制作首页的显示列表。

Posted 2020-10-16 dream higher

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篇首语：本文由小常识网(cha138.com)小编为大家整理，主要介绍了制作首页的显示列表。相关的知识，希望对你有一定的参考价值。

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>

</ul>

{% extends\'base.html\' %}
    {% block title %}
    首页
    {% endblock %}
{% block head %}

    <script src="{{url_for(\'static\',filename=\'js/base.js\') }}" type="text/javascript"></script>
    <link href="{{ url_for(\'static\' ,filename=\'css/base.css\') }}"  rel="stylesheet" type="text/css">
    {% endblock %}
    {% block main %}
</head>
<body id="myBody">
        <div id="gufeng">
       <ul class="list" >
           <li class="">用户名:{{ user }}</li>
           <li class="">问题:{{ question }}</li>
           <li class="">时间:{{ time }}</li>
       </ul>
   </div>
    <footer>
        <div class="footer_box">
            Copyright@2017-2027 个人版权，版权所有 作者：JZX telephone:0000-1234567 mobile phone:11111111111
        </div>
    </footer>
{% endblock %}
</body>
</html>

2. 用字典向index.html传递参数。

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

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

class User(db.Model):
    __table__name = \'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)
    nickname = db.Column(db.String(50))

class Question(db.Model):
    __tablename__ = \'question\'
    id = db.Column(db.Integer, primary_key=True, autoincrement=True)
    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_id = db.Column(db.Integer, db.ForeignKey(\'user.id\'))
    author = db.relationship(\'User\', backref=db.backref(\'question\'))
#db.create_all()

@app.route(\'/\')
def index():
    context={
        \'user\':\'GuFeng\',
        \'question\':\'喜欢古风？\',
        \'time\':\'2017年12月1日\'
    }
    return render_template(\'index.html\',**context)

@app.route(\'/zhuce/\',methods=[\'GET\',\'POST\'])
def zhuce():
    if request.method ==\'GET\':
        return  render_template(\'zhuce.html\')
    else:
        usern = request.form.get(\'name\')
        teln = request.form.get(\'password\')
        passw = request.form.get(\'password1\')
        user = User.query.filter(User.username==usern).first()
        if user:
            return \'username existed\'
        else:
            user= User(username=usern,tel=teln,password=passw)
            db.session.add(user)
            db.session.commit()
            return redirect(url_for(\'login\'))

@app.route(\'/login/\', methods=[\'GET\',\'POST\'])
def login():
    if request.method == \'GET\':
        return render_template(\'login.html\')
    else:
        username = request.form.get(\'username\')
        password = request.form.get(\'password\')
        user = User.query.filter(User.username == username).first()
        if user:
            if user.password ==password:
                session[\'user\'] = username
                return redirect(url_for(\'index\'))
            else:
                return u\'password error\'
        else:
            return u\'username is not existed\'

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

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

def loginFirst(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(\'/question/\',methods=[\'GET\',\'POST\'])
@loginFirst
def question():
    if request.method == \'GET\':
        return render_template(\'question.html\')
    else:
        title = request.form.get(\'title\')
        detail = request.form.get(\'detail\')
        author_id = User.query.filter(User.username == session.get(\'user\')).first().id
        question = Question(title=title, detail=detail, author_id=author_id)
        db.session.add(question)
        db.session.commit()
    return redirect(url_for(\'index\'))

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