This method will check the existence of ImageMagick and GD extensions.
| public static checkRequirements ( ) : string | ||
| return | string | the name of the graphic extension, either "imagick" or "gd". |
/**
* Renders the CAPTCHA image.
* @param string $code the verification code
* @return string image contents
*/
protected function renderImage($code)
{
if (Captcha::checkRequirements() === 'gd') {
return $this->renderImageByGD($code);
} else {
return $this->renderImageByImagick($code);
}
}
/**
* Renders the CAPTCHA image.
* @param string $code the verification code
* @return string image contents
* @throws InvalidConfigException if imageLibrary is not supported
*/
protected function renderImage($code)
{
if (isset($this->imageLibrary)) {
$imageLibrary = $this->imageLibrary;
} else {
$imageLibrary = Captcha::checkRequirements();
}
if ($imageLibrary === 'gd') {
return $this->renderImageByGD($code);
} elseif ($imageLibrary === 'imagick') {
return $this->renderImageByImagick($code);
} else {
throw new InvalidConfigException("Defined library '{$imageLibrary}' is not supported");
}
}
/**
* A factory to create pre-configured form models. Only model class names
* from the nineinchnick\usr\models namespace are allowed.
* Sets scenario, password strength rules for models extending BasePasswordForm and attaches behaviors.
*
* @param string $class without the namespace
* @param string $scenario
* @return Model
*/
public function createFormModel($class, $scenario = null)
{
$namespacedClass = "\\nineinchnick\\usr\\models\\{$class}";
/** @var Model */
$form = new $namespacedClass();
if ($scenario !== null) {
$form->setScenario($scenario);
}
if ($form instanceof \nineinchnick\usr\models\BaseUsrForm) {
$form->webUser = Yii::$app->user;
}
if ($form instanceof \nineinchnick\usr\models\BasePasswordForm) {
$form->passwordStrengthRules = $this->passwordStrengthRules;
}
switch ($class) {
default:
break;
case 'ProfileForm':
$form->pictureUploadRules = $this->pictureUploadRules;
if (!empty($this->profileFormBehaviors)) {
foreach ($this->profileFormBehaviors as $name => $config) {
$form->attachBehavior($name, $config);
}
}
// no break
// no break
case 'RecoveryForm':
if ($this->captcha !== null && \yii\captcha\Captcha::checkRequirements()) {
$form->attachBehavior('captcha', ['class' => 'nineinchnick\\usr\\components\\CaptchaFormBehavior', 'ruleOptions' => $class == 'ProfileForm' ? ['on' => 'register'] : ['except' => ['reset', 'verify']]]);
}
break;
case 'LoginForm':
if ($this->loginFormBehaviors !== null && is_array($this->loginFormBehaviors)) {
foreach ($this->loginFormBehaviors as $name => $config) {
$form->attachBehavior($name, $config);
}
}
break;
case 'AuthForm':
$form->setValidProviders(array_keys(Yii::$app->get('authClientCollection')->clients));
break;
}
return $form;
}
public function rules()
{
return array([['username'], 'required', 'message' => '请输入用户名'], [['username'], 'required', 'message' => '请输入密码'], [['username'], 'checkUserNameAndPassword'], [['password'], 'checkUserNameAndPassword'], [['verifyCode'], 'captcha', 'skipOnEmpty' => !Captcha::checkRequirements(), 'message' => '验证码不正确']);
}
