When creating a hook I want to know if the models variable is exposed in the function like in the assosiations:
...
classMethods: {
associate: function ( models ) {
users.belongsTo( models.roles, { foreignKey: 'role' } );
}
}
...
What I'd like to do is to update the a value of another model, first I have to update the current amount of product adding the amount purchased (any tips?), so, I need the models var.
hooks : {
afterCreate: function ( inventory, options ) {
//What does the `options` value has?
}
}
One workaround suggested was to simply require the model...
Also I would like to know if afterCreate would work for bulkCreate? Or does it necessary has to be afterBulkCreate?
afterCreate is triggered after each creation. afterBulkCreate is triggered after the whole set has been created. So if you are creating 10 items, afterCreate would be called 10 times, after each item was created. But afterBulkCreate would only be called once.
This doesn't seem to be documented throughly enough but I'd suggest just creating a hook and then doing console.log(arguments) inside the hook to see which arguments are beeing passed in. But I'd suggest to just require the model like you said.
The models variable is not exposed in the function. The solution I found when I need to update the value of another model is the following:
Define a function to get the hooks that receives the models:
var getHooks = function(models) {
return {
afterCreate: function(item, options) {
// Can access the models:
models.roles.create({...});
},
beforeCreate: function(item, options) {
// Code here
}
};
};
And set the hooks functions in the associate method:
classMethods: {
associate: function ( models ) {
users.belongsTo( models.roles, { foreignKey: 'role' } );
var hooks = getHooks(models);
for(var name in hooks) {
users.addHook(name, hooks[name]);
}
}
}
I want to create input forms which validate user input and prevent the model from being saved with invalid data. I have been using databinding which works up to a point but my implementation is not as intuitive as I would like.
Imagine an input which contains '123' and the value must not be empty. The user deletes the characters one by one until empty. The databinding validator shows an error decoration.
However, if the user saves the form and reloads it, then a '1' is displayed in the field - i.e. the last valid input. The databinding does not transmit the invalid value into the model.
I have a ChangeListener but this is called before the databinding so at that point the invalid state has not been detected.
I would like the error to be displayed in the UI but the model remains valid (this is already so). Also, for as long as the UI contains errors, it should not be possible to save the model.
/**
* Bind a text control to a property in the view model
**/
protected Binding bindText(DataBindingContext ctx, Control control,
Object viewModel, String property, IValidator validator)
{
IObservableValue value = WidgetProperties.text(SWT.Modify).observe(
control);
IObservableValue modelValue = BeanProperties.value(
viewModel.getClass(), property).observe(viewModel);
Binding binding = ctx.bindValue(value, modelValue, getStrategy(validator), null);
binding.getTarget().addChangeListener(listener);
ControlDecorationSupport.create(binding, SWT.TOP | SWT.LEFT);
return binding;
}
private UpdateValueStrategy getStrategy(IValidator validator)
{
if (validator == null)
return null;
UpdateValueStrategy strategy = new UpdateValueStrategy();
strategy.setBeforeSetValidator(validator);
return strategy;
}
private IChangeListener listener = new IChangeListener()
{
#Override
public void handleChange(ChangeEvent event)
{
// notify all form listeners that something has changed
}
};
/**
* Called by form owner to check if the form contains valid data e.g. before saving
**/
public boolean isValid()
{
System.out.println("isValid");
for (Object o : getDataContext().getValidationStatusProviders())
{
ValidationStatusProvider vsp = (ValidationStatusProvider) o;
IStatus status = (IStatus)vsp.getValidationStatus()
.getValue();
if (status.matches(IStatus.ERROR))
return false;
}
return true;
}
Your best bet is to steer clear of ChangeListeners - as you've discovered, their order of execution is either undefined or just not helpful in this case.
Instead, you want to stick with the 'observable' as opposed to 'listener' model for as long as possible. As already mentioned, create an AggregateValidationStatus to listen to the overall state of the DataBindingContext, which has a similar effect to your existing code.
Then you can either listen directly to that (as below) to affect the save ability, or you could even bind it to another bean.
IObservableValue statusValue = new AggregateValidationStatus(dbc, AggregateValidationStatus. MAX_SEVERITY);
statusValue.addListener(new IValueChangeListener() {
handleValueChange(ValueChangeEvent event) {
// change ability to save here...
}
});
You can use AggregateValidationStatus to observe the aggregate validation status:
IObservableValue value = new AggregateValidationStatus(bindContext.getBindings(),
AggregateValidationStatus.MAX_SEVERITY);
You can bind this to something which accepts an IStatus parameter and it will be called each time the validation status changes.
I have a form say:
class Application_Form_UserDetails extends Zend_Form
{
public function init()
{
$pswd = new Zend_Form_Element_Password('password');
$pswd->setLabel('New password:');
$pswd->setAttrib('size', 25);
$pswd->setRequired(false);
$pswd->addValidator('StringLength', false, array(4,15));
$pswd->addErrorMessage('Wron password');
}
}
In my user details controller class I have:
class UserDetailsController extends Zend_Controller_Action {
public function editAction()
{
$userId = $this->userInfo->id;
$DbTableUsers = new Application_Model_DbTable_User;
$obj = $DbTableUsers->getUserDetails($userId);
$this->view->formUser = new $this->_UserDetails_form_class;
$this->view->formCompany = new $this->_CompanyDetails_form_class;
if ($obj) {
$this->view->formUser->populate($obj);
}
$url = $this->view->url(array('action' => 'update-user-details'));
$this->view->formUser->setAction($url);
}
public function updateUserDetailsAction()
{
$formUser = new $this->_UserDetails_form_class;
if ($formUser->isValid($this->getRequest()->getPost())) {
}
else {
//validation failed
$formUser->markAsError();
$this->view->formUser = $formUser;
$this->_helper->redirector('edit', 'user-details');
}
}
}
The first time Edit action is called the form built and displayed.
User fills the form and sends it (updateUserDetailsAction is called).
In updateUserDetailsAction, on validation failure I mark the form as having errors and want to display the form with error messages that I previously set in updateUserDetailsAction class.
Then I redirect:
$this->_helper->redirector('edit', 'user-details');
in order to display the same form but with errors for the user to re-enter correct values.
The problem is I don't know how to let know the edit action that the form must display validation errors?
On $this->_helper->redirector('edit', 'user-details'); the form is redisplayed
as a new form with cleared erros but I need them displayed.
Do I do this the correct way?
regards
Tom
Problem comes from the fact that you are redirecting and in each method you are creating a new instance of the form, that means the form class is loosing its state - data you injected from the request and any other values passed to this object.
Combine editAction and updateUserDetailsAction into one method:
...
$formUser = new Form();
// populate the form from the model
if ($this->getRequest()->isPost()) {
if ($formUser->isValid($this->getRequest()->getPost())) {
// update the model
}
}
...
and have the form being submitted to the edit action. This will simplify your code and remove code duplication.
If you just wan to fix your code you can instantiate the form object in the init() method of your controller as set it as a property of your controller. This will way you will reuse same instance after redirection. I still think that solution above is much more compact and easier to understand for someone else.
In my form's model, I have a custom validation function for a field defined in this way
class SignupForm extends Model
{
public function rules()
{
return [
['birth_date', 'checkDateFormat'],
// other rules
];
}
public function checkDateFormat($attribute, $params)
{
// no real check at the moment to be sure that the error is triggered
$this->addError($attribute, Yii::t('user', 'You entered an invalid date format.'));
}
}
The error message doesn't appear under the field in the form view when I push the submit button, while other rules like the required email and password appear.
I'm working on the Signup native form, so to be sure that it is not a filed problem, I've set the rule
['username', 'checkDateFormat']
and removed all the other rules related to the username field, but the message doesn't appear either for it.
I've tried passing nothing as parameters to checkDateFormat, I've tried to explicitly pass the field's name to addError()
$this->addError('username', '....');
but nothing appears.
Which is the correct way to set a custom validation function?
Did you read documentation?
According to the above validation steps, an attribute will be
validated if and only if it is an active attribute declared in
scenarios() and is associated with one or multiple active rules
declared in rules().
So your code should looks like:
class SignupForm extends Model
{
public function rules()
{
return [
['birth_date', 'checkDateFormat'],
// other rules
];
}
public function scenarios()
{
$scenarios = [
'some_scenario' => ['birth_date'],
];
return array_merge(parent::scenarios(), $scenarios);
}
public function checkDateFormat($attribute, $params)
{
// no real check at the moment to be sure that the error is triggered
$this->addError($attribute, Yii::t('user', 'You entered an invalid date format.'));
}
}
And in controller set scenario, example:
$signupForm = new SignupForm(['scenario' => 'some_scenario']);
Try forcing the validation on empty field
['birth_date', 'checkDateFormat', 'skipOnEmpty' => false, 'skipOnError' => false],
Also, make sure you don't assign id to your birth_date field in your view.
If you do have id for your birth_date, you need to specify the selectors
<?= $form->field($model, 'birth_date', ['selectors' => ['input' => '#myBirthDate']])->textInput(['id' => 'myBirthDate']) ?>
To make custom validations in yii 2 , you can write custom function in model and assign that function in rule.
for eg. I have to apply password criteria in password field then I will write like this in model.
public function rules()
{
return [
['new_password','passwordCriteria'],
];
}
public function passwordCriteria()
{
if(!empty($this->new_password)){
if(strlen($this->new_password)<8){
$this->addError('new_password','Password must contains eight letters one digit and one character.');
}
else{
if(!preg_match('/[0-9]/',$this->new_password)){
$this->addError('new_password','Password must contain one digit.');
}
if(!preg_match('/[a-zA-Z]/', $this->new_password)){
$this->addError('new_password','Password must contain one character.');
}
}
}
}
You need to trigger $model->validate() somewhere if you are extending from class Model.
I stumbled on this when using the CRUD generator. The generated actionCreate() function doesn't include a model validation call so custom validators never get called. Also, the _form doesn't include and error summary.
So add the error summary to the _form.
<?= $form->errorSummary($model); ?>
...and add the validation call - $model->validate() - to the controller action
public function actionCreate()
{
$model = new YourModel();
if ($model->load(Yii::$app->request->post()) && $model->validate()) {...
Although it's an old post i thought I should answer.
You should create a Custom Validator Class and to create a validator that supports client-side validation, you should implement the yii\validators\Validator::clientValidateAttribute() method which returns a piece of JavaScript code that performs the validation on the client-side. Within the JavaScript code.
You may use the following predefined variables:
attribute: the name of the attribute being validated.
value: the value being validated.
messages: an array used to hold the validation error messages for
the attribute.
deferred: an array which deferred objects can be pushed into
(explained in the next subsection).
SO that means you can use messages array to push your messages to the client end on runtime within the javascript code block in this method.
I will create a class that includes dummy checks that could be replaced the way you want them to. and change the namespace according to your yii2 advanced or basic.
Custom Client-side Validator
namespace common\components;
use yii\validators\Validator;
class DateFormatValidator extends Validator{
public function init() {
parent::init ();
$this->message = 'You entered an invalid date format.';
}
public function validateAttribute( $model , $attribute ) {
if ( /*SOME CONDITION TO CHECK*/) {
$model->addError ( $attribute , $this->message );
}
}
public function clientValidateAttribute( $model , $attribute , $view ) {
$message = json_encode ( $this->message , JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE );
return <<<JS
if ($("#DATE-1").val()=="" || $("#DATE-2").val() =="") {
messages.push($message);
}
JS;
}
}
and then inside your model SigupForm add the rule
['birth_date', 'common\components\DateFormatValidator'],
Deferred Validation
You can even add ajax calls inside the clientValidateAttribute function and on the base of the result of that ajax call you can push message to the client end but you can use the deferred object provided by yii that is an array of Deferred objects and you push your calls inside that array or explicitly create the Deferred Object and call its resolve() method.
Default Yii's deferred Object
public function clientValidateAttribute($model, $attribute, $view)
{
return <<<JS
deferred.push($.get("/check", {value: value}).done(function(data) {
if ('' !== data) {
messages.push(data);
}
}));
JS;
}
More about Deferred Validation
You need to render the model from controller. Without initializing the model in view. And in the controller you need to call the validate function
Are you sure the first parameter of addError shouldn't be like this
$this->addError(**'attribute'**, Yii::t('user', 'You entered an invalid date format.'));
I had common problem.
In your validation function:
public function checkDateFormat($attribute, $params)
{
// no real check at the moment to be sure that the error is triggered
$this->addError($attribute, Yii::t('user', 'You entered an invalid date format.'));
}
$params doesn`t get any value at all. It actually always equals to Null. You have to check for your attribute value in function:
public function checkDateFormat($attribute, $params)
{
if($this->birth_date == False)
{
$this->addError($attribute, Yii::t('user', 'You entered an invalid date format.'));
}
}
that`s how it worked for me.
If you don't use scenarios for your model, you must mark your atribute as 'safe':
['birth_date','safe'],
['birth_date', 'checkDateFormat'],
And, on the other hand, you can use this for date validation:
['birth_date','safe'],
[['birth_date'],'date', 'format'=>'php:Y-m-d'],
You can change format as you want.
**We should set attributes to the function to work with input value **
public function rules()
{
return [
['social_id','passwordCriteria'],
];
}
public function passwordCriteria($attribute, $params)
{
if(!empty($this->$attribute)){
$input_value = $this->$attribute;
//all good
}else{
//Error empty value
$this->addError('social_id','Error - value is empty');
}
}
Are you by any chance using client side validation? If you do then you have to write a javascript function that would validate the input. You can see how they do it here:
http://www.yiiframework.com/doc-2.0/guide-input-validation.html#conditional-validation
Another solution would be to disable client validation, use ajax validation, that should bring back the error too.
Also make sure that you have not overwritten the template of the input, meaning make sure you still have the {error} in there if you did overwrite it.
Your syntax on rules should be something like this man,
[['birth_date'], 'checkDateFormat']
not this
['birth_date', 'checkDateFormat']
So in your case, it should look like below
...
class SignupForm extends Model
{
public function rules()
{
// Notice the different with your previous code here
return [
[['birth_date'], 'checkDateFormat'],
// other rules
];
}
public function checkDateFormat($attribute, $params)
{
// no real check at the moment to be sure that the error is triggered
$this->addError($attribute, Yii::t('user', 'You entered an invalid date format.'));
}
}
I have used form widgets for my user registration which has sales or customer radio buttons
If customer button is checked means i have to insert into registration table and one more table also. So i want to use the form submitted values before executing $form->save();.
How to do this.Pl help me......
My radio button field name is executive_check
protected function processForm(sfWebRequest $request, sfForm $form)
{
$form->bind($request->getParameter($form->getName()),$request->getFiles($form->getName()));
if ($form->isValid())
{
//i have to check the form user type radio button value here
$form->save();
}
else
{
echo "Error";
}
}
Please help me........
In my opinion, you should override save method on your form, and do not change anything on your actions.
For example:
class BookForm extends BaseBookForm {
public function save($con = null) {
if($this->getValue('isCustomer')) {
// do your additional save
}
return parent::save();
}
}
If you want to access posted variable from the form you have to overwrite the save() function in your registration form and you can access all of the post variables in one array with name "$this->values". Please try like below
public function save($con = null){
// This will list out whole array of the posted variables.
echo "<pre>";
print_r($this->values);
// to use your field variable with named "executive_check" you can get value by below syntax
if($this->values['executive_check'] == 'radiobuttonValue'){
// your logic if sales or customer radio button is selected.
}
// will call parent form save function to save all data
parent::save($con);
}