forms

Why does setting ng-model to undefined not make the form/input valid again?

Whenever you use ng-model on an input or select tag, angular internally manages two values for the field, one is $viewValue and other is $modelValue $viewValue -> Used for display purpose on view $modelValue-> Actual value which is used inside scope. When using an input tag with type=”email” Angular constantly validates the input value. And … Read more

How do I get all controls of a form in Windows Forms?

With recursion… public static IEnumerable<T> Descendants<T>( this Control control ) where T : class { foreach (Control child in control.Controls) { T childOfT = child as T; if (childOfT != null) { yield return (T)childOfT; } if (child.HasChildren) { foreach (T descendant in Descendants<T>(child)) { yield return descendant; } } } } You can use … Read more

Symfony Forms: HTML5 datalist

First, add your new FormType for the field:. <?php // src/Acme/Form/Type/DatalistType namespace Acme\Form\Type; use Symfony\Component\Form\AbstractType; use Symfony\Component\Form\Extension\Core\Type\TextType; use Symfony\Component\Form\FormInterface; use Symfony\Component\Form\FormView; use Symfony\Component\OptionsResolver\OptionsResolver; class DatalistType extends AbstractType { public function getParent() { return TextType::class; } public function configureOptions(OptionsResolver $resolver) { $resolver->setRequired([‘choices’]); } public function buildView(FormView $view, FormInterface $form, array $options) { $view->vars[‘choices’] = $options[‘choices’]; } … Read more

Make input element (type=”text”) handle multiple lines of text

You need to use an HTML <textarea> element. From MDN: <textarea> The HTML <textarea> element represents a multi-line plain-text editing control. Using <input> for multiline text is not possible natively and, if hacked, would be invalid HTML. HTML5 spec: 4.10.5.1.2 Text (type=text) state and Search state (type=search) The input element represents a one line plain … Read more

HTML Form File Uploads doesn’t upload file

you forgot to mention the enctype=”multipart/form-data” <form action=”upload_handler.php” enctype=”multipart/form-data” method=”post”> Select image to upload: <input type=”file” name=”fileToUpload” id=”fileToUpload”> <input type=”submit” value=”Upload” name=”submit”> </form>

Custom Checkbox

There is a CSS trick that actually works by hiding the checkbox (or radio), defining a label (which in all relevant browsers will turn the checkbox on/off) that will be the visual representation, and using the :checked and + selectors. This is just a simple example: .foscheck input { display: none; } .foscheck label { … Read more