Flask form (Flask-WTF) and flask form flask-wtf

Flask form (Flask-WTF) and flask form flask-wtf

1. request. from: Get POST form data

# Hello. py

1 # coding: UTF-8 2 3 from flask import Flask, request, render_template 4 5 app = Flask (_ name _) 6 7 @ app. route ('/', methods = ['get']) # methods is a list of 8 def home (): 9 return render_template('home.html ') 10 11 @ app. route ('/signin', methods = ['get']) 12 def signin_form (): 13 return render_template('form.html') 14 15 @ app. route ('/signin', methods = ['post']) 16 def signin (): 17 username = request. form ['username'] 18 password = request. form ['Password'] 19 if username = 'admin' and password = 'Password': 20 return render_template('signin-ok.html ', username = username) 21 else: 22 return render_template('form.html ', message = 'user name or Password error. Please log in again> ', username = username) 23 24 25 if _ name _ =' _ main __': 26 app. run ()

# Form.html

1 <! DOCTYPE html> 2 
 
# Home.html
1 <! DOCTYPE html> 2 
#Signin-ok.html
1 <! DOCTYPE html> 2 
2. Use Flask-WTF Extension
# Hello. py
1 # coding: UTF-8 2 3 from flask import Flask, render_template 4 from flask. ext. bootstrap import Bootstrap 5 from flask. ext. wtf import Form 6 from wtforms import StringField, SubmitField 7 from wtforms. validators import Required 8 9 app = Flask (_ name _) 10 app. config ['secret _ key'] = 'hard to guess string '11 bootstrap = Bootstrap (app) 12 13 14 class NameForm (Form ): 15 name = StringField ('What is your name? ', Validators = [Required ()]) 16 submit = SubmitField ('submit') 17 18 @ app. route ('/', methods = ['get', 'post']) 19 def index (): 20 name = None21 form = NameForm () 22 if form. validate_on_submit (): 23 name = form. name. data # does not have this step. name = None24 form after submit. name. data = ''# If this step is not completed, the text box after the submit operation leaves the last input text 25 return render_template('index.html ', form = form, name = name) 26 27 if _ name _ = '_ main _': 28 app. run ()
# Index. py
1 {% extends "base.html" %} 2 {% import "bootstrap/wtf.html" as wtf %} 3 4 {% block title %} Flasky {% endblock %} 5 6 {% block page_content %} 7 <div class = "page-header"> 8 
Appendix: common basic templates
# Base.html
 1 {% extends "bootstrap/base.html" %} 2 {% block title %}Flasky{% endblock %} 3  4 {% block navbar %} 5 <div class="navbar navbar-inverse" role="navigation"> 6 <div class="container"> 7     <div class="navbar-header"> 8         <button type="button" class="navbar-toggle" data-toggle="collapse" data-target=".navbar-collapse"> 9             <span class="sr-only">Toggle navigation</span>10             <span class="icon-bar"></span>11             <span class="icon-bar"></span>12             <span class="icon-bar"></span>13         </button>14         <a class="navbar-brand" href="/">Flasky</a>15 16     </div>17     <div class="navbar-collapse collapse">18         <ul class="nav navbar-nav">19             <li><a href="/">Home</a></li>20             <li><a href="/">Twitter</a></li>21             <li><a href="/">Blog</a></li>22         </ul>23     </div>24 </div>25 </div>26 {% endblock %}27 28 29 {% block content %}30 <div class="container">31     <div class="page-header">32         {% block page_content %}{% endblock %}33     </div>34 </div>35 36 {% endblock %}