Json反序列化数据库字段和asp.net MVC

Question

Let say I have general table of records (I'm using EF code first) and there can be many different types of details that can be used with this table:

class Record{
int Id,
int TypeOfDetails, // int enum Type1, Type2
string Details, //string with json content
string Attribute 1,
string Atribute 2,
...
}

class DetailsType1{
  string InternalAtribute1,
  ....
}

I decided to use Json to serialize Details objects into database field. This allows to flexible work with different Details without changing DB schema.

Working with one records is easy, I know type of the Details object, so I can serialize and deserialize.

But how to efficiently retrieve multiple records and be able to reference details in in MVC ? Let say I do this:

var results = await context.Record.Where(..).ToAsyncList();

I would want to be able to do this in my .cshtml:

@Html.DisplayFor(modelItem => item.Record.Details.InternalAtribute1)

Essentially it would be doing deserialization on the fly..

Alternatively if something like that is possible in AngularJS it would also be helpful.

Let me know if I make myself clear with my question.

Answer 1

I will answer my questions. The best I figure out was this:

    class Record{
    int Id { get; set; }
    int TypeOfDetails { get; set; } // int enum Type1, Type2
    string JsonDetails { get; set; } //string with json content
    string Attribute1 { get; set; }
    string Atribute2 { get; set; }
    ...
    [NotMapped]
    public JObject Details { get; set; }

    public void PopulateDetails()
    {
        Details = JObject.Parse(JsonDetails);
    }    
}

You still need to execute PopulateDetails on all query results, I'm doing it in foreach loop. Then in CSHTML you can do this:

@item.Details["InternalAtribute1"])

Your internal Json object's details can be displayed.