How to redirect URL in CodeIgniter after form submission back to the previous page only when the user comes from that page?

debugcn Published at Dev

Anish Sana

I've tried several ways to redirect the URL back to the page where the user came from after submitting a form or just refresh the form page to allow the user to make a new entry if the user came directly to it. So far, I've been unsuccessful. The following method is the closest I've got but I'm not sure what's going wrong -

The user clicks this link which takes them to the page where the form is -

<a target="_blank" class="sampleredirect" href="<?php echo base_url();?>sample/controller/add">Add User</a>

Upon clicking, the following jQuery script links the click to a function -

<script>
$('#sampleredirect').click(function(){
   $.ajax({
      type: "POST",
      url: "sample/controller/redfunc",
   }).done(function( msg ) {
      alert( "Data Saved: " + msg );
   });
});
</script>

The function gets the URL where the click was initiated -

public function redfunc(){
        $referred_from = $this->session->set_userdata('referred_from',current_url());
        return $referred_from;
    }

Inside sample/controller/add where the form logic is located, after the submission, I'm calling the function to redirect the user back to the previous URL -

public function adduser(){
   //sample code
   $this->redfunc();
   redirect($referred_from, 'refresh');
}

This isn't working and I keep getting redirected to the default page that shows up if a URL can't be found. When I do vardump($referred_from) after calling the function $this->redfunc();, I'm getting NULL.

I'm kinda lost here and would love some help with this. Thanks!

Vinie

$referred_from will return nothing. It is just setting a session. It will not return session value. Try below code

<script>
$('#sampleredirect').click(function(){
   $.ajax({
      type: "POST",
      url: "sample/controller/redfunc",
      data: {current_url:<?=current_url()?>}
   }).done(function( msg ) {
       alert( "Data Saved: " + msg );
   });
});

public function redfunc(){
    $this->session->set_userdata('referred_from',$this->input->post('current_url');
}

public function adduser(){
   //sample code
   $referred_from = $this->session->referred_from;
   redirect($referred_from, 'refresh');
}

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edited at2021-07-18

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