creating dynamic navigation sub menu select from database using Codeigniter? - ajax

Question

I am trying to create a menu with submenu in codeigniter using ajax I successfully created the menu but i am facing the problem while i will create a submenu. When i click the menu I check it in cosole.log its showing controller is get the details but after that i dont know why its not working. Pls any one solve this issue. thanks in advance
This is My View Area
<form action="" method="post" id="frm_submenu">
<div class="form-group">
<label for="menu">Select Menu</label>
<select class="form-control" id="selectmenuid">
<option value="">-- Select Menu --</option>
<?php foreach($showData as $show):?>
<option value="<?php echo $show->menu_id?>"><?php echo $show->menu_name?></option>
<?php endforeach;?>
</select>
</div>
<div class="form-group">
<label for="menu">Select Sub Menu</label>
<select class="form-control" id="selectsubmenu">
<option value="">-- Select Submenu Menu --</option>
</select>
</div>
<div class="form-group">
<label for="imagetitle">Image Title</label>
<input type="text" class="form-control" name="imagetitle" id="imagetitle" placeholder="Enter Image Title" required="required">
</div>
<div class="form-group">
<label class="btn btn-default btn-file">
Browse <input type="file" style="display: none;">
</label>
</div>
<button type="submit" class="btn btn-primary" id="submit">Submit</button>
</form>
This is my ajax area
$("#selectmenuid").change(function() {
var selectmenuid = $(this).val();
console.log(selectmenuid);
$.ajax({
type: "POST",
data: selectmenuid,
url: "<?= base_url() ?>Admin_Creator/SelectSubmenudropdown",
success: function(data) {
$.each(data, function(i, data) {
$('#selectsubmenu').append("<option value='" + data.submenu_id + "'>" + data.submenu_name + "</option>");
});
}
});
});
This is my Controller area
public function SelectSubmenudropdown()
{
if(isset($_POST['selectmenuid']))
{
$this->output->set_content_type("application/json")->set_output(json_encode($this->Model_Creator->getSubmenu($_POST['selectmenuid'])));
}
}
This is my Model area
public function getSubmenu(){
$this->db->select('submenu_id,submenu_name');
$this->db->from('menu,submenu');
$this->db->where('submenu.menu_id=menu.menu_id');
$this->db->where('submenu.menu_id', $selectmenuid);
return $query->result_array();
}

Answer 1

You have to receive $selectmenuid in your model method:
public function getSubmenu($selectmenuid){
$this->db->select('submenu_id,submenu_name');
$this->db->from('menu,submenu');
$this->db->where('submenu.menu_id=menu.menu_id');
$this->db->where('submenu.menu_id', $selectmenuid);
return $query->result_array();
}