harpreetsb / codeigniter-form-validation

CodeIgniter library for fields form validation. It is independent of the standard library of CodeIgniter and can also be used for Ajax calls.

CodeIgniter Form Validation

CodeIgniter library for fields form validation. It is independent of the standard library of CodeIgniter and can also be used for Ajax calls.

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###How to install

1. Add the file Validation.php to your /application/libraries folder.

###How to use

1. Load library:

    $this->load->library('validation');
   

2. Load data from:

   a. POST (default):

    	$this->validation->set_post();
   

   b. GET:

    	$this->validation->set_get();
   

   c. Array data:

    	$this->validation->set_data($data);
   

3. Load your rules:

    $this->validation->required…
   

####Public functions List

• set_data Set fields data from array
• set_post Set fields data from POST
• set_get Set fields data from GET
• get_error Return error data: message and field (if exists)
• get_error_message Return error message
• get_error_field Return error field
• is_valid Check if form is valid
• set_not_valid Set form not valid ad assign message error
• required Check required fields
• required_isset Check required fields only if is set
• email Check if email fields are valid
• regexp Check that the fields meet a particular regular expression
• url Check URL fields are valid
• maxlen Check that fields are not longer than a defined value
• minlen Check that fields are not shorter than a defined value
• alpha Check that fields do not have characters other than letters of alphabet
• alpha_s Check that fields do not have characters other than letters of alphabet and space
• num Check that fields do not have characters other than numbers
• num_s Check that fields do not have characters other than numbers and space
• alphanum Check that fields do not have characters other than letters and numbers
• alphanum_s Check that fields do not have characters other than letters of alphabet, numbers and space
• no_spaces Check that fields do not have spaces
• num_gt Check if a numeric field is greater than a certain value
• num_lt Check if a numeric field is less than a certain value
• date Check that the fields have a date
• date_gt Check that a date is larger than other
• date_lt Check that a date is smaller than other
• date_en Check that the fields have a English date
• datetime Check that the fields have a datetime value
• checked Check that the field has been checked
• selected Check that the field has been selected
• equal Check that the two fields are equal
• callback Check the correctness of the field $param through the method $method.

###How to work

public function save() {
	$this->load->library('validation');
	$this->validation->set_data($data);
	// $this->validation->set_post();

	$this->validation->required(array('email', 'username', 'firstname', 'lastname', 'city', 'password'), 'Fields are required'),
		->email('email', 'Email is not valid field')
		->maxlen('username', 32, 'Username cannot be longer than 32 characters')
		->minlen('username', 6, 'Username cannot be shorter than 6 characters')
		->regxp('username', '/^([a-zA-Z0-9\-]*)$/i', 'Username cannot have characters other than letters, numbers and hyphens')
		->callback('_unique', 'Username already exists.', 'username')
		->callback(array($your_model, 'method_name'), 'Error message', array('parameter1', 'parameter2', 'parameter3'))
		->callback('_other_func', 'Your error.');

	if ($this->validation->is_valid()) {
		if ($data['username'] == 'admin')
			$this->validation->set_not_valid('Username is already registered');

	}

	if ($this->validation->is_valid())
		echo 'success!';
	else
		echo $this->validation->get_error_message();
}

public function _unique($username) {
	$res = $this->db->query('…');
	return $res->id != 0;
}

public function _other_func() {
	// Check something
	return $error;
}