制作首页的显示列表

1. 在首页添加显示问答的列表，并定义好相应的样式。

无序列表

<ul >

  <li>Coffee</li>

  <li>Tea</li>

  <li>Milk</li>

</ul>

2. 用字典向index.html传递参数。

python代码

from flask import Flask, render_template, request, redirect, url_for, session
from flask_sqlalchemy import SQLAlchemy
from functools import wraps
from datetime import datetime
import config

app = Flask(__name__)
app.config.from_object(config)
db = SQLAlchemy(app)


class User(db.Model):
    __tablename__ = 'user'
    id = db.Column(db.Integer, primary_key=True, autoincrement=True)
    Username = db.Column(db.String(20), nullable=False)
    Password = db.Column(db.String(20), nullable=False)
    Telphone = db.Column(db.String(20), nullable=True)


class Question(db.Model):
    __tablename__ = 'question'
    id = db.Column(db.Integer, primary_key=True, autoincrement=True)
    author_id = db.Column(db.Integer,db.ForeignKey('user.id'))
    title = db.Column(db.String(100), nullable=False)
    detail = db.Column(db.Text, nullable=False)
    creat_time = db.Column(db.DateTime, default=datetime.now)
    author = db.relationship('User', backref=db.backref('question'))
# db.create_all()

@app.route('/',methods=['GET','POST'])
def index():
    context = {
         'title':'魔法引力蛋糕难吃',
          'create_time': '2017-12-1 11：53',
          'author': 'yangmi',
          'detail': '这款蛋糕又贵又难吃，建议买鬼马小精灵蛋糕，好看好吃'
    }
    return render_template('index.html',**context)

@app.route('/login/', methods=['GET', 'POST'])
def login():
    if request.method == 'GET':
        return render_template('login.html')
    else:
        usern = request.form.get('Username')
        passn = request.form.get('Password')
        user = User.query.filter(User.Username == usern).first()
        if user:
            if user.Password == passn:
                session['user'] = usern
                return redirect(url_for('index'))
            else:
                return '密码错误'
                # return window.alert("密码错误")
        else:
            # return window.alert("用户名不存在")
            return '用户名不存在'


@app.context_processor
def mycontext():
    usern = session.get('user')
    if usern:
        return {'Username': usern}
    else:
        return {}


def login_re(func):
    @wraps(func)
    def wrapper(*args, **kwargs):
        if session.get('user'):
            return func(*args, **kwargs)
        else:
            return redirect(url_for('login'))

    return wrapper


@app.route('/logout/')
def logout():
    session.clear()
    return redirect(url_for("index"))


@app.route('/register/', methods=['GET', 'POST'])
def register():
    if request.method == 'GET':
        return render_template('register.html')
    else:
        usern = request.form.get('Username')
        passn = request.form.get('Password')
        teln = request.form.get('Telphone')
        user = User.query.filter(User.Username == usern).first()
        if user:
            return '用户名已经存在'
        else:
            user1 = User(Username=usern, Password=passn, Telphone=teln)
            db.session.add(user1)
            db.session.commit()
            return redirect(url_for('login'))


@app.route('/question/', methods=['GET', 'POST'])
@login_re
def question():
    if request.method == 'GET':
        return render_template('question.html')
    else:
        an = User.query.filter(User.Username == session.get('user')).first().id
        tn= request.form.get('title')
        dn = request.form.get('detail')
        question1 = Question(author_id=an,title=tn, detail=dn)
        # question.author=User
        db.session.add(question1)  # 数据库，添加操作
        db.session.commit() #提交
    return redirect(url_for('index'))



if __name__ == '__main__':
    app.run(debug=True)