Ruby On Rails - 2. Rails Introduction

1. Ruby on Rails Web Development that doesnt hurt Dezember 2008 www.xing.com/profile/Christian_Feser www.xing.com/profile/Michael_Kram www.xing.com/profile/Jakob_Schroeter www.Marc-Seeger.de

2. 2 Christian Feser, Michael Kram, Jakob Schrter, Marc Seeger agenda Ruby on Rails?! Projekt: OnlineShop Datenmodell Views Controller Diskussion

3. Grundlagen

4. 4 Christian Feser, Michael Kram, Jakob Schrter, Marc Seeger Einordnung Java Ruby PHP Rails CakePHP Spring Merb Symfony Struts Sinatra Zend

5. 5 Christian Feser, Michael Kram, Jakob Schrter, Marc Seeger Entwicklung David Heinemeier Hansson Version 1.0: 2005 Version 2.0: 2007 Aktuell Version: 2.2.2

6. 6 Christian Feser, Michael Kram, Jakob Schrter, Marc Seeger Referenzprojekte http://rails100.pbwiki.com/

7. 7 Christian Feser, Michael Kram, Jakob Schrter, Marc Seeger MVC - Paradigma Model View Controller Active Action Action Record View Controller

8. 8 Christian Feser, Michael Kram, Jakob Schrter, Marc Seeger MVC - Paradigma http://wiki.rubyonrails.org/rails/pages/UnderstandingRailsMVC

9. 9 Christian Feser, Michael Kram, Jakob Schrter, Marc Seeger Konvention statt Konfiguration Ordner- struktur Namens- gebung

10. 10 Christian Feser, Michael Kram, Jakob Schrter, Marc Seeger Konvention statt Konfiguration models/order.rb views/orders/index.html.erb controllers/orders_controller.rb Tabelle: orders

11. 11 Christian Feser, Michael Kram, Jakob Schrter, Marc Seeger DRY-Prinzip Dont Repeat Yourself Dont Repeat Yourself Dont Repeat Yourself Dont Repeat Yourself Dont Repeat Yourself

12. Rails installieren

13. 13 Christian Feser, Michael Kram, Jakob Schrter, Marc Seeger Installation - Manuell 1 Ruby installieren 2 RubyGems installieren 3 Rails installieren gem install rails http://www.rubyonrails.org/down

14. 14 Christian Feser, Michael Kram, Jakob Schrter, Marc Seeger Installation One-Click 1 InstantRails installieren http://instantrails.rubyforge.org

15. 15 Christian Feser, Michael Kram, Jakob Schrter, Marc Seeger Entwicklungsumgebung TextMate Aptana RadRails (stand-alone/eclipse plugin) NetBeans

16. Startschuss Projekt: OnlineShop

17. 17 Christian Feser, Michael Kram, Jakob Schrter, Marc Seeger Lokales Entwicklungssystem InstantRails NetBeans IDE Firefox Extensions SQLite Manager und Firebug Verknpfung zu Rails API Docs Verknpfung zu InstantRails Verzeichnis

18. 18 Christian Feser, Michael Kram, Jakob Schrter, Marc Seeger Neues Rails-Projekt anlegen 1. Entwicklungsumgebung NetBeans starten 2. Im Men File > New Project 3. Ruby on Rails Application auswhlen 4. Projektname OnlineShop vergeben 5. Database Adapter sqlite3 auswhlen (kein Username, Password) 6. Rails Version 2.2.2 whlen

19. 19 Christian Feser, Michael Kram, Jakob Schrter, Marc Seeger Angelegte Verzeichnisstruktur app/ controller/ helpers/ models/ views/ config/ db/ public/ images javascripts stylesheets

20. 20 Christian Feser, Michael Kram, Jakob Schrter, Marc Seeger Umgebungseinstellungen Entwicklungsumgebung (development) Ausfhrliche Fehlermeldungen, Caching deaktiviert, ignoriert E-Mail-Versand Produktionsumgebung (production) Allgemeine Fehlermeldungen, Caching aktiviert Testumgebung (test) zum Ausfhren von Testklassen, ausfhrliche Fehlermeldungen, Caching deaktiviert

21. 21 Christian Feser, Michael Kram, Jakob Schrter, Marc Seeger Namenskonventionen variables_in_lower_case :symbol (nur ein Verweis auf einen String) ClassName ModuleName tables_names (im Plural) Englische Bezeichnungen

22. 22 Christian Feser, Michael Kram, Jakob Schrter, Marc Seeger Generatoren script/generate controller (Controller, Views, Helper) migration (Migration-Datei fr DB Update) model (Migration-Datei fr Tabellenerstellung) resource (leeres Model, leerer Controller) scaffold (Model, Migration, Controller + Actions, Views) script/destroy

23. Anwendungs-Anforderungen Projekt: OnlineShop

24. 24 Christian Feser, Michael Kram, Jakob Schrter, Marc Seeger Anwendungs-Anforderungen Shop bentigt: People Items Orders

25. 25 Christian Feser, Michael Kram, Jakob Schrter, Marc Seeger Grundgerst einrichten 1. Rechtsklick auf das Projekt > Generate 2. Auswahl scaffold 3. Modelname (im Singular) eingeben und Angabe der Attribute mit field:type Types: string, text, integer, float, decimal,

Ruby On Rails - 2. Rails Introduction

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