Today I had a bit of time to do some further grails fooling around. I already had a working application old school (so everything you do was a page refresh.). I wanted to do some small Ajax stuff (getting a product using it’s id and then prefilling the price fields with that value.)<\/p>\n
In my domain I have the following object String name static hasMany = ['productPricings':ProductPricingHistory]<\/p>\n String toString(){ In my controller I have to following class ProductController {<\/p>\n def scaffold = Product<\/p>\n def showjson = { } In my gsp I have to following snippit $(document).ready(function(){ \t\t\t}); \t\tfunction calculatePrice(){ \t\tfunction initProduct(json){ <\/code><\/p>\n As you can see it is really nice. Okay with Java + DWR this is also very simple, but here I have it in my controller and just say render … as JSON and grails does the rest. Actually I still have to look if Spring has some kinde of build in JSON renderer. Probably somebody already created this. But hey now I save and run (no need for start stop of my application server \ud83d\ude00 ) and in the end it’s still bytecode I’m using.<\/p>\n I still have to do some grails testing where I generate my backend in JPA and include it in a jar. However the grails\/groovy part should still be reloadable, right? Anybody tried this yet?<\/p>\n","protected":false},"excerpt":{"rendered":" Today I had a bit of time to do some further grails fooling around. I already had a working application old school (so everything you do was a page refresh.). I wanted to do some small Ajax stuff (getting a product using it’s id and then prefilling the price fields with that value.) In my … <\/p>\n
\n
\nclass Product {<\/p>\n
\n String description
\n double buyInPrice
\n double unitPrice
\n double vatPerc<\/p>\n
\n return \"${description} ${unitPrice}\"
\n }
\n}
\n<\/code><\/p>\n
\n
\nimport grails.converters.JSON<\/p>\n
\n def product = Product.get(params.id)
\n\trender product as JSON
\n }<\/p>\n
\n<\/code><\/p>\n
\n<\/p>\n
\n $(\"#product\\\\.id\").change( function() {
\n setPrice($(this).val());
\n });
\n\t\t\t$(\"#units\").change(function(){
\n\t\t\t\tcalculatePrice();
\n\t\t\t});
\n });
\n\t\tfunction setPrice(productId){
\n\t\t\t$.ajax({
\n\t\t\t\turl:\"..\/product\/showjson\/\"+productId,
\n\t\t\t\tdataType:\"json\",
\n\t\t\t\tsuccess:function(json){initProduct(json);},
\n\t\t\t\terror:function(xhr){
\n \t\t\t\t\t\talert(\"Failed to save patient!: \" +
\n\t\t\t\t\t\txhr.status + \", \" + xhr.statusText );
\n\t\t\t\t}<\/p>\n
\n\t\t}<\/p>\n
\n\t\t\tvar unitprice = $(\"#unitprice\").val();
\n\t\t\tvar units = $(\"#units\").val();
\n\t\t\t$(\"#priceExcl\").val((unitprice * units));
\n\t\t}<\/p>\n
\n\t\t\t$(\"#unitprice\").val(json.unitPrice);
\n\t\t}<\/p>\n