Python3.4 + Django1.7.7 搭建简单的表单并提交
Python3.4 + Django1.7.7 搭建简单的表单并提交
流川疯
发布于 2019-01-18 15:18:32
发布于 2019-01-18 15:18:32
后面还有一个问题，是我把txt生成了，但是网页没有返回我还不知道，现在怎么直接返回txt并且展示出来txt 的内容，希望大牛不吝赐教
首先有一个问题
django1.7之前，这样用：
HttpResponse(simplejson.dumps({“status”: ‘200’, “message”:u’登录成功’}), mimetype=’application/json’)
没问题，但是django1,7之后就报错了，查了下问题发现应该这样用：
HttpResponse(simplejson.dumps({“status”: ‘200’, “message”:u’登录成功’}), content_type=’application/json’)
html模版：
<html>
<style type="text/css">
{# <ul class="errorlist">。。。</ul> #}
{# ul标签下的class="errorlist"的属性进行渲染 #}{# 标签下的属性 #}
ul.errorlist {
margin: 0;
padding: 0;
}
{# <ul class="errorlist"><li>单词个数低于4个!</li></ul> #}
{# errorlist class下的 li标签内的元素进行渲染 #}{# 属性下一级的标签 #}
.errorlist li {
background-color: red;
color: white;
display: block;
font-size: 10px;
margin: 0 0 3px;
padding: 4px 5px;
}
.field{
background-color:#BCD8F5;
}
</style>
<head>
<title>Contact us</title>
</head>
<body>
{% if form.errors %}
<p style="color: red;">
Please correct the error{{ form.errors|pluralize }} below.
</p>
{% endif %}
<form action="" method="post">
<div class="field">
This is a brief description of Interim Fix ：
{# 自动生成的默认错误信息显示 #}
{# 会被翻译成：<ul class="errorlist"><li>这个字段是必填项。</li></ul> #}
{{ form.subject.errors }}
<label for="id_subject">12</label>
{{ form.subject }}
{# 自定义的错误信息显示 #}
{% if form.subject.errors%}
<label for="id_self_def_error_info" style="color: red;">
*自定义错误信息：主题不能为空
</label>
{% endif %}
</div>
<div class="field">
{{ form.email.errors }}
<label for="id_email"> for IBM SPSS Data Collection DDL 7 ("Software").</label>
{{ form.email }}
</div>
<div class="field">
{{ form.message.errors }}
<label for="id_message">页面中自定义的信息:</label>
{{ form.message }}
</div>
<input type="submit" value="提交">
</form>
</body>
</html>form.py
#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 < 0:#单词个数
raise forms.ValidationError("your word is too short!")
return messageviews.py
#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 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 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 HttpResponseRedirect('/thanks/')
else:#有部分字段不符合要求，会有error相关信息给加到form中去，需要覆盖掉
#print (form)
print ('The data does not meet the requirements')
print (form['subject'].errors)
print (form['email'].errors)
print (form['message'].errors)
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})
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 #要是返回txt放开这部分代码 return response
#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 install reportlab
#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 HttpResponse(data, content_type="text/plain")参考文献：
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原始发表：2015年04月17日，如有侵权请联系 cloudcommunity@tencent.com 删除
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