Unable to get value of submit button in PHP - php

Question

I need some help getting the value of a submit button. The code below fires off my controller function, but I am unable to get the value of the 'Invite' button. var_dump states 'bool(false)' and a 0 for Educator_Id is inserted into my final query to the database.
Thanks for any help you can give!
My submit button:
<?php foreach($educators as $educator): ?>
<button type="submit" id="Invite" name="Invite" value="<?php echo $educator->Educator_Id; ?>">Invite</button>
<?php endforeach; ?>
My jQuery function:
$("#Invite").click(function() {
var form_data = $('#validation-form').serialize();
$.ajax({
url: "<?php echo site_url('schedule/send_invite'); ?>",
type: 'POST',
data: form_data
});
return false;
})
My controller:
function send_invite() {
$email = $this->input->post('Educator_Email');
$Opportunity_Id = $this->input->post('Opportunity_Id');
$Educator_Id = $this->input->post('Invite');
$Class_Numbers = $this->input->post('Class_Numbers');
foreach($Class_Numbers as $Class_Number):
$this->ion_auth_model->update_class_educator($Opportunity_Id, $Class_Number, $Educator_Id);
endforeach;
}
My model:
function update_class_educator($Opportunity_Id, $Educator_Class, $Educator_Id) {
$Class = array(
'Educator_Id' => $Educator_Id
);
$this->db->where('Opportunity_Id', $Opportunity_Id);
$this->db->where('Class_Number', $Educator_Class);
$this->db->update('Classes', $Class);
}

Answer 1

Try to passing the value to a hidden input
JavaScript:
$("#Invite").live("click", function(){
var this_value = $(this).val();
$("input[name='InviteValue']").val(this_value);
});

Answer 2

Try this for the PHP:
<?php
foreach($educators as $educator){
echo "<input type='checkbox' name='invite[]' value='".$educator->Educator_Id."'>".$educator."<br/>";
}
echo "<input type='submit' value="Invite"/>";
It will render a checkbox for each educator and a SINGLE submit button. Then, in your JS:
$("#invite").click(function() {
var form_data = $('#validation-form').serialize();
$.ajax({
url: "<?php echo site_url('schedule/send_invite'); ?>",
type: 'POST',
data: form_data,
success: function(){
// Do something here if succeded
}
});
return false;
});
This way it only sends checked checkboxes to the server, so you can handle who is selected in your controller from there.
$Educator_Id = $this->input->post("invite[]");
instead of
$Educator_Id = $this->input->post('Invite');
I think that should work... Your final goal is a little unclear to me, but your logic is what's off in this case, and this should help clear things up.
Cheers!

Answer 3

Instead of using button use input like this :
<?php
$count = 0;
foreach($educators as $educator): ?>
<input type="submit" id="Invite_$count" class="invite" name="Invite" data-value="<?php echo $educator->Educator_Id; ?>" value="Invite"/>
<?php
$count++;
endforeach; ?>
And in jquery you can use :
$(".invite").click(function() {
var submit_data = $(this).data('value');
var form_data = $('#validation-form').serialize();
$.ajax({
url: "<?php echo site_url('schedule/send_invite'); ?>",
type: 'POST',
data: form_data + "&submit_data=" + submit_data
});
return false;
})
In Controller:
function send_invite() {
$email = $this->input->post('Educator_Email');
$Opportunity_Id = $this->input->post('Opportunity_Id');
$Educator_Id = $this->input->post('submit_data');
$Class_Numbers = $this->input->post('Class_Numbers');
foreach($Class_Numbers as $Class_Number):
$this->ion_auth_model->update_class_educator($Opportunity_Id, $Class_Number, $Educator_Id);
endforeach;
}
Try it. This might solve your problem.