groovy - Grails find in relationship -


i'm breaking head wall logic, have 2 domains, user , rss. when user add rss, have compare if it's not duplicated url in db given url in same user.

class rss {     long id     string link     static belongsto = [user:user] }  class user {     long id     long uid //facebook     string name     static hasmany = [rss:rss] }  def addrss(){ //logic url valid or not ...  def user = user.findbyuid(data.id) //get user uid , uid, can rss url  //and compare if(db_url == given_url) ... }

i tried many ways , had no success.

you use 1 of findorsavewhere or findorcreatewhere methods

def url = 'some url user' //data.url assume def user = user.findbyuid(data.id) rss.findorsavewhere(url: url, user: user)

if it's in db fetch if not create you. documentation explains difference between *save* , *create*


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