php CodeIgniter - 文件上传需要验证
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CodeIgniter - File upload required validation
提问by Staysee
I have 2 text fields and 1 file upload that are all required. Everything works when I require just the text fields, but when I require the file upload the validation error stays saying that a file is required, even though I selected one. Anyone know what I am doing wrong? Many thanks in advance.
我有 2 个文本字段和 1 个文件上传，这些都是必需的。当我只需要文本字段时一切正常，但是当我需要文件上传时，即使我选择了一个文件，验证错误仍然说需要一个文件。有谁知道我做错了什么？提前谢谢了。
//view
//看法
<?php echo form_open_multipart('add'); ?>
<fieldset>
<input type="text" name="name" /><br>
<input type="text" name="code" /><br>
<input type="file" name="userfile" /><br><br>
<input type="submit"value="Add" />
</fieldset>
<?php echo form_close(); ?>
//controller
//控制器
public function add() {
$this->form_validation->set_rules('name', 'Name', 'required');
$this->form_validation->set_rules('code', 'Code', 'required');
//$this->form_validation->set_rules('userfile', 'Document', 'required');
//when the above line is active the upload does not go through
if ($this->form_validation->run() == FALSE) {
$data['page_view'] = $this->page_view;
$data['page_title'] = $this->page_title;
$this->load->view('template', $data);
}
else
{
$this->load->library('upload');
if (!empty($_FILES['userfile']['name']))
{
$config['upload_path'] = './uploads/';
$config['allowed_types'] = 'gif|jpg|png|jpeg';
$this->upload->initialize($config);
if ($this->upload->do_upload('userfile'))
{
$img = $this->upload->data();
$file_name = $img['file_name'];
$name = $this->input->post('name');
$code = $this->input->post('code');
$this->load->model('create', 'create_model');
$this->create_model->create_entry($name, $code, $file_name);
$data['page_view'] = $this->page_view;
$data['page_title'] = $this->page_title;
$this->load->view('template', $data);
}
else
{
echo $this->upload->display_errors();
}
}
}
}
回答by Staysee
I found a solution that works exactly how I want.
我找到了一个完全按照我想要的方式工作的解决方案。
I changed
我变了
$this->form_validation->set_rules('name', 'Name', 'trim|required');
$this->form_validation->set_rules('code', 'Code', 'trim|required');
$this->form_validation->set_rules('userfile', 'Document', 'required');
To
到
$this->form_validation->set_rules('name', 'Name', 'trim|required');
$this->form_validation->set_rules('code', 'Code', 'trim|required');
if (empty($_FILES['userfile']['name']))
{
$this->form_validation->set_rules('userfile', 'Document', 'required');
}
回答by Chirag Rafaliya
CodeIgniter file upload optionally ...works perfectly..... :)
CodeIgniter 文件上传可选...工作完美..... :)
---------- controller ---------
- - - - - 控制器 - - - - -
function file()
{
$this->load->view('includes/template', $data);
}
function valid_file()
{
$this->form_validation->set_rules('userfile', 'File', 'trim|xss_clean');
if ($this->form_validation->run()==FALSE)
{
$this->file();
}
else
{
$config['upload_path'] = './documents/';
$config['allowed_types'] = 'gif|jpg|png|docx|doc|txt|rtf';
$config['max_size'] = '1000';
$config['max_width'] = '1024';
$config['max_height'] = '768';
$this->load->library('upload', $config);
if ( !$this->upload->do_upload('userfile',FALSE))
{
$this->form_validation->set_message('checkdoc', $data['error'] = $this->upload->display_errors());
if($_FILES['userfile']['error'] != 4)
{
return false;
}
}
else
{
return true;
}
}
i just use this lines which makes it optionally,
我只是使用这行使其成为可选的，
if($_FILES['userfile']['error'] != 4)
{
return false;
}
$_FILES['userfile']['error'] != 4 is for file required to upload.
you can make it unnecessary by using $_FILES['userfile']['error'] != 4, then it will pass this error for file required and works great with other types of errors if any by using return false,
hope it works for u ....
您可以通过使用使其变得不必要$_FILES['userfile']['error'] != 4，然后它将通过此错误传递给所需的文件，并且通过使用return false可以很好地处理其他类型的错误，希望它对您有用....
回答by umefarooq
check this form validation extension library can help you to validate files, with current form validation when you validate upload field it treat as input filed where value is empty have look on this really good extension for form validation library
检查此表单验证扩展库可以帮助您验证文件，当您验证上传字段时，当前的表单验证将其视为输入字段，其中值为空 看看这个非常好的表单验证库扩展
回答by Nagaraju Musini
you can use call back function, like this
你可以使用回调函数，像这样
$this->form_validation->set_rules('userfile', 'Document', 'callback_file_selected_test');
if ($this->form_validation->run() == FALSE) {
//error
}
else{
// success
}
function file_selected_test(){
$this->form_validation->set_message('file_selected_test', 'Please select file.');
if (empty($_FILES['userfile']['name'])) {
return false;
}else{
return true;
}
}
回答by D.Dobchev
set a rule to check the file name (if the form is multipart)
$this->form_validation->set_rules('upload_file[name]', 'Upload file', 'required', 'No upload image :(');overwrite the
$_POSTarray as follows:$_POST['upload_file'] = $_FILES['upload_file']and then do:
$this->form_validation->run()
设置规则来检查文件名（如果表单是多部分的）
$this->form_validation->set_rules('upload_file[name]', 'Upload file', 'required', 'No upload image :(');覆盖
$_POST数组如下：$_POST['upload_file'] = $_FILES['upload_file']然后做：
$this->form_validation->run()
回答by ankit jain
you can solve it by overriding the Run function of CI_Form_Validation
您可以通过覆盖 CI_Form_Validation 的 Run 函数来解决它
copy this function in a class which extends CI_Form_Validation .
将此函数复制到扩展 CI_Form_Validation 的类中。
This function will override the parent class function . Here i added only a extra check which can handle file also
该函数将覆盖父类函数。在这里我只添加了一个额外的检查，它也可以处理文件
/**
* Run the Validator
*
* This function does all the work.
*
* @access public
* @return bool
*/
function run($group = '') {
// Do we even have any data to process? Mm?
if (count($_POST) == 0) {
return FALSE;
}
// Does the _field_data array containing the validation rules exist?
// If not, we look to see if they were assigned via a config file
if (count($this->_field_data) == 0) {
// No validation rules? We're done...
if (count($this->_config_rules) == 0) {
return FALSE;
}
// Is there a validation rule for the particular URI being accessed?
$uri = ($group == '') ? trim($this->CI->uri->ruri_string(), '/') : $group;
if ($uri != '' AND isset($this->_config_rules[$uri])) {
$this->set_rules($this->_config_rules[$uri]);
} else {
$this->set_rules($this->_config_rules);
}
// We're we able to set the rules correctly?
if (count($this->_field_data) == 0) {
log_message('debug', "Unable to find validation rules");
return FALSE;
}
}
// Load the language file containing error messages
$this->CI->lang->load('form_validation');
// Cycle through the rules for each field, match the
// corresponding $_POST or $_FILES item and test for errors
foreach ($this->_field_data as $field => $row) {
// Fetch the data from the corresponding $_POST or $_FILES array and cache it in the _field_data array.
// Depending on whether the field name is an array or a string will determine where we get it from.
if ($row['is_array'] == TRUE) {
if (isset($_FILES[$field])) {
$this->_field_data[$field]['postdata'] = $this->_reduce_array($_FILES, $row['keys']);
} else {
$this->_field_data[$field]['postdata'] = $this->_reduce_array($_POST, $row['keys']);
}
} else {
if (isset($_POST[$field]) AND $_POST[$field] != "") {
$this->_field_data[$field]['postdata'] = $_POST[$field];
} else if (isset($_FILES[$field]) AND $_FILES[$field] != "") {
$this->_field_data[$field]['postdata'] = $_FILES[$field];
}
}
$this->_execute($row, explode('|', $row['rules']), $this->_field_data[$field]['postdata']);
}
// Did we end up with any errors?
$total_errors = count($this->_error_array);
if ($total_errors > 0) {
$this->_safe_form_data = TRUE;
}
// Now we need to re-set the POST data with the new, processed data
$this->_reset_post_array();
// No errors, validation passes!
if ($total_errors == 0) {
return TRUE;
}
// Validation fails
return FALSE;
}
