[英]Codeigniter Validation Not Working When Uploading Multiple Images Using Single Input
I am trying to upload multiple images in codeigniter using single input its working fine but i also want to add codeigniter validation on this input field but it not works. 我正在尝试使用单个输入在codeigniter中上载多个图像,但其效果还不错,但我也想在此输入字段上添加codeigniter验证,但它不起作用。 Here's my html code,
这是我的html代码,
<input type="file" name="images[]" id="file" multiple="">
And Here's my codeigniter Code, 这是我的代码点火器代码,
if (empty($_FILES['images']['name']))
{
$this->form_validation->set_rules('images', 'Item Image', 'required');
}
Can anyone please tell me why this validation not working when i try to change images name to images[] in codeigniter then this will always says image is required rather the image is selected. 谁能告诉我为什么当我尝试在codeigniter中将图像名称更改为images []时,此验证不起作用,那么这总是表示需要图像而不是选择了图像。
Try to apply validation on the count of $_FILES['images']['name']
. 尝试对
$_FILES['images']['name']
的计数应用验证。
if (count($_FILES['images']['name']) < 1)
{
$this->form_validation->set_rules('images', 'Item Image', 'required');
}
Try this code 试试这个代码
if (count($_FILES['images']['name']) == 0)
{
$this->form_validation->set_rules('images', 'Item Image', 'required');
}
Your input name is name="images[]" So try this one... 您的输入名称为name =“ images []”,因此请尝试此操作...
$this->form_validation->set_rules('images[]', 'Item Image', 'required');
So you can call form validation when you have no files on POST. 因此,当您在POST上没有文件时,可以调用表单验证。
if(count($_FILES['images']['name']) < 1) {
$this->form_validation->set_rules('images[]', 'Item Image', 'required');
}else {
// upload files
}
Create the validation function yourself using callback: 使用回调自己创建验证函数:
public function index()
{
$this->load->helper('file');
$this->load->library('form_validation');
if($this->input->post('submit'))
{
$this->form_validation->set_rules('file', '', 'callback_file_check');
if($this->form_validation->run() == TRUE)
{
// Upload
}
}
$this->load->view('upload');
}
public function file_check($str)
{
$allowed_mime_type_arr = array('image/gif','image/jpeg','image/png');
$mime = get_mime_by_extension($_FILES['file']['name']);
if(isset($_FILES['file']['name']) && $_FILES['file']['name']!="")
{
if(in_array($mime, $allowed_mime_type_arr))
{
return TRUE;
}
else
{
$this->form_validation->set_message('file_check', 'Please select only gif/jpg/png file.');
return FALSE;
}
}
else
{
$this->form_validation->set_message('file_check', 'Please choose a file to upload.');
return FALSE;
}
}
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