Improve look of SQL explorer page, and improve validation of exercise selection in workouts

routes/workout.py

@@ -226,6 +226,16 @@ def create_topset(person_id, workout_id):
     exercise_id = request.form.get("exercise_id")
     repetitions = request.form.get("repetitions")
     weight = request.form.get("weight")
+
+    # Validation: Ensure exercise_id is present and is a valid integer
+    if not exercise_id or not exercise_id.strip():
+        return "Please select an exercise.", 400
+
+    try:
+        exercise_id = int(exercise_id)
+    except ValueError:
+        return "Invalid exercise selection.", 400
+
     new_topset_id = db.create_topset(workout_id, exercise_id, repetitions, weight)
     exercise = db.get_exercise(exercise_id)
     db.activityRequest.log(current_user.id, 'ADD_SET', 'topset', new_topset_id, f"Added set: {repetitions} x {weight}kg {exercise['name']} in workout {workout_id}")