How can I keep the the logic to translate a ViewModel's values to a Where clause to apply to a linq query out of My Controller?
- by Mr. Manager
This same problem keeps cropping up. I have a viewModel that doesn't have any persistent backing. It is just a ViewModel to generate a search input form.
I want to build a large where clause from the values the user entered. If the Action Accepts as a parameter SearchViewModel How do I do this without passing my viewModel to my service layer? Service shouldn't know about ViewModels right? Oh and if I serialize it, then it would be a big string and the key/values would be strongly typed.
SearchViewModel this is just a snippet.
[Display(Name="Address")]
public string AddressKeywords { get; set; }
/// <summary>
/// Gets or sets the census.
/// </summary>
public string Census { get; set; }
/// <summary>
/// Gets or sets the lot block sub.
/// </summary>
public string LotBlockSub { get; set; }
/// <summary>
/// Gets or sets the owner keywords.
/// </summary>
[Display(Name="Owner")]
public string OwnerKeywords { get; set; }
In my controller action I was thinking of something like this. but I would think all this logic doesn't belong in my Controller.
ActionResult GetSearchResults(SearchViewModel model){
var query = service.GetAllParcels();
if(model.Census != null){
query = query.Where(x=>x.Census == model.Census);
}
if (model.OwnerKeywords != null){
query = query.Where(x=>x.Owners == model.OwnerKeywords);
}
return View(query.ToList());
}
