modify entites

ApplicationCore/Entities/Category.cs

@@ -10,5 +10,9 @@ namespace ApplicationCore.Entities
     {
         public String Name { get; set; }
         public ICollection<Medicine> Medicines { get; set; }
+        public void  AddMedicine(Medicine medicine) {
+
+            Medicines.Add(medicine);
+        }
     }
 }

ApplicationCore/Entities/Ingredient.cs

@@ -12,5 +12,8 @@ namespace ApplicationCore.Entities
         public String Description { get; set; }
         public ICollection<Medicine> Medicines { get; set; }
         public ICollection<MedicineIngredient> MedicineIngredients { get; set; }
+
+
+
     }
 }

ApplicationCore/Entities/Medicine.cs

@@ -20,6 +20,16 @@ namespace ApplicationCore.Entities
         public ICollection<Patient> Patients { get; set; }
         public ICollection<PatientMedicine> PatientMedicines { get; set; }
 
+        public void AddIngredient(Ingredient ingredient , int ratio ) {
+            MedicineIngredients.Add(
+                new MedicineIngredient
+                {
+                    Ingredient = ingredient,
+                    Ratio = ratio,
+                    Medicine = this
+                });
+
+        }