Submission of new column failed

Question

When adding a column, the addition failed,

if($cate->add()){

                                                                                                                                 ('lst'));

        }else{

                $this->error('Failed to add column');

          }

Go The error is

. Is it because the interface address of the form form is written wrong? I didn’t see the interface address of the form form written by the teacher

Answer 1

If the form is written incorrectly, it cannot be entered into PHP at all. This should be an error reported during add(). Use fetchSqlA() to check if there is a data problem