c# - How to define model property for master detail -

i have post model every post it's need define category , tag , , category or tag wanna reach of posts have category of tag. blog model

 public class post     {         public guid id { get; set; }         public string title { get; set; }         public string body { get; set; }         public string summary { get; set; }         public datetime creationdate { get; set; }         public string urlslug { get; set; }          public category category { get; set; }         public tag tag { get; set; }      } 

and category:

public class category     {         public guid id { get; set; }         public string name { get; set; }         public string urlslug { get; set; }         public string description { get; set; }         public datetime creationdate { get; set; }          public ilist<post> posts { get; set; }     } 

and tag model:

public class tag     {         public guid id { get; set; }         public string name { get; set; }         public string urlslug { get; set; }         public string description { get; set; }         public datetime creationdate { get; set; }          public ilist<post> posts { get; set; }      } 

i want know i've done in designing model right or not ??

you dont need lists in model ( remove public ilist posts { get; set; }

first create 2 actions in controller takes tag id, , other`category id. inside actions posts , populate view ( detail view)

public actionresult postsbycategoryid(guid id) {    list<post> posts = ///get them id   return view(posts) ; //the view take list , displays posts }