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Posted By

scottdavis99 on 01/03/07


Tagged

atom groovy grails


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Atom feed from Grails

Published in: Groovy 

URL: http://aboutgroovy.com/item/atom

Here's a quick block of code that adds a valid Atom feed to you Grails application. Validate here: http://feedvalidator.org/check?url=http://aboutgroovy.com/item/atom


Plain TextExpand 
  1. def atom = {
  2.     	params.max = 10
  3.      	params.sort = 'datePosted'
  4.      	params.order = 'desc'
  5.        	def tmpList = Item.list( params )	
  6.  
  7. 		def feedHeader = """<feed xmlns="http://www.w3.org/2005/Atom">
  8. 		  <title type="text">aboutGroovy.com</title>
  9. 		  <link rel="alternate" type="text/html" href="http://aboutGroovy.com"/>
  10. 		  <link rel="self" type="application/atom+xml" href="http://aboutGroovy.com/item/atom"/>
  11. 		  <updated>2006-12-17T18:30:02Z</updated>
  12. 		  <author><name>Scott Davis</name></author>
  13. 		  <id>tag:aboutgroovy.com,2006-12-18:thisIsUnique</id>
  14. 		  <generator uri="http://aboutGroovy.com" version="0.0.1">Hand-rolled Grails code</generator>
  15. 		"""
  16.  
  17. 		def feedFooter = "</feed>"
  18.  
  19. 		StringBuffer feed = new StringBuffer()
  20. 		def df = new java.text.SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss'-07:00'")
  21. 		tmpList.each{item ->
  22. 			Writer sw = new StringWriter()
  23. 			def x = new groovy.xml.MarkupBuilder(sw)
  24. 			x.entry(xmlns:"http://www.w3.org/2005/Atom"){
  25. 				author{name("Scott Davis")}
  26. 				published(df.format(item.datePosted))
  27. 				updated(df.format(item.datePosted))
  28. 				link(href:"http://aboutGroovy.com/item/show/${item.id}", 
  29. 					rel:"alternate", title:item.title, type:"text/html")
  30. 				id("tag:aboutgroovy.com,2006:/item/show/${item.id}")
  31. 				title(type:"text", item.title)
  32. 				content(type:"xhtml"){
  33. 					div(xmlns:"http://www.w3.org/1999/xhtml"){
  34. 						p("Category: ${item.type}")
  35. 						p{a(href:item.url, "Original Source")}
  36. 						p(item.shortDescription)
  37. 						p(item.description)
  38. 					}
  39. 				}	
  40. 			}
  41. 			feed.append(sw.toString() + "\n")
  42. 		}
  43.  
  44. 		response.setContentType("application/atom+xml")				
  45. 		render "${feedHeader}${feed}${feedFooter}"
  46. 	}

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