/
flaskr_bash
executable file
·209 lines (168 loc) · 6.3 KB
/
flaskr_bash
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#!/bin/bash
#try to set settings so that user owns files, not root
#check out fabric
# A script to install Flask and create a "flaskr" blog
pip install Flask
echo "Before anything, Flask must be installed."
# make directories:
echo "First, we'll make the necessary directories. We'll make a \flaskr directory and both \static and \templates inside that \flaskr directory."
mkdir flaskr
cd flaskr
mkdir static
mkdir templates
echo "Now we'll create the database schema inside the flaskr directory we just created."
echo -e "drop table if exists entries;
create table entries (
id integer primary key autoincrement,
title string not null,
text string not null
);" >> schema.sql
echo "We'll now create a flaskr.py file and will write the application setup code to it."
echo -e "# -*- coding: utf-8 -*-
from __future__ import with_statement
from sqlite3 import dbapi2 as sqlite3
from contextlib import closing
from flask import Flask, request, session, g, redirect, url_for, abort, \
render_template, flash
# configuration
DATABASE = '/tmp/flaskr.db'
DEBUG = True
SECRET_KEY = 'development key'
USERNAME = 'admin'
PASSWORD = 'default'
# create our little application :)
app = Flask(__name__)
app.config.from_object(__name__)
app.config.from_envvar('FLASKR_SETTINGS', silent=True)
def connect_db():
"""Returns a new connection to the database."""
return sqlite3.connect(app.config['DATABASE'])
def init_db():
"""Creates the database tables."""
with closing(connect_db()) as db:
with app.open_resource('schema.sql') as f:
db.cursor().executescript(f.read())
db.commit()
@app.before_request
def before_request():
"""Make sure we are connected to the database each request."""
g.db = connect_db()
@app.teardown_request
def teardown_request(exception):
"""Closes the database again at the end of the request."""
if hasattr(g, 'db'):
g.db.close()
@app.route('/')
def show_entries():
cur = g.db.execute('select title, text from entries order by id desc')
entries = [dict(title=row[0], text=row[1]) for row in 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)
g.db.execute('insert into entries (title, text) values (?, ?)',
[request.form['title'], request.form['text']])
g.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__':
app.run()" >> flaskr.py
echo "We'll pipe the commands in the schema.sql file into the sqlite3 command"
sqlite3 ./flaskr.db < schema.sql
echo "Change directories to the templates directory now, where we'll put all of our html files"
cd templates
echo "Now we can write layout.html, show_entries.html and login.html to the templates directory."
echo -e "<!doctype html>
<title>Flaskr</title>
<link rel=stylesheet type=text/css href=\"{{ url_for('static', filename='style.css') }}\">
<div class=page>
<h1>Flaskr</h1>
<div class=metanav>
{% if not session.logged_in %}
<a href="{{ url_for('login') }}">log in</a>
{% else %}
<a href="{{ url_for('logout') }}">log out</a>
{% endif %}
</div>
{% for message in get_flashed_messages() %}
<div class=flash>{{ message }}</div>
{% endfor %}
{% block body %}{% endblock %}
</div>" >> layout.html
echo -e "{% extends "layout.html" %}
{% block body %}
{% if session.logged_in %}
<form action="{{ url_for('add_entry') }}" method=post class=add-entry>
<dl>
<dt>Title:
<dd><input type=text size=30 name=title>
<dt>Text:
<dd><textarea name=text rows=5 cols=40></textarea>
<dd><input type=submit value=Share>
</dl>
</form>
{% endif %}
<ul class=entries>
{% for entry in entries %}
<li><h2>{{ entry.title }}</h2>{{ entry.text|safe }}
{% else %}
<li><em>Unbelievable. No entries here so far</em>
{% endfor %}
</ul>
{% endblock %}" >> show_entries.html
echo -e "{% extends "layout.html" %}
{% block body %}
<h2>Login</h2>
{% if error %}<p class=error><strong>Error:</strong> {{ error }}{% endif %}
<form action="{{ url_for('login') }}" method=post>
<dl>
<dt>Username:
<dd><input type=text name=username>
<dt>Password:
<dd><input type=password name=password>
<dd><input type=submit value=Login>
</dl>
</form>
{% endblock %}" >> login.html
echo "Change to the static directory"
cd ../static
echo "Now we'll write our style.css file to the static directory so our blog will look nice."
echo -e "body { font-family: sans-serif; background: #eee; }
a, h1, h2 { color: #377BA8; }
h1, h2 { font-family: 'Georgia', serif; margin: 0; }
h1 { border-bottom: 2px solid #eee; }
h2 { font-size: 1.2em; }
.page { margin: 2em auto; width: 35em; border: 5px solid #ccc;
padding: 0.8em; background: white; }
.entries { list-style: none; margin: 0; padding: 0; }
.entries li { margin: 0.8em 1.2em; }
.entries li h2 { margin-left: -1em; }
.add-entry { font-size: 0.9em; border-bottom: 1px solid #ccc; }
.add-entry dl { font-weight: bold; }
.metanav { text-align: right; font-size: 0.8em; padding: 0.3em;
margin-bottom: 1em; background: #fafafa; }
.flash { background: #CEE5F5; padding: 0.5em;
border: 1px solid #AACBE2; }
.error { background: #F0D6D6; padding: 0.5em; }" >> style.css
echo "Now you're ready to run flaskr.py! If you go to your browser now and type "localhost:5000" into the address bar, you will see your Flaskr blog. Enjoy!"
cd ..
python flaskr.py