES (%s,%s,%c,%s,%s,%s) """.format(fname, lname, gender, email, phone_number, country_code))
conn.commit()
cur.close()
conn.close()
return jsonify({"message": "User created successfully 🥳 " }), 200
else:
return jsonify({"message": "Some data is missing 🙁 "}), 200
except Exception as e:
print(e)
I am getting JSON data inside if statement which is am passing through postman
{
"first_name" : "John",
"last_name" : "Doe",
"gender" : "M",
"email" : "john#fakedoe.com",
"phone" : "9876543210",
"country_code" : "UK"
}
Thanks in advance

Answer 1

on debug, I found the issue was with sql query. We could solve this TypeError issue by simply changing SQL query format.
cur.execute("""INSERT INTO users ( fname, lname, gender, email, phone_number, phone_country_code)
VALUES (%s, %s,%s,%s,%s,%s)""", (fname, lname, gender, email, phone, country_code))
conn.commit()
Hope this help whoever came across this issue.