Answers for "import validation error django"

import validation error in django

from django.core.exceptions import ValidationError

using regex validators in django models

from django.core.validators import RegexValidator
from django.db import models
PHONE_NUMBER_REGEX = RegexValidator(r'^[+]*[(]{0,1}[0-9]{1,4}[)]{0,1}[-s./0-9]*$', 'only valid email is required')
class SomeClass(models.Model):
  phone =  models.CharField(max_length=14, validators=[PHONE_REGEX])

django float validator

from django.core.validators import MaxValueValidator, MinValueValidator

...
weight = models.FloatField(
    validators=[MinValueValidator(0.9), MaxValueValidator(58)],
)