python – Django does not display errors from the custom validator, and instead resets the form

I recently started learning Django and can’t solve one problem. I created my validator for the form, but instead of showing an error window, it just resets the form. Here is the code from django.db import models from django.urls import reverse_lazy from django.core.exceptions import ValidationError class News(models.Model): title = models.CharField(max_length=150, verbose_name=”Title”) content = models.TextField(blank=True, … Read more

c# – How do I allow the user to set the form + control styles in WPF applications?

I’m just starting to make the transition from and winforms to c# and WPF and starting on my first app. I’ve done a lot of tutorials and now it’s time to try and put some things into practice. My first challenge is theming of my application. I want to present my user with a … Read more

Pass PHP variable from HTML form to Javascript

could you help me pass a variable that was taken from a html form into javascript. The form asks for the tablename <br> New tablename:<br> <input type=”text” name=”table”> It is passed through PHP: if (isset($_POST[‘submit’])) { $user = $_POST[‘user’]; $password = $_POST[‘password’]; $table = $_POST[‘table’]; $geometry = $_POST[‘geom’]; } A first action is underway, and … Read more

php – The current field `category` is not linked to an admin. Please create one for the target model: “ when using Form Types other than ModelType, Symfony

I’m trying to create/expand upon a basic app following the Symfony Sonata Admin Bundle documentation. There are BlogPost, Category, and Author entities and their respective admins. BlogPost has a ManyToOne relationship to both Category and Author. I notice from the start that I had trouble applying different Form Types to ‘Category’ but thought maybe I … Read more

javascript – Material-ui DatePicker does not work and the form does not render

// Bancos component (means Banks) // if I don’t comment the lines commented bellow, the form does not render and breaks the app. import React, { useState } from ‘react’; import { Container } from ‘@mui/material’; import { Typography } from ‘@mui/material’; import { Box } from ‘@mui/material’; import { TextField } from ‘@mui/material’; import … Read more

twitter bootstrap – modal form validation after using select2

I am using partialview in modal form. In this form there is a select2 option list which working fine. But when you press submit button, required fields as per model are not validating ie not showing error. I have used lots of option from internet, but failed to get the desired result. When we remove … Read more