Codeigniter: Image Upload

问题

I have a large form, and I just added an file input to allow users to upload an image.

Here's the new HTML:

<input type="file" name="file_1" />
<input type="text" name="image_description_1" class="text-input"/>

Here's the new _submit function:

if($this->CI->input->post('file_1')){
    $config['overwrite'] = TRUE;
    $config['allowed_types'] = 'jpg|jpeg|gif|png';
    $config['max_size'] = 2000;
    $config['upload_path'] = realpath(APPPATH . '../assets/uploads/avatars');

    $this->CI->load->library('upload', $config);
    $this->CI->upload->do_upload();

    $image_data = $this->CI->upload->data();

    $image['description'] = $this->CI->input->post('image_description_1');
    $image['user_id'] = $id;
    $image['image'] = $image_data['file_name'];

    $this->CI->db->insert('report_images',$image);

}

The description and user_id are correctly getting submitted, but the file is lost.

Should I be doing something different? Not really sure what's going wrong.

回答1:

First of all don't get the do_upload() for granted, you have to validate the upload:

if ( ! $this->upload->do_upload('file_1'))
{
    // something went wrong, display errors
}   
else
{
    // everything is fine
}

Also, most likely it's your upload_path, check the document I linked to:

//You'll need a destination folder for your uploaded images. Create a folder at the root of your CodeIgniter installation called uploads and set its file permissions to 777.  
$config['upload_path'] = './uploads/';

So you may need to change your setting to something like:

$config['upload_path'] = './assets/uploads/avatars/';

回答2:

codeigniter expects your file input to be named userfile, unless you specify in your code like this,

$field_name = "some_field_name";
$this->upload->do_upload($field_name)

回答3:

I am not sure what the problem is. But May be the below links could help you.

Upload file bug in codeigniter

Also you can initialize the config to set preferences.

$this->upload->initialize($config);

File Uploading class in codeigniter

回答4:

Make sure the name of the input file is set to "userfile" because the upload function expects the files coming from an input field whose name is set to "userfile"

来源：https://stackoverflow.com/questions/4684612/codeigniter-image-upload

标签

codeigniter

upload