Index.html
<!DOCTYPE html>
<html>
<head>
<link href="/static/css/style.css" rel="stylesheet">
<script src="http://code.jquery.com/jquery-2.0.3.min.js"></script>
<script type="text/javascript">
$(document).ready(function() {
$("#generate-string").click(function(e) {
$.post("/generator", {"length": $("input[name='length']").val()})
.done(function(string) {
$("#the-string").show();
$("#the-string input").val(string);
});
e.preventDefault();
});
$("#replace-string").click(function(e) {
$.ajax({
type: "PUT",
url: "/generator",
data: {"another_string": $("#the-string input").val()}
})
.done(function() {
alert("Replaced!");
});
e.preventDefault();
});
$("#delete-string").click(function(e) {
$.ajax({
type: "DELETE",
url: "/generator"
})
.done(function() {
$("#the-string").hide();
});
e.preventDefault();
});
});
</script>
</head>
<body>
<input type="text" value="8" name="length"/>
<button id="generate-string">Give it now!</button>
<div id="the-string">
<input type="text" />
<button id="replace-string">Replace</button>
<button id="delete-string">Delete it</button>
</div>
</body>
</html>
Code
import os, os.path import random import sqlite3 import string import time import cherrypy DB_STRING = "my.db" class StringGenerator(object): @cherrypy.expose def index(self): return open('index.html') @cherrypy.expose class StringGeneratorWebService(object): @cherrypy.tools.accept(media='text/plain') def GET(self): with sqlite3.connect(DB_STRING) as c: cherrypy.session['ts'] = time.time() r = c.execute("SELECT value FROM user_string WHERE session_id=?", [cherrypy.session.id]) return r.fetchone() def POST(self, length=8): some_string = ''.join(random.sample(string.hexdigits, int(length))) with sqlite3.connect(DB_STRING) as c: cherrypy.session['ts'] = time.time() c.execute("INSERT INTO user_string VALUES (?, ?)", [cherrypy.session.id, some_string]) return some_string def PUT(self, another_string): with sqlite3.connect(DB_STRING) as c: cherrypy.session['ts'] = time.time() c.execute("UPDATE user_string SET value=? WHERE session_id=?", [another_string, cherrypy.session.id]) def DELETE(self): cherrypy.session.pop('ts', None) with sqlite3.connect(DB_STRING) as c: c.execute("DELETE FROM user_string WHERE session_id=?", [cherrypy.session.id]) def setup_database(): """ Create the `user_string` table in the database on server startup """ with sqlite3.connect(DB_STRING) as con: con.execute("CREATE TABLE user_string (session_id, value)") def cleanup_database(): """ Destroy the `user_string` table from the database on server shutdown. """ with sqlite3.connect(DB_STRING) as con: con.execute("DROP TABLE user_string") if __name__ == '__main__': conf = { '/': { 'tools.sessions.on': True, 'tools.staticdir.root': os.path.abspath(os.getcwd()) }, '/generator': { 'request.dispatch': cherrypy.dispatch.MethodDispatcher(), 'tools.response_headers.on': True, 'tools.response_headers.headers': [('Content-Type', 'text/plain')], }, '/static': { 'tools.staticdir.on': True, 'tools.staticdir.dir': './public' } } cherrypy.engine.subscribe('start', setup_database) cherrypy.engine.subscribe('stop', cleanup_database) webapp = StringGenerator() webapp.generator = StringGeneratorWebService() cherrypy.quickstart(webapp, '/', conf)