/
flask_news.py
141 lines (112 loc) · 3.43 KB
/
flask_news.py
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"""
Created by newming at 2018/10/2
"""
from datetime import datetime
from flask import Flask, render_template, redirect, url_for
from flask_sqlalchemy import SQLAlchemy
from forms import NewsForm
app = Flask(__name__)
app.config['SQLALCHEMY_DATABASE_URI'] = 'mysql://root:woaiwojia.@localhost:3306/net_news?charset=utf8'
app.config['SECRET_KEY'] = 'newming'
db = SQLAlchemy(app)
class News(db.Model):
# 表名称
__tablename__ = 'news'
# 各个字段
id = db.Column(db.Integer, primary_key=True)
title = db.Column(db.String(200), nullable=False)
content = db.Column(db.String(2000), nullable=False)
types = db.Column(db.String(10), nullable=False)
image = db.Column(db.String(300), )
author = db.Column(db.String(20), )
view_count = db.Column(db.Integer)
created_at = db.Column(db.DateTime)
is_valid = db.Column(db.Boolean, default=1)
def __repr__(self):
return '<News %r>' % self.title
# new_obj = News(
# title='标题1',
# content='内容',
# types='百家'
# )
# 创建表
# db.create_all()
# 插入数据
# db.session.add(new_obj)
# db.session.commit()
# 打印的结果格式是由上边 __repr__ 函数决定的，没有的话打印的就是内存地址
# print(News.query.all())
@app.route('/')
def index():
# 新闻首页
news_list = News.query.filter_by(is_valid=True)
return render_template('index.html', news_list=news_list)
@app.route('/cat/<name>')
def cat(name):
# 新闻类别
news_list = News.query.filter(News.types == name).filter(News.is_valid == True)
return render_template('cat.html', name=name, news_list=news_list)
@app.route('/detail/<int:pk>')
def detail(pk):
# 新闻详情信息
new_obj = News.query.get(pk)
return render_template('detail.html', pk=pk, new_obj=new_obj)
@app.route('/admin')
@app.route('/admin/<int:page>')
def admin(page = None):
# http://flask-sqlalchemy.pocoo.org/2.3/api/#flask_sqlalchemy.BaseQuery.paginate 分页
# 后台首页
if page is None:
page = 1
news_list = News.query.paginate(page=page, per_page=5)
# print(news_list.items)
return render_template('admin/index.html', news_list=news_list)
@app.route('/admin/update/<int:pk>', methods=('GET', 'POST'))
def update(pk):
# 更新
new_obj = News.query.get(pk)
if not new_obj:
return redirect(url_for('admin'))
# 将表单默认显示的值传入
form = NewsForm(obj=new_obj)
if form.validate_on_submit():
# 获取数据 -> 保存数据
new_obj.title = form.title.data
new_obj.content = form.content.data
new_obj.types = form.types.data
new_obj.image = form.image.data
new_obj.created_at = datetime.now()
db.session.add(new_obj)
db.session.commit()
return redirect(url_for('admin'))
return render_template('admin/update.html', form=form, pk=pk)
@app.route('/admin/add', methods=('GET', 'POST'))
def add():
# 新增
form = NewsForm()
if form.validate_on_submit():
# 获取数据 -> 保存数据
new_obj = News(
title=form.title.data,
content=form.content.data,
types=form.types.data,
image=form.image.data,
created_at=datetime.now()
)
db.session.add(new_obj)
db.session.commit()
return redirect(url_for('admin'))
return render_template('admin/add.html', form=form)
@app.route('/admin/delete/<int:pk>', methods=('GET', 'POST'))
def delete(pk):
new_obj = News.query.get(pk)
if not new_obj:
return 'no'
# 物理删除
# db.session.delete(new_obj)
new_obj.is_valid = False
db.session.add(new_obj)
db.session.commit()
return 'yes'
if __name__ == '__main__':
app.run(debug=True)