How To Fix Circular Reference Error When Dealing With Json

Question

This question is a part of my original post here Get Data Into Extjs GridPanel

Below is my Controller that reads data from sql db and then I am trying to encode the

Answer 1

I use the following tool for serializing and deserializing JSON:

http://james.newtonking.com/pages/json-net.aspx

It's very easy to use and very lightweight.

While serializing we use this option:

JsonConvert.SerializeObject(myObject, Formatting.Indented, 
                            new JsonSerializerSettings { 
                                   ReferenceLoopHandling = ReferenceLoopHandling.Ignore 
                            })

It ignores circular references.

Also json.net from newtonking is extremely fast.

The other options is to use DTO's and map them via Automapper as mentioned by Diver.

Edit: I suspect your store is wrong:

var store = Ext.create('Ext.data.JsonStore', {      
        storeId: 'myData',
        reader: new Ext.data.JsonReader({
            root: 'myTable',
            fields: [{ name: 'Q1', type: 'int' },
                     { name: 'Q2', type: 'int' },
                     { name: 'Q3', type: 'int' },
                     { name: 'Q4', type: 'int' },
                     { name: 'Q5', type: 'int' },
                     { name: 'Improvements', type: 'string' },
                     { name: 'Comments', type: 'string'}]
        }),

        proxy: {
             type: 'json',
            url: 'GridView/writeRecord'
        }    
});