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Modern Web Application Frameworks
MASARYKOVA UNIVERZITA FAKULTA INFORMATIKY Û¡¢£¤¥¦§¨ª«¬Æ°±²³´µ·¸¹º»¼½¾¿Ý Modern Web Application Frameworks MASTER’S THESIS Bc. Jan Pater Brno, autumn 2015 Declaration Hereby I declare, that this paper is my original authorial work, which I have worked out by my own. All sources, references and literature used or ex- cerpted during elaboration of this work are properly cited and listed in complete reference to the due source. Bc. Jan Pater Advisor: doc. RNDr. Petr Sojka, Ph.D. i Abstract The aim of this paper was the analysis of major web application frameworks and the design and implementation of applications for website content ma- nagement of Laboratory of Multimedia Electronic Applications and Film festival organized by Faculty of Informatics. The paper introduces readers into web application development problematic and focuses on characte- ristics and specifics of ten selected modern web application frameworks, which were described and compared on the basis of relevant criteria. Practi- cal part of the paper includes the selection of a suitable framework for im- plementation of both applications and describes their design, development process and deployment within the laboratory. ii Keywords Web application, Framework, PHP,Java, Ruby, Python, Laravel, Nette, Phal- con, Rails, Padrino, Django, Flask, Grails, Vaadin, Play, LEMMA, Film fes- tival iii Acknowledgement I would like to show my gratitude to my supervisor doc. RNDr. Petr So- jka, Ph.D. for his advice and comments on this thesis as well as to RNDr. Lukáš Hejtmánek, Ph.D. for his assistance with application deployment and server setup. Many thanks also go to OndˇrejTom for his valuable help and advice during application development. -
Managing Data Constraints in Database-Backed Web Applications
Managing data constraints in database-backed web applications Junwen Yang Utsav Sethi Cong Yan University of Chicago, USA University of Chicago, USA University of Washington, USA [email protected] [email protected] [email protected] Alvin Cheung Shan Lu University of California, Berkeley University of Chicago, USA USA [email protected] [email protected] ABSTRACT Database-backed web applications manipulate large amounts of … <input value=‘title’ pattern=‘.+’ title=‘invalid title’/> persistent data, and such applications often contain constraints … that restrict data length, data value, and other data properties. Such constraints are critical in ensuring the reliability and usability of Field Type Null Default … these applications. In this paper, we present a comprehensive study on where data constraints are expressed, what they are about, how title varchar(30) NO NULL … often they evolve, and how their violations are handled. The re- sults show that developers struggle with maintaining consistent … data constraints and checking them across different components validates_length_of : title, maximum: 60, message: ‘title is too long’ Mysql::Error and versions of their web applications, leading to various prob- … lems. Guided by our study, we developed checking tools and API enhancements that can automatically detect such problems and Figure 1: Crossstack data constraints improve the quality of such applications. 1 INTRODUCTION 60 characters)” error; finally, she tried a title a little shorter than60 1.1 Motivation characters, but the web page then crashed with all the filled content Constraints are often associated with data used in software. These lost with some unreadable database error displayed. range from describing the expected length, value, uniqueness, and It turned out that different constraints were specified for the other properties of the stored data. -
AN INTRODUCTION by Enrique Canals / @Ecanals ENRIQUE CANALS
THE BEAUTY OF CSS PRE-PROCESSORS: AN INTRODUCTION by Enrique Canals / @ecanals ENRIQUE CANALS Software Developer @ The Hybrid Group Currently working with Sphero, creating cool things for connecting robots to the internet Worked on several interesting web projects with Pebble Current maintainer of the TextMate SCSS Bundle for syntax highlighting with support for Atom and Sublime @ecanals | www.enriquecanals.com WHAT WE'RE GOING TO COVER IN THIS SESSION PART 1 CSS basics and shortcomings What are CSS pre-processors How pre-processors work and don't work PART 2 Which one do I use? (Sass, Less, Stylus) Workflow Integration Using pre-processors in WordPress theme development PART 1 CSS BASICS AND SHORTCOMINGS BASIC CSS SYNTAX This is the CSS you're used to. html, body { width: 100%; height: 100%; overflow: hidden; } body { background-color: #fff; color: #000; line-height: 1; position: relative; } Simple enough. NOW SOMETHING A LITTLE MORE COMPLEX: .reveal.slide section, .reveal.linear section { -webkit-backface-visibility: hidden; backface-visibility: hidden; } .reveal .slides > section[data-transition=slide].past, .reveal.slide .slides > section:not([data-transition] -webkit-transform: translate(-150%, 0); -ms-transform: translate(-150%, 0); transform: translate(-150%, 0); } .reveal .slides > section[data-transition=slide].future, .reveal.slide .slides > section:not([data-transition] -webkit-transform: translate(150%, 0); -ms-transform: translate(150%, 0); transform: translate(150%, 0); } .reveal .slides > section > section[data-transition=slide].past, .reveal.slide .slides > section > section -webkit-transform: translate(0, -150%); -ms-transform: translate(0, -150%); transform: translate(0, -150%); } .reveal .slides > section > section[data-transition=slide].future, .reveal.slide .slides > section > section -webkit-transform: translate(0, 150%); -ms-transform: translate(0, 150%); transform: translate(0, 150%); } You can see how this get's ugly fast. -
Ruby Course --- an Immersive Programming Course ---0.5Em
Ruby Course — an immersive programming course — Sommercampus 2005 - Albert Ludwigs Universität Freiburg Brian Schröder [email protected] Licence Copyright c 2004-2006 Brian Schroeder Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled "GNU Free Documentation License". Part I Introduction Brian Schröder Ruby Course 2004 Simple hello world example This is a must 1 #!/usr/bin/ruby 2 3 puts ’Hello World’ 1 Hello World Brian Schröder Ruby Course 2004 Function definition Functions are defined using the def keyword 1 #!/usr/bin/ruby 2 3 def hello(programmer) 4 puts "Hello #{programmer}" 5 end 6 7 hello(’Brian’) 1 Hello Brian Brian Schröder Ruby Course 2004 In ruby everything is an object Everything is an object, so get used to the “.method” notation. 1 (5.6).round » 6 2 (5.6).class » Float 3 (5.6).round.class » Fixnum 4 5 ’a string’.length » 8 6 ’a string’.class » String 7 ’tim tells’.gsub(’t’, ’j’) »"jim jells" 8 9 ’abc’.gsub(’b’, ’xxx’).length » 5 10 11 [’some’, ’things’, ’in’, ’an’, ’array’].length » 5 12 [’some’, ’things’, ’in’, ’an’, ’array’].reverse » ["array", "an", "in", "things", "some"] 13 14 # You can even write 15 1.+(2) » 3 16 17 # but there is some sugar for cases like this 18 1 + 2 » 3 Brian Schröder Ruby Course 2004 Class definition and inheritance Base Class Sub Class 1 class Person 13 class Matz < Person 2 def initialize(name) 14 def initialize 3 @name = name 15 super(’Yukihiro Matsumoto’) 4 end 16 end 5 17 end 6 def greet 18 7 "Hello, my name is #{@name}." 19 puts Matz.new.greet 8 end 9 end 1 Hello, my name is Yukihiro Matsumoto. -
Sistema De Gestión De Información De Usuarios Y Resultados Para El Paquete Informático Genecodis
Proyecto de Sistemas Informáticos Curso académico 2008 / 2009 Sistema de gestión de información de usuarios y resultados para el paquete informático GeneCodis Autores Victor Acón Aceña Eva García Vega Profesor Director Alberto Pascual-Montano Dpto. de Arquitectura de Computadores y Automática Facultad de Informática. Universidad Complutense de Madrid Sistema de gestión de información de usuarios y resultados para el paquete 2008/09 informático GeneCodis Página 2 Sistema de gestión de información de usuarios y resultados para el paquete 2008/09 informático GeneCodis Resumen GeneCodis cuenta en la actualidad con una media de 500 trabajos reales provenientes de distintas partes del mundo, en especial de Europa, USA y Japón. Así mismo, el número de procesos realizados por el mismo usuario es también alto y la tendencia es aumentar. Este número elevado de procesos por usuario hace que la gestión de la información sea imprecisa poco fiable y prácticamente imposible de gestionar de una manera organizada ya que la manera de notificación existente en la actualidad está basada en el correo electrónico o en el almacenamiento manual de las URL con los resultados, por lo tanto, este proyecto pretende minimizar estos problemas mediante la realización de una gestión de los trabajos. Palabras Claves • GeneCodis • Ruby • Rails • Camping • Bioinformática • Análisis funcional • Bases de datos • HTML Página 3 Sistema de gestión de información de usuarios y resultados para el paquete 2008/09 informático GeneCodis Abstract Nowadays, Genecodis has about 500 real works which come from different places of the world, especially from Europe, USA and Japan. Moreover, the number of process which is realized by the same user is usually large and it normally goes on increasing. -
Realización De Un Sistema Web Complejo Para Uso Didáctico
Universidad Politécnica de Madrid Escuela Técnica Superior de Ingenieros de Telecomunicación REALIZACIÓN DE UN SISTEMA WEB COMPLEJO PARA USO DIDÁCTICO TRABAJO FIN DE MÁSTER Daniel Benítez Águila 2014 Universidad Politécnica de Madrid Escuela Técnica Superior de Ingenieros de Telecomunicación Máster Universitario en Ingeniería de Redes y Servicios Telemáticos TRABAJO FIN DE MÁSTER REALIZACIÓN DE UN SISTEMA WEB COMPLEJO PARA USO DIDÁCTICO Autor Daniel Benítez Águila Director Joaquín Salvachúa Rodríguez Departamento de Ingeniería de Sistemas Telemáticos 2014 Resumen El desarrollo de aplicaciones web está sufriendo grandes cambios en los últimos años. El crecimiento de servicios en la nube es una de las principales razones de esos cambios así como el incremento del número de tecnologías y soluciones asociadas a ello. Este Trabajo Fin de Máster se centra en la creación de un sistema web complejo para uso didáctico. Esto es un sistema web que pueda servir de ayuda para aquellos principiantes que deseen iniciarse en el desarrollo web actual. Se hará una breve introducción, donde se expondrá el contexto bajo el cual se va a desarrollar el trabajo y se definirán qué objetivos quieren alcanzarse con la realización del mismo. La principal meta de este trabajo es el diseño, desarrollo e implementación del sistema web. Para llevar a cabo dicha tarea, se analizarán las diferentes tecnologías que se estiman más novedosas y significativas en el ámbito del desarrollo de aplicaciones web, ya que se considera de vital importancia tener una panorámica de qué hay a día de hoy para poder elegir aquello que se más se ajuste a nuestras necesidades. Estas tecnologías serán lenguajes de programación, frameworks, motores de plantillas, bases de datos y plataformas de despliegue. -
Software Package Licenses
DAVIX 1.0.0 Licenses Package Version Platform License Type Package Origin Operating System SLAX 6.0.4 Linux GPLv2 SLAX component DAVIX 0.x.x Linux GPLv2 - DAVIX Manual 0.x.x PDF GNU FDLv1.2 - Standard Packages Font Adobe 100 dpi 1.0.0 X Adobe license: redistribution possible. Slackware Font Misc Misc 1.0.0 X Public domain Slackware Firefox 2.0.0.16 C Mozilla Public License (MPL), chapter 3.6 and Slackware 3.7 Apache httpd 2.2.8 C Apache License 2.0 Slackware apr 1.2.8 C Apache License 2.0 Slackware apr-util 1.2.8 C Apache License 2.0 Slackware MySQL Client & Server 5.0.37 C GPLv2 Slackware Wireshark 1.0.2 C GPLv2, pidl util GPLv3 Built from source KRB5 N/A C Several licenses: redistribution permitted dropline GNOME: Copied single libraries libgcrypt 1.2.4 C GPLv2 or LGPLv2.1 Slackware: Copied single libraries gnutls 1.6.2 C GPLv2 or LGPLv2.1 Slackware: Copied single libraries libgpg-error 1.5 C GPLv2 or LGPLv2.1 Slackware: Copied single libraries Perl 5.8.8 C, Perl GPL or Artistic License SLAX component Python 2.5.1 C, PythonPython License (GPL compatible) Slackware Ruby 1.8.6 C, Ruby GPL or Ruby License Slackware tcpdump 3.9.7 C BSD License SLAX component libpcap 0.9.7 C BSD License SLAX component telnet 0.17 C BSD License Slackware socat 1.6.0.0 C GPLv2 Built from source netcat 1.10 C Free giveaway with no restrictions Slackware GNU Awk 3.1.5 C GPLv2 SLAX component GNU grep / egrep 2.5 C GPLv2 SLAX component geoip 1.4.4 C LGPL 2.1 Built from source Geo::IPfree 0.2 Perl This program is free software; you can Built from source redistribute it and/or modify it under the same terms as Perl itself. -
View-Centric Performance Optimization for Database-Backed Web Applications
View-Centric Performance Optimization for Database-Backed Web Applications Junwen Yang1, Cong Yan2, Chengcheng Wan1, Shan Lu1, Alvin Cheung2 1University of Chicago, junwen, cwan, [email protected] 2University of Washington, congy, [email protected] Abstract—Web developers face the stringent task of designing … informative web pages while keeping the page-load time low. <p> … This task has become increasingly challenging as most web <%= @active_projects … > contents are now generated by processing ever-growing amount … </p> of user data stored in back-end databases. It is difficult for developers to understand the cost of generating every web-page … element, not to mention explore and pick the web design with @active_projects = user.projects.active the best trade-off between performance and functionality. In this … paper, we present Panorama, a view-centric and database-aware development environment for web developers. Using database- aware program analysis and novel IDE design, Panorama pro- Fig. 1: Performance understanding challenge vides developers with intuitive information about the cost and the performance-enhancing opportunities behind every HTML file sidebar.html.erb, which produces this sidebar, renders element, as well as suggesting various global code refactorings these projects based on a Ruby variable @active projects that enable developers to easily explore a wide spectrum of embedded in the HTML file; this variable is computed performance and functionality trade-offs. in a controller Ruby file todos controller.rb through a seemingly straightforward assignment @active projects = I. INTRODUCTION user.projects.active. It turns out that this code actually A. Motivation retrieves objects stored in a database, and is translated into High-quality web applications need to provide both good a SQL query by the Rails framework at run time. -
Load Testing of Containerised Web Services
UPTEC IT 16003 Examensarbete 30 hp Mars 2016 Load Testing of Containerised Web Services Christoffer Hamberg Abstract Load Testing of Containerised Web Services Christoffer Hamberg Teknisk- naturvetenskaplig fakultet UTH-enheten Load testing web services requires a great deal of environment configuration and setup. Besöksadress: This is especially apparent in an environment Ångströmlaboratoriet Lägerhyddsvägen 1 where virtualisation by containerisation is Hus 4, Plan 0 used with many moving and volatile parts. However, containerisation tools like Docker Postadress: offer several properties, such as; application Box 536 751 21 Uppsala image creation and distribution, network interconnectivity and application isolation that Telefon: could be used to support the load testing 018 – 471 30 03 process. Telefax: 018 – 471 30 00 In this thesis, a tool named Bencher, which goal is to aid the process of load testing Hemsida: containerised (with Docker) HTTP services, is http://www.teknat.uu.se/student designed and implemented. To reach its goal Bencher automates some of the tedious steps of load testing, including connecting and scaling containers, collecting system metrics and load testing results to name a few. Bencher’s usability is verified by testing a number of hypotheses formed around different architecture characteristics of web servers in the programming language Ruby. With a minimal environment setup cost and a rapid test iteration process, Bencher proved its usability by being successfully used to verify the hypotheses in this thesis. However, there is still need for future work and improvements, including for example functionality for measuring network bandwidth and latency, that could be added to enhance process even further. To conclude, Bencher fulfilled its goal and scope that were set for it in this thesis. -
An Introduction to Ruby and Rails
An Introduction to Ruby and Rails This paper was originally presented at the Southwest Fox conference in Gilbert, Arizona in October, 2010. http://www.swfox.net An Introduction to Ruby and Rails Rick Borup Information Technology Associates 701 Devonshire Dr, Suite 127 Champaign, IL 61820 Voice: (217) 359-0918 Fax: (217) 398-0413 Email: [email protected] Ruby is a powerful, object-oriented, open-source language with a clean and easily understandable syntax. Originally released to the public in 1995, wide-spread interest in the Ruby language really began to take off in 2003 with the release of the Ruby on Rails® framework. Also known as "RoR" or simply "Rails", Ruby on Rails is an open-source Web framework that makes it possible to quickly and easily create data-based Web applications. Together, the Ruby language and the Ruby on Rails framework can become an exciting and powerful addition to any developer's toolbox. This session introduces both the Ruby language and the Rails framework, focusing on their installation and use on a Windows® platform with a perspective geared toward experienced Visual FoxPro® developers. © 2010 Rick Borup Page 1 of 64 An Introduction to Ruby and Rails Table of Contents Introduction............................................................................................................................................................ 4 Installing Ruby and Rails on Windows......................................................................................................... 4 Installing Instant Rails -
Mobile Site Rewrite
Mobile Site Rewrite Patrick Reilly — Senior Developer Mobile Wikimedia Foundation Current implementation ● Ruby based mobile gateway utilizing Merb Process: ● A request comes in from a mobile browser ● The request generates a Device object in merb/extensions/request_extension.rb ● The Device object picks a format in Device#format_name ● Any method_missing that Device receives is looked up in the format specification ● The formats are specified in config/formats.yml ● An Article is fetched for that device ● First, the article figures out what kind of parser needed to be run on the page It then generates a key with that parser type. ● It then checks to see if that has been cached ● If it is not cached, it grabs scrapes the Wikipedia page and processes it with some /app/models/parsers/* class ● If it is cached, it returns that cached object ● The layout is generated with the returned Article#html ● The device format is used heavily here (aka, "= current_device.stylesheet_name") ● An "app/views/layouts/search#{format}.html.haml" file is rendered in the search area ● Changes in the search box and CSS fields are the biggest difference between formats Mobile site rewritten in PHP ● Having the site in Ruby causes a number of headaches (for code review, code deployment, and server maintenance) given Wikimedia's mostly PHP-based infrastructure. Rewrite rationale ● Puts the code in our code repo rather than on github ● Easier to review code in a language that most Wikimedia/MediaWiki developers are already using (PHP, instead of Ruby) ● Easier on -
Agile Web Development with Ruby and Rails
Agile web development with Ruby and Rails Mr. Charles Woo Marketing Officer of Gownfull IME Homepage: http://www.gownfull.com Email: [email protected] What is Ruby • It is not a stone! (Of course, you’re not attending a jewellwey design workshop) • Open-source programming language by Yukihiro Matsumoto (Japanese guy) • It is object-oriented • Numerous libraries are available (Database integration, XML,…) Page 2 What will be covered • From Installation to desktop program • Basic Ruby language • Basic concept in Relational Database • OO design methodologies • Ruby on Rails!! – web application development Page 3 1st Objective • Upon completion of this activity, you will be able to: – 1. Install the Ruby compiler – 2. Write, compile and execute a Ruby program; – 3. Perform simple arithmetic operations Page 4 Ruby installation • Ruby compiler can be downloaded on http://www.ruby-lang.org/en/downloads/ • You can use Ruby compiler in COMP labs by calling “nalwin32” from start menu Æ Run… However, I am using Mac Page 5 Installation of Ruby Page 6 Ruby installation • After installation, check whether the Ruby is successfully installed • Go to command prompt, enter ruby –v Page 7 Hello World • As a beginner, the 1st small program that you are going to write is “Hello World” • Source code: puts “Hello World!” • Save the file as HelloWorld.rb Page 8 Compile and execute • Use the command • “ruby HelloWorld.rb” • to compile and execute the application Page 9 Getting input from YOU puts “What is your name?” name = gets.chomp #without line break puts “How old are you?” age = gets puts ‘Hello, ‘ + name.to_s + ‘, you are ‘ + age.to_s + ‘ years old.’ Page 10 Additional exercise • Remove chomp in line 2 • Remove to_s Page 11 Play with strings # play with strings str = “Ruby programming is fun.” puts ‘What does length do? It returns: ‘ + str.length.to_s puts ‘How about slice(5,11)?’ + str.slice(5,11) puts str.count(‘programming’).to_s puts str.upcase puts str.downcase puts str Page 12 Task • Write a Ruby program that accepts a plaintext (i.e.