File Upload Validation In Codeigniter
I wrote a complete example for your problem, I hope it will help. In the following code I am using CI's Form validation callback and Form Validation Custom Error Messages.
Controller: Front.php
class Front extends CI_Controller {
public function index() {
$this->load->view('form');
}
public function upload_image() {
$this->load->library('form_validation');
if ($this->form_validation->run('user_data') == FALSE) {
$this->load->view('form');
}
else {
echo 'You form Submitted Successfully ';
}
}
public function validate_image() {
$check = TRUE;
if ((!isset($_FILES['my_image'])) || $_FILES['my_image']['size'] == 0) {
$this->form_validation->set_message('validate_image', 'The {field} field is required');
$check = FALSE;
}
else if (isset($_FILES['my_image']) && $_FILES['my_image']['size'] != 0) {
$allowedExts = array("gif", "jpeg", "jpg", "png", "JPG", "JPEG", "GIF", "PNG");
$allowedTypes = array(IMAGETYPE_PNG, IMAGETYPE_JPEG, IMAGETYPE_GIF);
$extension = pathinfo($_FILES["my_image"]["name"], PATHINFO_EXTENSION);
$detectedType = exif_imagetype($_FILES['my_image']['tmp_name']);
$type = $_FILES['my_image']['type'];
if (!in_array($detectedType, $allowedTypes)) {
$this->form_validation->set_message('validate_image', 'Invalid Image Content!');
$check = FALSE;
}
if(filesize($_FILES['my_image']['tmp_name']) > 2000000) {
$this->form_validation->set_message('validate_image', 'The Image file size shoud not exceed 20MB!');
$check = FALSE;
}
if(!in_array($extension, $allowedExts)) {
$this->form_validation->set_message('validate_image', "Invalid file extension {$extension}");
$check = FALSE;
}
}
return $check;
}
}
View: form.php
<!DOCTYPE html>
<html>
<head>
<title>Image Upload</title>
</head>
<body>
<h1><a href="<?= base_url() ?>">Form</a></h1>
<?php if(!empty(validation_errors())): ?>
<p><?= validation_errors() ?></p>
<?php endif; ?>
<?= form_open('front/upload_image', ['enctype' => "multipart/form-data"]) ?>
<label>Name: </label><input type="text" name="name" value="<?= set_value('name') ?>"></label>
<label>E-mail: </label><input type="email" name="email" value="<?= set_value('email') ?>"></label>
<input type="file" name="my_image">
<button type="submit">Submit</button>
<?= form_close() ?>
</body>
</html>
form_validation.php
$config = array(
'user_data' => array(
array(
'field' => 'name',
'label' => 'Name',
'rules' => 'trim|required'
),
array(
'field' => 'email',
'label' => 'Email',
'rules' => 'trim|required|valid_email'
),
array(
'field' => 'my_image',
'label' => 'Image',
'rules' => 'callback_validate_image'
)
)
);
In above example first I am validating the name and email and for the Image I am calling the validate_image function to validate it, since form_validation library does not provide image validation but i has callbacks to do custom validations, the validate_image will check image content type then check image file size and then check image extension if any of these requirements are not fulfilled it will set error message for each requirement using set_message() function of form_validation library.
Currently you are not getting error because you set validation rules, you also initialized configuration but after uploading class you are not checking that either file is being uploaded or errors.
Please check below mentioned solution, it will help you fix this.
Update 1 :
In order to call a specific group, you will pass its name to the $this->form_validation->run('task') method. I can not see any $config['task'] array in your code. Please check my below mentioned code and update based on your inputs.
public function Task() {
$config = array(
'task' => array(
array(
'field' => 'username',
'label' => 'Username',
'rules' => 'required'
),
array(
'field' => 'email',
'label' => 'Email',
'rules' => 'required'
)
));
$this->load->library('form_validation');
if ($this->form_validation->run('task') == FALSE) {
$this->data['Task'] = $this->bm->get_usr();
$data['title'] = "Add New Task";
$this->load->view('Subadmin/header', $data);
$this->load->view('Subadmin/nav');
$this->load->view('Subadmin/sidebar');
$this->load->view('Subadmin/task', $this->data);
$this->load->view('Subadmin/footer');
} else {
$fconfig['upload_path'] = './taskimages/';
$fconfig['allowed_types'] = 'gif|jpg|png';
$fconfig['max_size'] = '10048';
$fconfig['overwrite'] = FALSE;
$this->load->library('upload', $fconfig); //Load the upload CI library
$this->load->initialize($fconfig);
if (!$this->upload->do_upload('my_image')) {
$error = array('error' => $this->upload->display_errors());
$this->load->view('form' ,$error);
} else {
$file_info = $this->upload->data();
$file_name = $file_info['my_image'];
$data = array(
'Job_Title' => $this->input->post('jtitle'),
'Priority' => $this->input->post('jnature'),
'Assignee' => $this->input->post('assigne'),
'Employee_Name' => $this->input->post('assignto'),
'Due_Date' => $this->input->post('ddate'),
'Reminder' => $this->input->post('reminder'),
'Task_Image' => $file_name,
);
$this->bm->add_task($data);
$data['upload_data'] = array('upload_data' => $this->upload->data());
$this->load->view('YOUR_SUCCESS_VIEW PAGE', $data);
}
}
}
Let me know if it not works.
How about File Uploading Class from CI?
Validations are also available from the class:
$config['allowed_types'] = 'gif|jpg|png';
$config['max_size'] = 100;
$config['max_width'] = 1024;
$config['max_height'] = 768;
The link includes the Upload form, Success page and the Controller.
Just follow the instructions from there and you'll never get lost.