Entity Framework Code First 5 Cascade Delete on many to many tables error

Question

I\'ve this model

public class State
{
    public State()
    {
        this.Promotions = new List();
        this.Branches = new List

        

Answer 1

Ok, I understood the problem. It is not to have a many to many relationship, the problem is this

State -> Promotion -> PromotionStore
State -> Branch -> BranchPromotion
State -> Store -> StorePromotion

and then Store, Branch and Store have FK to State. So if I delete a State PromotionStore can be reached by 1st and 3rd possibilities.

What I ended up doing is turning off cascade delete for State and deleting the related records manually like this:

public override void Delete(State state)
{
   DbContext.Entry(state).Collection(x => x.Promotions).Load();
   DbContext.Entry(state).Collection(x => x.Stores).Load();
   DbContext.Entry(state).Collection(x => x.Branches).Load();

   var associatedPromotions = state.Promotions.Where(p => p.StateId == state.Id);
   associatedPromotions.ToList().ForEach(r => DbContext.Set<Promotion>().Remove(r));

   var associatedStores = state.Stores.Where(e => e.StateId == state.Id);
   associatedStores.ToList().ForEach(e => DbContext.Set<Store>().Remove(e));

   var associatedBranches = state.Branches.Where(s => s.StateId == state.Id);
   associatedBranches.ToList().ForEach(s => DbContext.Set<Branch>().Remove(s));

   base.Delete(state);
}