Codeigniter: jquery not passing its 'load' value to the controller

Question

The issue is what I say in the title. The parameter of the index selected in the first dropdown box is not sent to the controller. Therefore the controller cannot pass any value to the model etc. If I harcode saying $pais_id = 1 and send that to the Model it works, so this means, the issue is in the controller not getting it from the jquery. VIEW

<script type="text/javascript">
//jquery code for source list
$(document).ready(function(){
$('#country').change(function() {
  if ($(this).val()!='') {
    $("#source").load("/CI-3/controllers/control_form.php",{pais_id: $(this).val()});
      }

    });

});  // end of country and city function
</script>

The problem must be there because I don't visualize the process: Jquery detects the changing in the select dropdown list and fetches the selected id. Alright, but what happens next ? it sends it to the controller, yes, and? the controller forwards it to the model, the model does a sql search and returns an array back to the controller and the controller forwards it to the view, but, how does #source in the line above get affected after all that?, so it will not modify itself

Use the form_dropdown() function instead.

Robin Castlin
– Robin Castlin

2012-08-12 20:28:57 +00:00
Commented Aug 12, 2012 at 20:28 — Robin Castlin
– Robin Castlin, Commented Aug 12, 2012 at 20:28

Robin Castlin · Accepted Answer · 2012-08-12 22:18:41Z

1

$source['source'] = $this->model_form->get_source($pais_id);

should be

$data['source'] = $this->model_form->get_source($pais_id);

in controller. third parameter in view is if it's returned or echo'd. all values are passed in the 2nd parameter as an array.

answered Aug 12, 2012 at 22:18

Robin Castlin

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4 Comments

iaintunderstand Over a year ago

thank you, we may be getting closer. yet, note that a few lines above, I already write that I am getting an empty value for $pais_id. $pais_id = $this->input->post('pais_id', TRUE); # echo "the value is es $pais_id"; (I get emptyness

iaintunderstand Over a year ago

I made an experiment. In the model, if I replace the parameter $pais_id by 1, then all works well. The second select list gets correctly populated. Thus=>all it is needed is that the Model does get that value from $pais_id, not that I hardcode it.

Robin Castlin Over a year ago

I suggest you learn to troubleshoot this issues. Everything from print_r() in php to console.log() in javascript can help you find what happends to your values. Be a bit creative and just check through the entire code where the values might be missing. If you do it, you're bound to find where the problem lies.

iaintunderstand Over a year ago

I am doing chest acrobatics with this as I am introducing all kinds of tricks and debugs in order to pin point where the issue is and that is how I have managed to reduce the three modules to this piece of snippet, I have also included call back function in the jquery script to see if anything has been loaded, I do a lot of var_dump and echo and that is how I learned that the value is NOT being passed from the jquery to the controller because it is a false boolean claimed on. etc etc and etc

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