BUGFIX: Database error when saving editable complaint fields
PROBLEM: After adding X-Requested-With header, the request reached
the controller but threw 'Database error' when trying to update the
complaint field.
ROOT CAUSE: The ipd_discharge_complaint table does not have an
'updated_at' column. The update query was trying to set:
- comp_report or comp_remark (correct)
- updated_at (does not exist) ← DATABASE ERROR
INVESTIGATION: Checked how complaint rows are inserted elsewhere in
the codebase (line 4117-4130). The table has 'update_by' column for
tracking changes, not 'updated_at'.
SOLUTION:
1. Removed hardcoded 'updated_at' => date(...) from update data
2. Only update the target field (comp_report or comp_remark)
3. Conditionally set 'update_by' if column exists (audit trail)
4. Use session full_name for user tracking
Now editable complaint fields save successfully without database errors.
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