上面是没有调用cleaned_data的提交结果,可见模版直接把form里面的整个标签都接收过来了
下面是调用cleaned_data 的结果
django 的表单,提交上来之后是这样的:
#coding: gb2312 from django import forms class ContactForm(forms.Form): subject = forms.CharField(max_length=10,label='subject')#设置最大长度为10 email = forms.EmailField(required=False,label='Email')#非必要字段 message = forms.CharField(widget=forms.Textarea,label='message')#指定form中组件的类型 #自定义校验规则,该方法在校验时被系统自动调用,次序在“字段约束”之后 def clean_message(self): message = self.cleaned_data['message']#能到此处说明数据符合“字段约束”要求 num_words = len(message.split()) if num_words < 1:#单词个数 raise forms.ValidationError("your word is too short!") return message
比如下面这句:
email = forms.EmailField(required=False,label=‘Email‘)#非必要字段
其实可以作为非必要字段,required=False
由于调用form.cleaned_data#只有各个字段都符合要求时才有对应的cleaned_data,之前好像必须得:
if form.is_valid():#说明各个字段的输入值都符合要求
所以上述字段required=False,在测试东西或者自己写东西,等安全性不高的场合就比较必要了
#coding: gb2312 from django.http import HttpResponse import datetime,calendar import time from django.http import HttpResponse from django.template import Context from django.template.loader import get_template from django.http import HttpResponse, Http404 from django.contrib.auth.models import User from django.shortcuts import render_to_response from django.http import HttpResponseRedirect from django.contrib.auth import logout from django.template import RequestContext from django.core.urlresolvers import reverse from django.shortcuts import redirect #from django import form from django.shortcuts import render from .forms import ContactForm #from django.shortcuts import render_to_response #from django_manage_app.forms import ContactForm def current_datetime(request): now = time.strftime('%Y-%m-%d-%H-%M-%S',time.localtime(time.time())) html = '<html><body>It is now %s.</body></html>' %now return HttpResponse(html) def show_readme(request): if request.method == 'POST':#提交请求时才会访问这一段,首次访问页面时不会执行 form = ContactForm(request.POST) print (form['subject']) print (form['email']) print (form['message']) print ("show ----------------") #“首次访问”和“提交的信息不符合要求”时被调用 return render_to_response('show.html', {'form': form}) def contact_author(request): if request.method == 'POST':#提交请求时才会访问这一段,首次访问页面时不会执行 form = ContactForm(request.POST) if form.is_valid():#说明各个字段的输入值都符合要求 cd = form.cleaned_data#只有各个字段都符合要求时才有对应的cleaned_data #print (form.cleaned_data()) print (cd['subject']) print (cd['email']) print (cd['message']) #return render_to_response('contact_author.html', {'form': form}) #return redirect(reverse('','show_readme.html')) #return HttpResponseRedirect('/thanks/') return render_to_response('show_readme.html', {'form': cd}) #此处逻辑应该是先生成新的预览页面,再保存为txt #return response else:#首次访问该url时没有post任何表单 form = ContactForm()#第一次生成的form里面内容的格式 print (form) print (form.is_valid()) #“首次访问”和“提交的信息不符合要求”时被调用 return render_to_response('contact_author.html', {'form': form}) #return render_to_response('show.html', {'form': form}) def thanks(request): return render_to_response('thanks.html') def download_file(request): #from django.http import HttpResponse ## CSV #import csv #response = HttpResponse(mimetype='text/csv') #response['Content-Disposition'] = 'attachment; filename=my.csv' #writer = csv.writer(response) #writer.writerow(['First row', 'Foo', 'Bar', 'Baz']) #writer.writerow(['Second row', 'A', 'B', 'C', '"Testing"', "Here's a quote"]) # Text file response = HttpResponse(content_type='text/plain') response['Content-Disposition'] = 'attachment; filename=my.txt' response.write("aa\n") response.write("bb") # PDF file #http://code.djangoproject.com/svn/django/branches/0.95-bugfixes/docs/outputting_pdf.txt #from reportlab.pdfgen import canvas #need pip ind #response = HttpResponse()#)mimetype='application/pdf') #response['Content-Disposition'] = 'attachment; filename=somefilename.pdf' #p = canvas.Canvas(response) #p.drawString(100, 100, "Hello world.") #p.showPage() #p.save() #response = HttpResponse() fout=open("mysite//test.txt","wt") str = "hello world" fout.write(str) fout.close() #response['Content-Disposition'] = 'attachment; filename=test.txt' data = open("mysite//test.txt", "rb").read() html = '<html><body>%s</body></html>' %str return response#HttpResponse(data, content_type="text/plain")
提交给模版的html:
<html> <style type="text/css"> .field{ background-color:#BCD8F5; } </style> <head> <title>show readme</title> </head> <body> <!<div class="field"> {{ form.subject }} {{ form.email }} {{ form.message }} <!</div> </body> </html>
时间: 2024-10-10 07:43:50