{"id":4381,"date":"2011-10-24T12:21:44","date_gmt":"2011-10-24T06:51:44","guid":{"rendered":"http:\/\/www.tothenew.com\/blog\/?p=4381"},"modified":"2011-10-24T12:21:44","modified_gmt":"2011-10-24T06:51:44","slug":"grails-binddata-to-collections","status":"publish","type":"post","link":"https:\/\/www.tothenew.com\/blog\/grails-binddata-to-collections\/","title":{"rendered":"Grails bindData to collections"},"content":{"rendered":"

Recently, I was stuck with a scenario where I was trying to bind a list of objects in my controller. While trying the way as suggested in the grails docs I was getting some weird IndexOutOfBoundException. Luckily I found a good solution on the grails mailing list: http:\/\/grails.1312388.n4.nabble.com\/Databinding-Collection-of-non-domain-objects-tp3260578p3260856.html<\/a>
\nThanks to mkwhit<\/a> for asking this and Dana<\/a> for suggesting this solution.
\n
\nThere is a Car class in my src\/groovy. There is a create.gsp that should create n number of cars at a time. The problem is to bind this data to a List of Car objects.<\/p>\n

Here is how I got it done:<\/p>\n

I ensured in my gsp that the car parameters are passed as car.1.name, car.1.brand, car.2.name, car.2.brand ….. So, when I did a params.car I get a Map like this:
\n[groovy]
\n1: [name:’carA’, brand:’brand1′]
\n2: [name:’carB’, brand:’brand2′]
\n3: [name:’carC’, brand:’brand2′]
\n1.name:’carA’
\n1.brand:’brand1′
\n2.name:’carB’
\n2.brand:’brand2′
\n3.name:’carC’
\n3.brand:’brand3′
\n[\/groovy]<\/p>\n

[groovy]
\ndef carParams = params.car.values().findAll {it instanceof GrailsParameterMap}
\nList<Car> carList = carParams.collect {
\n def car = new Car()
\n bindData(car, it)
\n car
\n}[\/groovy]<\/p>\n

So, we have a list of Car objects out from the params.<\/p>\n

Hope this helps.<\/p>\n

-Mohd Farid-<\/p>\n","protected":false},"excerpt":{"rendered":"

Recently, I was stuck with a scenario where I was trying to bind a list of objects in my controller. While trying the way as suggested in the grails docs I was getting some weird IndexOutOfBoundException. Luckily I found a good solution on the grails mailing list: http:\/\/grails.1312388.n4.nabble.com\/Databinding-Collection-of-non-domain-objects-tp3260578p3260856.html Thanks to mkwhit for asking this and […]<\/p>\n","protected":false},"author":26,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"iawp_total_views":4},"categories":[7],"tags":[361,665,664,4840],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.tothenew.com\/blog\/wp-json\/wp\/v2\/posts\/4381"}],"collection":[{"href":"https:\/\/www.tothenew.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.tothenew.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.tothenew.com\/blog\/wp-json\/wp\/v2\/users\/26"}],"replies":[{"embeddable":true,"href":"https:\/\/www.tothenew.com\/blog\/wp-json\/wp\/v2\/comments?post=4381"}],"version-history":[{"count":0,"href":"https:\/\/www.tothenew.com\/blog\/wp-json\/wp\/v2\/posts\/4381\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.tothenew.com\/blog\/wp-json\/wp\/v2\/media?parent=4381"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.tothenew.com\/blog\/wp-json\/wp\/v2\/categories?post=4381"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.tothenew.com\/blog\/wp-json\/wp\/v2\/tags?post=4381"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}