Empty `rate` Field Prompts Irrelevant Command Exception

[e1121208]

Description

The r/ field should not be empty is not alerted to the user.

---

Steps to Reproduce

1. Attempt adding a user with the r/ field empty.
2. Observe that the result display returned does not address the issue.

Expected Behavior

Users should be prompted of the empty rate field when inputting an empty r/.

Actual Behavior

However, the result display only reminds user that the decimal place should be at most two and within the price range specified by the program.

Additional Information

Input:
add n/John Doe p/98765432 e/johnd@example.com a/311, Clementi Ave 2, #02-25 t/Sunday-1000-1200 s/Mathematics r/ paid/6000 owed/3000
Output:

---

Suggested Improvement

Consider throwing another command exception in the case of that field being empty.

[soc-se-bot]

Team's Response

Thank you for your input. We felt that this is of a lower priority than what we have done in v1.6.

We felt that our help message is quite specific to tell user what is an acceptable input for our r/ field.
When we think in the user's perspective, upon seeing the message Rate should ...
and
1. at most 2 decimal places
and
2. is between the range of ...

We felt that the user should be able to understand quite clearly that the input should not be blank.

We thought about a new user that does not know any constraints about this application, and when the user types in
add n/John Doe p/98765432 e/johnd@example.com a/311, Clementi Ave 2, #02-25 t/Sunday-1000-1200 s/Mathematics r/ paid/6000 owed/3000, we feel that between these two options:

1. be reminded with r/ should not be empty which has no other information about the actual constraints of RATE, OR
2. be reminded with our current error message, which tells you exactly how you should enter the RATE

The user might prefer the 2nd option more, as it tells the user more information.

Of course, your suggestion is valuable to our team in terms of improving the user experience for UGTeach, and we will consider improving this in the future iteration, by telling user that it should not be empty.

Items for the Tester to Verify

❓ Issue response

Team chose [response.NotInScope]

• I disagree

Reason for disagreement: [replace this with your explanation]

---