製做首頁的顯示列表。

時間 2019-12-08

標籤製做首頁顯示列表简体版

原文原文鏈接

1. 在首頁添加顯示問答的列表，並定義好相應的樣式。css

無序列表html

<ul >sql

<li>Coffee</li>flask

<li>Tea</li>bootstrap

<li>Milk</li>session

</ul>app

2. 用字典向index.html傳遞參數。ui

index.pyurl

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

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)
    nickname = db.Column(db.String(20))

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 shouye():
    context={
        'question':'hahahahahahahahahaa'
    }
    return render_template('shouye.html',**context)


@app.route('/zhuce',methods=['GET','POST'])
def zhuce():
    if request.method == 'GET':
        return render_template('zhuce.html')
    else:
        username = request.form.get('username')
        password = request.form.get('password')
        nickname = request.form.get('nickname')
        user1 = User.query.filter(User.username == username).first()
    if user1:
        return 'username existed'
    else:
        user1 = User(username=username, password=password, nickname=nickname)
        db.session.add(user1)
        db.session.commit()
        return redirect(url_for('denglu'))



@app.route('/denglu',methods=['GET','POST'])
def denglu():
    if request.method == 'GET':
        return render_template('denglu.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
            session.permanent = True
            return redirect(url_for('shouye'))
        else:
            return 'password error'
    else:
        return 'username is not existed'



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



def log(func):
    @wraps(func)
    def wrapper(*args,**kwargs):
        if session.get('user'):
            return  func(*args,**kwargs)
        else:
            return render_template('denglu.html')
    return wrapper




@app.route('/neirong',methods=['GET','POST'])
@log
def fankui():
    if request.method=='GET':
        return render_template('fankui.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('shouye'))


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



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

shouye.htmlspa

<!DOCTYPE html>
<html lang="en">
<head>
    {% extends "text.html" %}
    <meta charset="UTF-8">
    <link href="https://cdn.bootcss.com/bootstrap/4.0.0-beta/css/bootstrap.css" rel="stylesheet">
    <link href="https://cdn.bootcss.com/font-awesome/4.7.0/css/font-awesome.css" rel="stylesheet">
    <title>首頁</title>
</head>
<body>
{% block shouye %}
<form class="">
<ul class="list-group list-group-item-light p-3 border border-secondary rounded-top" style="margin-top: 6.2% ; margin-left: 25%;width: 50%; ">
  <li class="list-group-item rounded m-1" style="height: 10ch">
    <span>
        <a href="#">username</a>
        <a href="#">title</a>
        <span class="">creat_time</span>
        <p>detail{{ question }}</p>
    </span>
  </li>
</ul>
</form>
{% endblock %}
</body>
</html>

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