Grails @ Battle of the Geeks 2007

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Short presentation used to present Grails at the battle of the geeks.

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Grails @ Battle of the Geeks 2007

  1. 1. GRAILS
  2. 2. Peter Maas ~ Works at Finalist IT Group. 70% Developer, 25% Architect and 5% CTO Board. Experience includes Java/JEE, Spring, Hibernate, i B a t i s , J S F, S t r u t s , M M B a s e. Passionate about scripting languages for the JVM like Groovy and JRuby.
  3. 3. So, what is Grails? In its' essence Grails is an MVC action-based webframework · CoC: convention over configuration · DRY: don't repeat yourself · TDD: test driven development · Combines advantages of frameworks like RoR/Django/Turbogears with proven Java technology
  4. 4. GROOVY ≠ GRUBY GRAILS ≠ RAILS
  5. 5. uses defacto & proven frameworks Quartz Webflow Spring Acegi Groovy SiteMesh Compass Gorm Lucene Hibernate
  6. 6. Key Advantages · Lowers the steep learningcurve of the Java platform · Brings (back) both productivity and pleasure of development · Lets you build applications in an incremental/iterative way · Allows you to scale your application in complexity and infrastructure
  7. 7. DEMO Battle Registration Presentation 1 name 1 * * name name description email description date
  8. 8. Domain classes class Registration { class Battle { class Presentation { String name String name String name String email String description String description Criteria Battle battle Date date Battle battle static belongsTo = [Battle] static hasMany = static belongsTo = [Battle] def listByRegistration = { [presentations:Presentation,registrations:Registration] def c = Battle.createCriteria() static constraints = { def results = c{ static constraints = { static constraints = { name(blank: false) registrations{ name(blank: false) name(blank: false) email(blank: false, like(quot;namequot;,quot;%${params.name}%quot;) description(blank: false) description(blank: false) email: true) } date(nullable: false) battle(nullable: false) battle(nullable: false) order(quot;datequot;,quot;descquot;) } } } } def String toString(){ def String toString() { def String toString() { render(view:'list',model:[battleList: results]) return name return name return name } } } } } } } g:textArea Bootstrap Battle b = new Battle(name: quot;Battle of the Geeks 2007quot;, description: quot;Finalists BOTG 2007quot;, date: new Date()) <g:textArea name=quot;myFieldquot; value=quot;myValuequot; rows=quot;5quot; cols=quot;40quot;/> b.save() [quot;CMScquot;, quot;Guicequot;,quot;Grailsquot;,quot;Mulequot;].each{ Spring config Presentation p = new Presentation(name: quot;${it} presentationquot;, description: quot;presentation about ${it}quot;, battle: b) p.save() } <bean id=quot;textileParserquot; class=quot;com.plink.plextile.TextParserquot;/> Taglib Render AS import com.plink.plextile.*; import grails.converters.* class TextileTagLib { ... TextParser textileParser def showXML = { def renderTextile = { attrs -> Battle b = Battle.get( params.id) out << textileParser.parseTextile(attrs.value, true) render b as XML } } }

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