Codeigniter: Cannot upload files, Undefined Index : avatar - php

Question

I cannot seem to upload files in codeigniter. I don't know if the issue lies with the if ($_FILES['avatar']['name'] == "").
My controller
private function upload_avatar($file)
{
$newName = $file->getRandomName();
$upload = $file->move(ROOTPATH . 'public/assets/avatar', $newName);
if ($upload) {
return $newName;
} else {
return false;
}
}
public function change_data()
{
helper(['form', 'url']);
$userModel = new UserModel();
if ($this->request->getMethod() == 'post') {
if ($_FILES['avatar']['name'] == "")
{
$rules = [
'nama' => 'required|alpha_space|min_length[2]',
'email' => 'required|valid_email',
'nip' => 'required|min_length[2]',
'tempat_lahir' => 'required|alpha_space|min_length[2]'
];
} else {
$rules = [
'nama' => 'required|alpha_space|min_length[2]',
'email' => 'required|valid_email',
'nip' => 'required|min_length[2]',
'tempat_lahir' => 'required|alpha_space|min_length[2]',
'avatar' => [
'uploaded[avatar]',
'mime_in[avatar,image/jpg,image/jpeg,image/png]',
'max_size[avatar,4096]'
]
];
}
if ($this->validate($rules)) {
if ($_FILES['avatar']['name'] == "") {
$params = [
'nama' => $userModel->escapeString(esc($this->request->getPost('nama'))),
'email' => $userModel->escapeString(esc($this->request->getPost('email'))),
'nip' => $userModel->escapeString(esc($this->request->getPost('nip'))),
'tempat_lahir' => $userModel->escapeString(esc($this->request->getPost('tempat_lahir'))),
];
} else {
//get data user by session email
$user = $userModel->where('email', session()->get('email'))
->first();
if ($user) {
$deleteFile = unlink('./assets/avatar/' . $$user['avatar']);
if ($deleteFile) {
$file = $this->request->getFile('avatar');
$uploadFile = $this->upload_avatar($file);
}
}
$params = [
'nama' => $userModel->escapeString(esc($this->request->getPost('nama'))),
'email' => $userModel->escapeString(esc($this->request->getPost('email'))),
'nip' => $userModel->escapeString(esc($this->request->getPost('nip'))),
'tempat_lahir' => $userModel->escapeString(esc($this->request->getPost('tempat_lahir'))),
'avatar' => $uploadFile,
];
}
$update = $userModel->update($user['id_user'], $params);
if ($update) {
session()->setFlashdata('success', 'Berhasil Update Data. Apabila Tampilan Data Belum Berubah, Silakan Lakukan Logout dan Login Kembali');
return redirect()->route('profile');
} else {
session()->setFlashdata('danger', 'Gagal Update Data');
return redirect()->route('edit')->withInput();
}
} else {
$data['validation'] = $this->validator;
}
}
$data['title'] = 'Edit Profile';
return view('admin/users/ubah_data', $data);
}
My view
<form action="<?= base_url('admin/user/change_data') ?>" method="POST">
<?= csrf_field(); ?>
<div class="form-group">
<label for="nama">Nama</label>
<input type="text" class="form-control" id="nama" name="nama" value="<?= session()->nama ?>">
</div>
<div class="form-group">
<label for="nip">NIP</label>
<input type="text" class="form-control" id="nip" name="nip" value="<?= session()->nip ?>">
</div>
<div class="form-group">
<label for="email">Email</label>
<input type="text" class="form-control" id="email" name="email" value="<?= session()->email ?>">
</div>
<div class="form-group">
<label for="tempat_lahir">Tempat Lahir</label>
<input type="text" class="form-control" id="tempat_lahir" name="tempat_lahir" value="<?= session()->tempat_lahir ?>">
</div>
<div class="form-group">
<label for="avatar">Foto <small>(Optional)</small></label>
<div class="custom-file">
<input type="file" class="custom-file-input" id="avatar" name="avatar">
<label class="custom-file-label" for="avatar">Choose file</label>
</div>
</div>
<div class="form-group">
<input type="submit" value="Update" class="btn btn-info" />
</div>
</form>
After i push the upload button Undefined index: avatar message appeared.
Any help will be greatly appreciated. I cannot seem to figure out why ($_FILES['avatar']['name'] == "") has problem

Answer 1

I think you miss to include enctype="multipart/form-data" in form tag
<form action="url-action" method="POST" enctype="multipart/form-data">
your form
</form>