As of 0.20.1 you can helperText and error props <TextField hintText=”Phone” error ={this.state.errorText.length === 0 ? false : true } floatingLabelText=”Phone” name=”phone” helperText={this.state.errorText} onChange={this.onChange.bind(this)}/>
Most people have gotten the answer basically right — that the rules are different when you serve a page a billion times a day. Bytes begin to matter, and the current level of compression clearly shows that Google is concerned with saving bandwidth. A few points: One, people are implying that Google’s reasons for saving … Read more
This is a great place to use regular expressions. By using a regular expression, you can replace all that code with just one line. You can use the following regex to validate your requirements: [0-9]*\.?[0-9]* In other words: zero or more numeric characters, followed by zero or one period(s), followed by zero or more numeric … Read more
I think my question has just been solved by another article, Clarified CQRS by Udi Dahan. The section “Commands and Validation” starts as follows: Commands and Validation In thinking through what could make a command fail, one topic that comes up is validation. Validation is different from business rules in that it states a context-independent … Read more
You can add a form onsubmit handler, something like: <form onsubmit=”return validate();”> </form> <script>function validate() { // check if input is bigger than 3 var value = document.getElementById(‘titleeee’).value; if (value.length < 3) { return false; // keep form from submitting } // else form is good let it submit, of course you will // probably … Read more
You can do this since Django 1.7 from django.forms import ModelForm from django.core.exceptions import NON_FIELD_ERRORS class ArticleForm(ModelForm): class Meta: error_messages = { NON_FIELD_ERRORS: { ‘unique_together’: “%(model_name)s’s %(field_labels)s are not unique.”, } }
You can just use the “@Size”-annotation twice: @Size(min = 2, message = “{validation.name.size.too_short}”) @Size(max = 200, message = “{validation.name.size.too_long}”) private String name;