- 显示所有评论
{% for foo in ques.comments %} - 所有评论排序
uquestion = db.relationship('Question', backref=db.backref('comments', order_by=creat_time.desc)) - 显示评论条数
{{ ques.comments|length }} - 完成个人中心
1.个人中心的页面布局(html文件及相应的样式文件)
2.定义视图函数def usercenter(user_id):
3.向前端页面传递参数
4.页面显示相应数据
发布的全部问答
发布的全部评论
个人信息
5.各个页面链接到个人中心
from flask import Flask from flask_sqlalchemy import SQLAlchemy import config from flask import Flask, render_template, request, redirect, url_for,session from functools import wraps from datetime import datetime app = Flask(__name__) app.config.from_object(config) db = SQLAlchemy(app) #登录的数据库 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)) db.create_all() #问题页的数据库 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('questions')) db.create_all() class Comment(db.Model): __tablename__ = 'comment' id = db.Column(db.Integer, primary_key=True, autoincrement=True) author_id = db.Column(db.Integer, db.ForeignKey('user.id')) question_id=db.Column(db.Integer, db.ForeignKey('question.id')) detail = db.Column(db.Text, nullable=False) creat_time = db.Column(db.DateTime, default=datetime.now) question=db.relationship('Question',backref=db.backref('comments',order_by=creat_time.desc)) author = db.relationship('User', backref=db.backref('comments')) db.create_all() # user=User(username='mis1',password='11111') # db.session.add(user) # db.session.commit() @app.route('/') def base(): return render_template('base.html') # 调用数据库把用户评论放在首页 @app.route('/index/') def index(): context = { 'questions':Question.query.order_by('-creat_time').all() } 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') passw = request.form.get('password') user = User.query.filter(User.username == usern).first() if user: if user.password==passw: session['user'] = usern session.permanent = True return redirect(url_for('base')) else: return u'password error' else: return u'password is not existed' @app.route('/regist/',methods=['GET','POST']) def regist(): if request.method=='GET': return render_template('regist.html') else: usern=request.form.get('username') passw=request.form.get('password') nickn=request.form.get('nickname') user=User.query.filter(User.username==usern).first() if user: return u'username existed' else: user=User (username=usern,password=passw,nickname=nickn) db.session.add(user) db.session.commit() return redirect(url_for('login')) 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#发布前登录,python装饰器 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')) # 评论页的详细页 @app.route('/detail/<question_id>') def detail(question_id): quest = Question.query.filter(Question.id == question_id).first() return render_template('detail.html', ques=quest) #评论功能 @app.route('/comment/',methods=['POST']) @loginFirst#发布前登录,python装饰器 def comment(): detail = request.form.get('fabu') author_id = User.query.filter(User.username == session.get('user')).first().id quest_id =request.form.get('question_id') pinglun = Comment(question_id=quest_id,detail=detail, author_id=author_id) db.session.add(pinglun) db.session.commit() return redirect(url_for('detail',question_id=quest_id)) #个人信息页 @app.route('/usercenter/<user_id>') def usercenter(user_id): user=User.query.filter(User.id== user_id).first() context={ 'user':user } # 'username':user.username, # 'questions':user.questions, # 'comment':user.comments return render_template('usercenter.html',**context) @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')) if __name__ == '__main__': app.run(debug=True)
{% extends 'base.html' %} {% block title %} 个人信息页 {% endblock %} {% block head %} <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.2/css/bootstrap.min.css" integrity="sha384-PsH8R72JQ3SOdhVi3uxftmaW6Vc51MKb0q5P2rRUpPvrszuE4W1povHYgTpBfshb" crossorigin="anonymous"> {% endblock%} {% block main %} <br> <br> <div class="card" style="width:50rem; margin:0 auto"> <ul class="list-group list-group-flush"> <h3>全部问答</h3> {% for foo in user.questions %} <li class="list-group-item"> <span class="icon" aria-hidden="true"></span> <br> <h3><img src="../static/image/yezi.jpg" width="20" height="20"> <a href="{{ url_for('detail',question_id=foo.id) }}">{{ foo.title }}</a></h3> <p>{{ foo.detail }}</p> <span class="badge"style="float:right">{{ foo.creat_time}}</span> <img src="../static/image/touxiang.jpg" width="20" height="20"> <a href="{{ url_for('usercenter',user_id=foo.author.id) }}">{{ foo.author.username}}</a> </li> {% endfor %} </ul> </div> <br> <br> <div class="card" style="width:50rem; margin:0 auto"> <ul class="list-group list-group-flush"> <h3>全部评论</h3> {% for foo in user.comments %} <li class="list-group-item"> <span class="icon" aria-hidden="true"></span> <br> <h3><img src="../static/image/yezi.jpg" width="20" height="20"> <a href="{{ url_for('detail',question_id=foo.id) }}">{{ foo.title }}</a></h3> <p>{{ foo.detail }}</p> <span class="badge"style="float:right">{{ foo.creat_time}}</span> <img src="../static/image/touxiang.jpg" width="20" height="20"> <a href="">{{ foo.author.username}}</a> </li> {% endfor %} </ul> </div> <br> <br> <div class="card" style="width:50rem; margin:0 auto"> <h3>{{ username }}个人信息</h3> <ul class="list-group list-group-flush"> <li class="list-group-item"> <span class="icon" aria-hidden="true"> 用户:{{ user.username }}<br> 编号:{{ user.id }}<br> 昵称:{{ user.nickname }}<br> 文章篇数:{{ user.questions|length }} </span> </li> </ul> </div> {% endblock %}