CodeIgniter文件上传 - Fat模型皮肤控制器

Question

I'd like to ask a question please.

I have inside my model a method that holds both file uploading and image manipulation. The code works fine, but the only problem is I can't figure out how to get the upload error back in the controller in order to pass it to the view and display it to the user.

This is the code in my model:

class Foo_Model extends CI_Model
{

    public function do_upload(){
        $id = intval($this->input->post('id'));
        $config = array(
            'upload_path' => './uploads/files/',
            'allowed_types' =>  'gif|jpg|png',
            'max_size'      =>  '2048',
            'max_width'     =>  '800',
            'max_heigth'    =>  '300',
            'overwrite'     =>  true,
            'file_name'     =>  'file_'.$id, // e.g. file_10.jpg
        );
        $this->load->library('upload', $config);

        if ( ! $this->upload->do_upload('file') ) {

            return $this->upload->display_errors();
        } else {
            // file uploaded successfully
            // now lets create some thumbs
            $upload_file = $this->upload->data();
            if ($upload_file['is_image']) {
                $config['image_library'] = 'gd2';
                $config['source_image'] = $upload_file['file_name'];
                $config['create_thumb'] = TRUE;
                $config['maintain_ratio'] = TRUE;
                $config['width'] = 75;
                $config['height'] = 50;

                $this->load->library('image_lib', $config);

                $this->image_lib->resize();
            }

            // uploading and resizing was done
            return $upload_file;
            // return true;
        }
    }
}

Code in my controller

public function upload(){

    $this->foo_model->do_upload();
    // need to get the upload error (if any occured) or the upload data
    // how can I get them back from function of the model?

    $this->load->view('form_upload', $data);
}

Answer 1

You are return errors from Model method so hold returned data in variable and check that is error or file_data

public function upload(){

    $upload_data = $this->foo_model->do_upload();
    //upload data will be return in array format
    if(is_array($upload_data)){
      $data['upload_file_info'] = $upload_data
    }else{ /*error as string so if not array then always error*/
      $data['error']  = $upload_data;
    }

    $this->load->view('form_upload', $data);
}