将变量发送到控制器并使用codeigniter将其恢复查看

this is my first time to use codeigniter to make a web site. My problem is as follow:

My view file contains:

<label class="control-label ">Insert Number of photos : </label>
<?php echo form_open('project_controller/no_of_pics'); ?>
<input name="no_pics" placeholder="Insert a number" type="text" value="<?php echo set_value('no_pics'); ?>" >
<input type='submit' name='submit' value='Insert' /> 
<?php echo form_close() ?>
<?php  $no_pic=''; ?>
<?php echo $no_pic; ?>
<br><br>`

My controller file contains:

public function no_of_pics(){

      $this->load->view('control_panel');
      $number=$this->input->post('no_pics');
      $hoho = array('no_pic' =>  $number  );
      $this->load->view('control_panel',$hoho);

 }

and I wrote that line the .htaccess file:

$route['project_controller/no_of_pics'] = "/project_controller/no_of_pics";

my problem is that I can't get the no_pics back to the view, it is supposed to check the number through validation rules in the controller but I want firstly to get the number back to the view file

when I wrote the code above I get the number back but in a plain page of the view file without any styling and in the top the number I inserted in the input form not even where I want to use.

3-01-2015 I think I knew what the problem is, but I still don't know how to fix it . I have an other method in that controller "project_controller" is:

 public function project($page = 'home'){ 
    if ( ! file_exists ('application/views/'.$page.'.php')){ 
       show_404();
     } 
 $this->load->view($page);
 }

and I wrote in the route.php file:

$route['(:any)'] = 'project_controller/project/$1'; 

so I think the problem is "function no_of_pics()" can not view the page properly when sending a variable to it as function project() is responsible for that , so what is the solution now?

You must supply the field name via the first parameter of the function. The second (optional) parameter allows you to set a value for the form.check here

set_value('no_pics',$no_pic);

You need to remove this line from view file

<?php  $no_pic=''; ?>

It reset the variable that passes from the controller.

You can try this technique

  $hoho['no_pic'] =$number;
  $this->load->view('control_panel',$hoho);

I think then you find it on view page.