Created a basic Flask microblog app from a tutorial
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commit
b10e58d40c
8 changed files with 147 additions and 0 deletions
2
.gitignore
vendored
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.gitignore
vendored
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config.py
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__pycache__
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57
flask_site.py
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57
flask_site.py
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import sqlite3
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from flask import Flask, request, session, g, redirect, url_for, \
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abort, render_template, flash
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app = Flask(__name__)
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app.config.from_pyfile('config.py')
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def connect_db():
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return sqlite3.connect(app.config['DATABASE'])
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@app.before_request
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def before_request():
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g.db = connect_db()
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@app.teardown_request
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def teardown_request(exception):
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db = getattr(g, 'db', None)
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if db is not None:
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db.close()
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@app.route('/')
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def show_entries():
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cur = g.db.execute('select title, text from entries order by id desc')
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entries = [dict(title=row[0], text=row[1]) for row in cur.fetchall()]
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return render_template('show_entries.html', entries=entries)
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@app.route('/add', methods=['POST'])
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def add_entry():
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if not session.get('logged_in'):
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abort(401)
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g.db.execute('insert into entries (title, text) values (?, ?)',
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[request.form['title'], request.form['text']])
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g.db.commit()
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flash('New entry was successfully posted')
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return redirect(url_for('show_entries'))
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@app.route('/login', methods=['GET', 'POST'])
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def login():
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error = None
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if request.method == 'POST':
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if request.form['username'] != app.config['USERNAME']:
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error = 'Invalid username'
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elif request.form['password'] != app.config['PASSWORD']:
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error = 'Invalid password'
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else:
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session['logged_in'] = True
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flash('You were logged in')
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return redirect(url_for('show_entries'))
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return render_template('login.html', error=error)
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@app.route('/logout')
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def logout():
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session.pop('logged_in', None)
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flash('You were logged out')
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return redirect(url_for('show_entries'))
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if __name__ == '__main__':
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app.run()
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install.py
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install.py
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from flask_site import *
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from contextlib import closing
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def init_db():
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with closing(connect_db()) as db:
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with app.open_resource('schema.sql', mode='r') as f:
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db.cursor().executescript(f.read())
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db.commit()
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if __name__ == "__main__":
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init_db()
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schema.sql
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7
schema.sql
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drop table if exists entries;
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create table entries (
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id integer primary key autoincrement,
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title text not null,
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text text not null
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);
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18
static/css/style.css
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static/css/style.css
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body { font-family: sans-serif; background: #eee; }
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a, h1, h2 { color: #377ba8; }
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h1, h2 { font-family: Georgia, serif; margin: 0; }
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h1 { border-bottom: 2px solid #eee; }
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h2 { font-size: 1.2em; }
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.page { margin: 2em auto; width: 35em; border: 5px solid #ccc;
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padding: 0.8em; background: white; }
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.entries { list-style: none; margin: 0; padding: 0; }
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.entries li { margin: 0.8em 1.2em; }
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.entries li h2 { margin-left: -1em; }
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.add-entry { font-size: 0.9em; border-bottom: 1px solid #ccc; }
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.add-entry dl { font-weight: bold; }
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.metanav { text-align: right; font-size: 0.8em; padding: 0.3em;
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margin-bottom: 1em; background: #fafafa; }
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.flash { background: #cee5F5; padding: 0.5em;
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border: 1px solid #aacbe2; }
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.error { background: #f0d6d6; padding: 0.5em; }
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14
templates/login.html
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templates/login.html
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{% extends "master.html" %}
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{% block body %}
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<h2>Login</h2>
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{% if error %}<p class=error><strong>Error:</strong> {{ error }}{% endif %}
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<form action="{{ url_for('login') }}" method=post>
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<dl>
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<dt>Username:
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<dd><input type=text name=username>
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<dt>Password:
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<dd><input type=password name=password>
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<dd><input type=submit value=Login>
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</dl>
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</form>
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{% endblock %}
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17
templates/master.html
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templates/master.html
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<!doctype html>
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<title>Flask Site</title>
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<link rel=stylesheet type=text/css href="{{ url_for('static', filename='css/style.css') }}">
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<div class=page>
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<h1>Flask Site</h1>
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<div class=metanav>
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{% if not session.logged_in %}
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<a href="{{ url_for('login') }}">log in</a>
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{% else %}
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<a href="{{ url_for('logout') }}">log out</a>
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{% endif %}
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</div>
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{% for message in get_flashed_messages() %}
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<div class=flash>{{ message }}</div>
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{% endfor %}
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{% block body %}{% endblock %}
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</div>
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21
templates/show_entries.html
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templates/show_entries.html
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{% extends "master.html" %}
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{% block body %}
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{% if session.logged_in %}
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<form action="{{ url_for('add_entry') }}" method=post class=add-entry>
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<dl>
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<dt>Title:
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<dd><input type=text size=30 name=title>
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<dt>Text:
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<dd><textarea name=text rows=5 cols=40></textarea>
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<dd><input type=submit value=Share>
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</dl>
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</form>
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{% endif %}
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<ul class=entries>
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{% for entry in entries %}
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<li><h2>{{ entry.title }}</h2>{{ entry.text|safe }}
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{% else %}
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<li><em>Unbelievable. No entries here so far</em>
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{% endfor %}
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</ul>
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{% endblock %}
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