alla-tms/plans/training-type-review.md

Investigate the "ประเภทการอบรม" dropdown validation.

Current issue: The form displays:

"Invalid input: expected string, received undefined"

instead of a friendly Thai validation message.

Tasks:

1. Review the React Hook Form configuration.
2. Review the Zod schema.
3. Review the Select component.
4. Ensure the field is correctly registered.
5. Ensure the Select binds:
   • value
   • onValueChange
6. Ensure defaultValues contains a valid default or empty string.
7. Replace raw Zod error messages with Thai validation messages.

Training Type options should be:

• INTERNAL Label: อบรมภายใน (Internal Training)

• EXTERNAL Label: อบรมภายนอก (Public Training)

• ONLINE Label: e-Learning / Online Course

• OJT Label: On the Job Training (OJT)

Validation message:

กรุณาเลือกประเภทการอบรม

Verify:

• Create mode
• Edit mode
• Reset form
• Validation after submit

Return:

• Root cause
• Files changed
• Fixed code
• Regression checklist