flask下，实现简单博客3
flask下，实现简单博客2
所有视图（views.py完整代码）：
# -*- coding: utf-8 -*-""" Flaskr ~~~~~~ A microblog example application written as Flask tutorial with Flask and sqlite3. :copyright: (c) 2010 by Armin Ronacher. :license: BSD, see LICENSE for more details."""from __future__ import with_statementfrom sqlite3 import dbapi2 as sqlite3from flask import Flask, request, session, g, redirect, url_for, abort, \ render_template, flash, _app_ctx_stack# 创建数据库DATABASE = 'blog.db'DEBUG = TrueSECRET_KEY = 'development key'USERNAME = 'admin'PASSWORD = '123' #初始化环境# create our little application :)app = Flask(__name__)app.config.from_object(__name__)app.config.from_envvar('FLASKR_SETTINGS', silent=True)#初始化数据库def init_db(): """Creates the database tables.""" with app.app_context(): db = get_db() with app.open_resource('schema.sql') as f: db.cursor().executescript(f.read()) db.commit()def get_db(): """Opens a new database connection if there is none yet for the current application context. """ top = _app_ctx_stack.top if not hasattr(top, 'sqlite_db'): sqlite_db = sqlite3.connect(app.config['DATABASE']) sqlite_db.row_factory = sqlite3.Row top.sqlite_db = sqlite_db return top.sqlite_db@app.teardown_appcontextdef close_db_connection(exception): """Closes the database again at the end of the request.""" top = _app_ctx_stack.top if hasattr(top, 'sqlite_db'): top.sqlite_db.close()@app.route('/')def show_entries(): db = get_db() cur = db.execute('select title, text from entries order by id desc') entries = cur.fetchall() return render_template('show_entries.html', entries=entries)@app.route('/add', methods=['POST'])def add_entry(): if not session.get('logged_in'): abort(401) db = get_db() db.execute('insert into entries (title, text) values (?, ?)', [request.form['title'], request.form['text']]) db.commit() flash('New entry was successfully posted') return redirect(url_for('show_entries'))@app.route('/login', methods=['GET', 'POST'])def login(): error = None if request.method == 'POST': if request.form['username'] != app.config['USERNAME']: error = 'Invalid username' elif request.form['password'] != app.config['PASSWORD']: error = 'Invalid password' else: session['logged_in'] = True flash('You were logged in') return redirect(url_for('show_entries')) return render_template('login.html', error=error)@app.route('/logout')def logout(): session.pop('logged_in', None) flash('You were logged out') return redirect(url_for('show_entries'))if __name__ == '__main__': init_db() app.run()