You want to validate a request so that the phone field is optional but if present must be numeric and exactly 10 digits. Which validation rule is correct?

hard📝 Conceptual Q8 of 15

Laravel - Request and Response

You want to validate a request so that the phone field is optional but if present must be numeric and exactly 10 digits. Which validation rule is correct?

A'phone' => 'sometimes|string|min:10'

B'phone' => 'required|numeric|digits:10'

C'phone' => 'nullable|numeric|digits:10'

D'phone' => 'optional|digits_between:10,10'

Step-by-Step Solution

Solution:

Step 1: Identify optional field rule
'nullable' allows the field to be missing or null but validates if present.
Step 2: Check numeric and length rules
'numeric' ensures only numbers, 'digits:10' requires exactly 10 digits.
Final Answer:
'phone' => 'nullable|numeric|digits:10' -> Option C
Quick Check:
Optional numeric 10 digits = 'nullable|numeric|digits:10' [OK]

Quick Trick: Use 'nullable' for optional fields [OK]

Common Mistakes:

Using 'required' instead of 'nullable'
Confusing 'sometimes' with 'optional'
Using 'digits_between' incorrectly

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More Laravel Quizzes

You want to validate a request so that the phone field is optional but if present must be numeric and exactly 10 digits. Which validation rule is correct?

Step 1: Identify optional field rule

Step 2: Check numeric and length rules

Final Answer:

Quick Check:

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