codeigniter passing data from view to controller using javascript

Question

i want to pass more than two value from view to controller using javascript based on dropdown value! here are my codes

<select name="class" id="class">
   <option selected value='-1'>--Select class--</option>
   <?php foreach($classes as $class){ 
      echo '<option value="'.$class['class_id'].'">'.$class['class_name'].'</option>'; }
      ?>
</select>
<select name="subject" id="subject">
   <option selected value='-1'>--Select Subject--</option>
   <?php 
      foreach($subjects as $subject) {                       
        echo '<option value="'.$subject['subject_id'].'">'.$subject['subject_name'].'</option>';
      }
      ?>
</select>
<script type="text/javascript">
   $(document).on("change","#class",function(e){
   e.preventDefault();
   var classid = $(this).val(); 
   $.post('<?php echo  site_url("system_ctrl/select_student"); ?>',{"class_id":classid},function(responce){
   $("#names").html(responce);
   });
</script>

i want to send value of id subject together with value of id class to the controller when value of class changes using javascript shown above.

you can pass N number of values like this {"class_id":classid,"subject":subject_id } — JYoThI
– JYoThI, Commented Feb 8, 2017 at 10:39

Vinod VT · Accepted Answer · 2017-02-08 10:34:55Z

1

You can pass any number of values like this,

$.post('<?php echo  site_url("system_ctrl/select_student"); ?>',{"class_id":classid, "subject":$('#subject').val()},function(responce){
    $("#names").html(responce);
});

answered Feb 8, 2017 at 10:34

Vinod VT

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Comments

Azad khan · Accepted Answer · 2017-02-08 10:45:44Z

0

$(document).on("change","#class",function(e){ e.preventDefault(); var classid = $(this).val(); $.post('',{"class_id":classid,"subject":$('#subject').val()},function(responce){ $("#names").html(responce); }); $(document).on("change","#subject",function(e){ e.preventDefault(); var subjectid= $(this).val(); $.post('',{"subject_id":subjectid,"class":$('#class').val()},function(responce){ $("#names").html(responce); });

answered Feb 8, 2017 at 10:45

Azad khan

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2 Comments

Claudius Massery Over a year ago

may you arrange in a proper way please!

Azad khan Over a year ago

its not allowing me to arrange it. i dont know why. but your have to do make that javascript for the both of the select field. so that if you select subject directly. then it will work also and get the upper class data also

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