未调用自定义Django表单中的Clean（）方法

我需要在我的实验类中验证依赖于多个字段的条件。我在我的实验表单中指定了一个“干净”方法，但从未提出过验证方法。模型的验证错误被完美地显示出来

下面是forms.py的外观：

from django import forms
from django.utils.translation import ugettext, ugettext_lazy as _

class ExperimentForm(forms.Form):
    name = forms.CharField(max_length=254)
    student_n = forms.IntegerField()
    expert_n = forms.IntegerField()
    student_cmd_n = forms.IntegerField()
    expert_cmd_n = forms.IntegerField()
    is_active = forms.BooleanField()

    error_messages = {
        'insufficient_assignments': _("The total number of commands to be evaluated must be"
                  "Greater than 28. Right now it's  %(command_number)"),
    }

    def clean(self):
        cleaned_data = super(ExperimentForm, self).clean()
        s_n = cleaned_data.get("student_n")
        e_n = cleaned_data.get("expert_n")
        s_cmd_n = cleaned_data.get("student_cmd_n")
        e_cmd_n = cleaned_data.get("expert_cmd_n")
        command_number = s_n*s_cmd_n + e_n*e_cmd_n

        if command_number < 28:
            raise forms.ValidationError(
                self.error_messages['insufficient_assignments'],
                code='insufficient_assignments',
                params={'command_number': command_number},
            )
        return self.cleaned_data

models.py的定义方式如下：

# -*- coding: utf-8 -*-
from __future__ import unicode_literals
from django.db import models
from django.core.validators import MaxValueValidator, MinValueValidator
from django.utils.encoding import python_2_unicode_compatible
from django.contrib.auth.models import User
from django.db import models
from jsonfield import JSONField
import collections

class Experiment(models.Model):
    name = models.CharField(max_length=200)
    student_n = models.IntegerField(default=0,
            validators=[MinValueValidator(0)])
    expert_n = models.IntegerField(default=0,
            validators=[MinValueValidator(0)])
    student_cmd_n  = models.IntegerField(default=2,
            validators=[MinValueValidator(2)])
    expert_cmd_n  = models.IntegerField(default=1,
            validators=[MinValueValidator(1)])
    is_active = models.BooleanField(default=True)
    replications = JSONField(load_kwargs={'object_pairs_hook': collections.OrderedDict},
            blank=True)

最后，模板experiment_form.html：

{% extends "vacs/base.html" %}
{% load widget_tweaks %}
{% block content %}

{% if form.errors %}
<div class="alert alert-danger" role="alert">
    Form error!
</div>
{% endif %}

<form method="post">{% csrf_token %}
    {{ form.as_p }}
    <input type="submit" value="Submit" />
</form>

{% endblock %}

{%extensed“vacs/base.html”%}
{%load widget_tweaks%}
{%block content%}
{%if form.errors%}
表单错误！
{%endif%}
{%csrf_令牌%}
{{form.as_p}}
{%endblock%}

---

谢谢大家!

您需要覆盖模型的

save

方法

因此，要运行

clean_fields（）

和

clean（）

请将以下方法添加到您的模型中

def save(self, *args, **kwargs):
    self.full_clean()
    return super().save(*args, **kwargs)

表单处理期间运行三种类型的清理方法。这些通常在调用上的

is\u valid（）

方法时执行 形式

def save(self, *args, **kwargs):
    self.full_clean()
    return super().save(*args, **kwargs)