Not getting resulting value in textbox

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Hello,

This is my input text box:

HTML

<input type="text" name="grade_id[<?php echo $obj->student_id; ?>]"  id="grade_id_<?php echo $obj->student_id; ?>" class="form-control col-md-7 col-xs-6" />

I am not getting the value return by ajax jquery.

Please help, the get_grade_by_makrs function return value as A,B etc.

What I have tried:

JavaScript

var ob_marks = $('#obtain_total_mark_'+student_id).val();
         $.ajax({
           type   : "POST",
           url    : "<?php echo site_url('ajax/get_grade_by_marks'); ?>",
           data   : { ob_marks : ob_marks },
           success: function(data){
           $('#grade_id_'+student_id).val(data);
           }
       });

Posted 17-Feb-21 6:58am

nyt1972

Updated 18-Feb-21 1:50am

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Comments

20212a 17-Feb-21 15:04pm

Debug it and make sure your success function is getting hit and make sure that student_id in your success function is what you expect it to be. I don't see you declare student_id anywhere.

nyt1972 17-Feb-21 23:20pm

Thanks for the reply, if I change the code $('#grade_id_'+student_id).val(data);
to $('#grade_id_'+student_id).val("Test"); it works, which means that data is not getting the value.

Richard Deeming 18-Feb-21 4:02am

So debug your PHP code. We can't see your code, and we can't access your database, so we have no way of telling you why your code isn't returning the expected value.

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nyt1972 · Accepted Answer · 2021-02-18T01:50:00

This is my controller's function Code:

PHP

public function get_grade_by_marks()
    {
        $obmarks = $this->input->post('ob_marks');
        $result=$this->ajax->get_grade_by_marks($obmarks);
        $name = $result->name;
        return $name;       
    }

Changing return with echo solved the issue.

And below is my Model's Function code

PHP

public function get_grade_by_marks($obmarks)
    {
        
       $this->db->select('name');
        $this->db->from('grades');
       // $this->db->where(array($obmarks => 'between mark_from','mark_to'));
      $this->db->where("$obmarks BETWEEN mark_from AND mark_to");
        return $this->db->get()->row();
    }

When I debug it, it return "B" or "A"