3

I need to pass parameters in Json format from Sitecore item. I am getting Sitecore item using GlassMapper.

public interface ISomeType
{
  //some fields
}
public interface ISomeFolder
{
    IEnumerable<ISomeType> SubItems { get; set; }
}

...

var folder = _sitecoreContext.GetItem<ISomeFolder>(dataSourceId)
var list = folder.SubItems;
var json = JsonConvert.SerializeObject(list); // <= Here I get "Exception of type 'System.StackOverflowException' was thrown."

List type is Glass.Mapper.Sc.LazyItemEnumerable<ISomeType>. It contains Castle.Proxies.ISomeTypeProxy items, I can access to them. I can access to all their fields described in the interface. But I am getting System.StackOverflowException exception when trying to serialize it.

Is it possible to serialize GlassMapper objects to Json using Newtonsoft Json.NET?

If yes then what I am doing wrong? If no, what is the best way to convert GlassMapper object to Json?

4
  • 1
    The way I do it is I create a JSon-specific item that contains a subset of the fields of the original Glass-mapped item; that's because some fields may not be serializable. Also you should use the actuall item, not the Glass Mapper Proxy one (which you may get if your Glass item is lazy-loaded). May 9 '19 at 13:39
  • 1
    I believe the StackOverflowException is thrown because (depending on how you have your models set up) it tries to serialize all the parents/children, which in turn serializes their parents/children, etc. May 9 '19 at 13:42
  • @DanSinclair I have tried to avoid parents/children serialization by handling reference loop in ReferenceLoopHandling = Newtonsoft.Json.ReferenceLoopHandling.Ignore. But with no luck. Result is the same.
    – Anton
    May 9 '19 at 13:48
  • It's not referencing a loop, it's just referencing all items in both directions from your item, which will (eventually) try to serialize every item in the entire Sitecore tree. May 9 '19 at 14:08
3

The easiest way to solve this would be to use either a custom class or a dynamic one when you serialize:

var folder = _sitecoreContext.GetItem<ISomeFolder>(dataSourceId)
var list = folder.SubItems;
var json = JsonConvert.SerializeObject(list.Select(subitem => new 
                                                   { 
                                                       subitem.Field1,
                                                       subitem.Field2,
                                                       CustomFieldName = subitem.Field3
                                                   }));
1
  • Elegant solution, and quicker than the one I use! Repped. May 9 '19 at 14:36

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