4

我正在尝试编写一个表单清理方法，以确保输入的一对日期当前不被存储在模型中的日期范围所覆盖。

所以我想捕捉fromdate >= value <= todate，但between我的干净方法中的过滤器没有得到它。

任何人都可以提供一些启示吗？

模型.py

class Dates(models.Model):
    fromdate = models.DateField()
    todate = models.DateField()

表格.py

class Form(forms.Form):
    fromdate = forms.DateField()

    todate = forms.DateField()

    class Meta:
        model = Dates

    def clean_fromdate(self):
        form_fromdate = self.cleaned_data.get('fromdate')

        exists = Dates.objects.filter(fromdate__contains=form_fromdate).exists()
        if exists == True:
            raise forms.ValidationError(_("A period is already entered for this date"))

        between = Dates.objects.filter(fromdate__gte=form_fromdate,
            todate__lte=form_fromdate).exists()
        if between == True:
            raise forms.ValidationError(_("Period already between this date 1"))

        return form_fromdate


    def clean_todate(self):
        form_todate = self.cleaned_data.get('todate')

        exists = Dates.objects.filter(todate__contains=form_todate).exists()
        if exists == True:
            raise forms.ValidationError(_("A period is already entered for this date"))

        between = PeriodsOfInactivity2012.objects.filter(fromdate__gte=form_todate,
            todate__lte=form_todate).exists()
        if between == True:
            raise forms.ValidationError(_("Period already between this date 2"))

        return form_todate
4

1 回答 1

10

这应该适合你

from django import forms
from models import Dates

class Form(forms.ModelForm):
    fromdate = forms.DateField()
    todate = forms.DateField()

    class Meta:
        model = Dates

    def clean(self):
        form_fromdate = self.cleaned_data.get('fromdate')
        form_todate = self.cleaned_data.get('todate')
        between = Dates.objects.filter(fromdate__gte=form_fromdate, todate__lte=form_todate).exists()
        if between:
            raise forms.ValidationError("Period already between this dates")
        super(Form, self).clean()

编辑

#views.py
#!/usr/bin/env python
# -*- coding: utf-8 -*-
from django.http import HttpResponse
from django.template import RequestContext
from django.shortcuts import render_to_response

from forms import Form

def index(request, template='index.html'):
    form = Form()
    if request.method == "POST":
        form = Form(request.POST)
        if form.is_valid():
            return HttpResponse(form)

    kwvars = {
        "form": form,
    }
    return render_to_response(template, kwvars, context_instance=RequestContext(request))

#forms.py
from django import forms
from models import Dates

class Form(forms.ModelForm):
    fromdate = forms.DateField()
    todate = forms.DateField()

    class Meta:
        model = Dates

    def clean(self):
        form_fromdate = self.cleaned_data.get('fromdate')
        form_todate = self.cleaned_data.get('todate')
        between = Dates.objects.filter(fromdate__gte=form_fromdate, todate__lte=form_todate).exists()
        if between:
            raise forms.ValidationError("Period already between this date 1")
        super(Form, self).clean()

#index.html
<html>
<head>
</head>
<body>
<form action="" method="POST">
    {% csrf_token %}
    {%  if form.errors %}
        errors: {{ form.errors }}
    {% endif %}
    {{ form }}
    <input type="submit" value="submit">
</form>
</body>
</html>
于 2012-10-23T13:41:40.307 回答