Problem with creating model for three tables in MVC3

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Hi All,

I face some difficulties in MVC 3. I am really newbie in MVC 3. now i am developing sample ecommerce website. this is my models for displaying goods.

public class Product{
   public int productid {get;set;}
   public int CatID {get;set;}
   public string productname {get;set;}
   public string description {get;set;}
}

public class ProductPhoto{
   public int ProductPhotoID {get;set;}
   public int Productid {get;set;}
   public string Photopath {get;set;}
}

public class Category{
   public int CatID {get;set;}
   public string CatName {get;set;}
}

i want to show the products with picture depend on category in product
display page. So i build model like following.

public partial class Genre
   {
       public int CatID { get; set; }
       public string CatName { get; set; }
       public List<Product> Products { get; set; }
   }

but i don't know how to connect with ProductPhoto table. Pls help me.

Best Rgds,
df

Posted 5-Sep-12 6:06am

dartfrog

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ray_mayukh · Answer 1 · 2012-09-05T10:55:00

Try with this model using Entity Framework Code First...

C#

public class Product{
   public int productid {get;set;}
   public int catID {get;set;}
   public string productname {get;set;}
   public string description {get;set;}

   [ForeignKey("catID")]
   public virtual Category ProductCategory
   [JsonIgnore]
   public virtual ICollection<ProductPhoto> Photos
}

public class ProductPhoto{
   public int ProductPhotoID {get;set;}
   public int Productid {get;set;}
   public string Photopath {get;set;}

   [ForeignKey("Productid")]
   public virtual Product ProductOwner
}

public class Category{
   public int CatID {get;set;}
   public string CatName {get;set;}
   [JsonIgnore]
   public virtual ICollection<Product> Products
}

Then set your DbContext using DbSet<Category> Categories, DbSet<Product> Products, DbSet<ProductPhoto> ProductPhotos. If you are not using JSON serialization you can easily ignore [JsonIgnore] attribute.

Use this query to retieve images from Product based on category. I am retrieving the images of the first product only.

var v = dbContext.Products.Where(p=>p.catID == suppliedCatgoryId).First();
var images = v.Photos

Let me know if this helps.