Flask处理Web表单的实现方法

from flask import Flask,render_template,request

@app.route('/login',methods=['GET','POST'])
def login():
  if request.method == 'POST':
    username = request.form['username']
    password = request.form['password']
    print username,password
  return render_template('login.html',method=request.method)123456789

app.config['SECRET_KEY'] = 'SECRET_KEY'1

 #设置csrf_token
 {{ form.csrf_token() }}
 {{ form.us.label }}
 
{{ form.us }}
 {{ form.ps.label }}
 
{{ form.ps }}
 {{ form.ps2.label }}
 
{{ form.ps2 }}
 
{{ form.submit() }}
 {% for x in get_flashed_messages() %}
   {{ x }}
 {% endfor %}
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视图函数
#coding=utf-8
from flask import Flask,render_template,\
  redirect,url_for,session,request,flash

#导入wtf扩展的表单类
from flask_wtf import FlaskForm
#导入自定义表单需要的字段
from wtforms import SubmitField,StringField,PasswordField
#导入wtf扩展提供的表单验证器
from wtforms.validators import DataRequired,EqualTo
app = Flask(__name__)
app.config['SECRET_KEY']='1'

#自定义表单类，文本字段、密码字段、提交按钮
class Login(FlaskForm):
  us = StringField(label=u'用户名',validators=[DataRequired()])
  ps = PasswordField(label=u'密码',validators=[DataRequired(),EqualTo('ps2','err')])
  ps2 = PasswordField(label=u'确认密码',validators=[DataRequired()])
  submit = SubmitField(u'提交')

@app.route('/login')
def login():
  return render_template('login.html')

#定义根路由视图函数，生成表单对象，获取表单数据，进行表单数据验证
@app.route('/',methods=['GET','POST'])
def index():
  form = Login()
  if form.validate_on_submit():
    name = form.us.data
    pswd = form.ps.data
    pswd2 = form.ps2.data
    print name,pswd,pswd2
    return redirect(url_for('login'))
  else:
    if request.method=='POST':
      flash(u'信息有误，请重新输入！')
    print form.validate_on_submit()

  return render_template('index.html',form=form)
if __name__ == '__main__':
  app.run(debug=True)