Is my jSON well written? - objective-c

Question

is my jSON well written ? i just have boxes with their detail and i want to populate a core data entity afterwards. (btw, i need a easy tutorial to set my datas in coredata, do you have? cimgf's tutorial is too complicated or i just don't understand them :/
{
"boxes": {
"boxesDetail": [
{
"codeArticle": "WPCDE01C412L",
"nameBox": "boxName",
"texteMarketing": "boxTextMarketing",
"descriptionBox": "boxDescritpion",
"nbActivities": 1650,
"kindBox": "boxKind",
"typeBox": "boxType",
"priceBox": 20,
"dlu": 2014,
"note": 3
},
{
"codeArticle": "BOOYAKA!!",
"nameBox": "boxNameName",
"texteMarketing": "boxTextMarketing",
"descriptionBox": "boxDescritpion",
"nbActivities": 1650,
"kindBox": "boxKind",
"typeBox": "boxType",
"priceBox": 39,
"dlu": 2014,
"note": 3
}
]
}
}

Answer 1

Just as JeremyP says, you should use a JSON Parser to check your JSON. I also fully recommend jsonlint.com for checking JSON.
As far as an easy tutorial for CoreData I would recommend Ray Wenderlich's tutorial. It's updated for iOS 5 so perhaps having an updated tutorial will help you understand. I haven't done the updated tutorial, but I'm pretty sure that's the one I looked at pre-iOS 5 when I was learning about CoreData.
After having a look at the CoreData tutorial and getting your head around it and understanding it, I would write a helper function as a category on your Box.
Something along the lines of
+ (id)boxWithDictionary:(NSDictionary *)dict withManagedObjectContext:(NSManagedObjectContext *)managedObjectContext;
{
Box *box = [NSEntityDescription insertNewObjectForEntityForName:#"Box"
inManagedObjectContext:managedObjectContext];
box.codeArticle = [dict objectForKey:#"codeArticle"];
box.nameBox = [dict objectForKey:#"nameBox"];
box.texteMarketing = [dict objectForKey:#"texteMarketing"];
box.descriptionBox = [dict objectForKey:#"descriptionBox"];
box.nbActivities = [dict objectForKey:#"nbActivities"];
box.kindBox = [dict objectForKey:#"boxKind"];
box.typeBox = [dict objectForKey:#"boxType"];
box.priceBox = [dict objectForKey:#"priceBox"];
box.dlu = [dict objectForKey:#"dlu"];
box.note = [dict objectForKey:#"note"];
return box;
}
The reason to put this code in a category and in a separate file to the Box.m and Box.h files that Xcode generate is so that if you ever edit the Box entity in CoreData and have to generate a new file, it won't overwrite this category file with your helper function.
I hope this helps.