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Entity Framework 6 asp.net Code First Setup

Hi guys I am spinning wheels on this one. I am using EF6 and ASP.Net 4.6. I have a given table which has student information and parent information. A student can have many parents and a parent can have many students. Call this table 'Contact'. I am to create a table called 'Request' which will hold information for a parent submitting a request for his student. I will create a lookup table with two columns, one for student id and one for parent id called 'StudentParents'. I want to be able to have the parent log in, select his student from a drop down of all of his students and submit the request. The many to many relationship is throwing me off as far as my include statements. How can I get EF to set up this structure so that when I GetRequest(id) I can get the Student info and the Parent info to be included? Here is my code that wont Include anything other than the request.
public class Contact
{
[Key]
public int id { get; set; }
public string student_id { get; set; }//This is the Student ID
public string last_name { get; set; }
public string first_name { get; set; }
public string middle_initial { get; set; }
public string grade { get; set; }
public int current_school_id { get; set; }
public string current_school_name { get; set; }
[Display(Name = "Parent Last Name")]
public string contact_first_name { get; set; }
[Display(Name = "Parent Middle Name")]
public string contact_middle_name { get; set; }
[Display(Name = "Parent Last Name")]
public string contact_last_name { get; set; }
public string contact_relationship { get; set; }
[Display(Name = "Parent Email")]
public string contact_email { get; set; }
[Display(Name = "Parent Address")]
public string login { get; set; }//This is the Parent ID
public string Classif_description { get; set; }
}
public class Request
{
[Key]
public int id { get; set; }
public Student student_id { get; set; }
public Contact login { get; set; }
[Display(Name = "First School Choice")]
public string firstSchool { get; set; }
[Display(Name = "Second School Choice")]
public string secSchool { get; set; }
[Display(Name = "Rising Grade")]
public string rising_grade { get; set; }
public DateTime ReqSubmitted { get; set; }
public string ReqStatus { get; set; }
public DateTime Created { get; set; }
public DateTime Modified { get; set; }
public string ModifBy { get; set; }
}
public class Parent
{
public int id { get; set; }
public string contact_first_name { get; set; }
public string contact_middle_name { get; set; }
public string contact_last_name { get; set; }
public string contact_relationship { get; set; }
public string contact_email { get; set; }
public string contact_address { get; set; }
public string contact_city { get; set; }
public string contact_zip { get; set; }
[Key]
public string login { get; set; }
public string contact_pw { get; set; }
public string phone { get; set; }
public string phone_type { get; set; }
public Parent() { }
public virtual ICollection<Student> Students { get; set; }
}
public class Student
{
[Key]
public int id { get; set; }
public int student_id { get; set; }
public string last_name { get; set; }
public string first_name { get; set; }
public string middle_initial { get; set; }
public DateTime birthdate { get; set; }
public string gender { get; set; }
public string grade { get; set; }
public string Fed_race_description { get; set; }
public string Classif_description { get; set; }
public int current_school_id { get; set; }
public string current_school_name { get; set; }
public int home_school_id { get; set; }
public string home_school_name { get; set; }
public Student()
{
this.Parents = new HashSet<Parent>();
}
public virtual ICollection<Parent> Parents { get; set; }
}
public class OEContext : DbContext
{
public OEContext() : base("name=OEContext")
{
}
public DbSet<Request> Requests { get; set; }
public DbSet<Parent> Parents { get; set; }
public DbSet<Contact> Contacts { get; set; }
public DbSet<Student> Students { get; set; }
protected override void OnModelCreating(DbModelBuilder modelBuilder)
{
modelBuilder.Entity<Parent>()
.HasMany(s => s.Students)
.WithMany()
.Map(x =>
{
x.MapLeftKey("login");
x.MapRightKey("student_id");
x.ToTable("StudentParents");
}
);
base.OnModelCreating(modelBuilder);
}
}

Changed the strategy. Made Request have many Contacts. So I added a constructor to the request:
public Request()
{
Contacts = new List<Contact>();
}
public virtual ICollection<Contact> Contacts { get; set; }
Next I changed the contact class:
public int ContactId { get; set; }
public Contact() { }
public virtual Request Request { get; set; }
With this relationship I can pull both Parents and a student from the Contacts associated with the Request.

Entityframework navigation property insert

I have these models that ParentID foreign key for CustomerID
I want to insert an address for customer via navigation property
what should I do?
public partial class Customer
{
public long CustomerID { get; set; }
public string FirstName { get; set; }
public string LastName { get; set; }
public virtual ICollection<Address> Addresses { get; set; }
public virtual ICollection<Cart> Carts { get; set; }
public virtual ICollection<Order> Orders { get; set; }
}
public partial class Address
{
public long AddressID { get; set; }
public long ParentID { get; set; }
public string State { get; set; }
public string City { get; set; }
public string Address1 { get; set; }
public string PostalCode { get; set; }
public virtual Customer Customer { get; set; }
public virtual Supplier Supplier { get; set; }
}

Foreign Key References to Primary Key in the Same Table EF6

I have class in my MVC project and I used Entity Framework 6. Every person has a Master (master_Id) and it references to the same table (primary key in Person table). My way does not work... what's the solution?
public class Person
{
[Key]
public int Id { get; set; }
public string FirstName { get; set; }
public string LastName { get; set; }
public string Email { get; set; }
[ForeignKey("Person")]
public int Master_Id { get; set; }
public virtual Person Master { get; set; }
public virtual ICollection<Person> Persons { get; set; }
}

public class Person
{
[Key]
public int Id { get; set; }
public string FirstName { get; set; }
public string LastName { get; set; }
public string Email { get; set; }
public int? MasterId { get; set; }
[ForeignKey("MasterId")]
public virtual Person Master { get; set; }
public virtual ICollection<Person> Persons { get; set; }
}

How to properly add a foreign key from my own model to the EF Userprofile?

my model classes first:
public class Person
{
[Required, Key]
public int ID { get; set; }
[Required]
public string Name { get; set; }
[Required]
public string LearntSkillsAndLevelOfSkills { get; set; }
public string ProfileImage { get; set; }
public string City { get; set; }
public string PhoneNr { get; set; }
[Required]
public string Email { get; set; }
public string Hobbys { get; set; }
public string SkillsToLearn { get; set; }
public string Stand { get; set; }
public int YearsOfWorkExperience { get; set; }
public string HobbyProjectICTRelated { get; set; }
public string ExtraInfo { get; set; }
public string Summary { get; set; }
public int UserId { get; set; }
[ForeignKey("UserId")]
public virtual UserProfile profile { get; set; }
}
[Table("UserProfile")]
public class UserProfile
{
[Key]
[DatabaseGeneratedAttribute(DatabaseGeneratedOption.Identity)]
public int UserId { get; set; }
public string UserName { get; set; }
public Nullable<int> ID { get; set; }
public virtual Person personprofile { get; set; }
}
when i run this however it gives me this exception: The principal end of this association must be explicitly configured
i've searched this error but it doesn't clarify it for me... so i absolutely have no clue how to fix this. Basically i want to link my Person class to the Userprofiles so that i can create a login mechanism that automatically lets 1 person who makes an account on the site get 1 Profile to Edit to his own information. He's however not allowed to modify other people their accounts.
I hope this makes my problem clear and that somebody can help me :). i'm using EF 6 btw and i get the error in the class InitializeSimpleMembershipAttribute that comes standard with the MVC example of ASP.net
Greetings and thanks in advance,
Marijn

I managed to get it working with these codes in the models:
[Table("UserProfile")]
public class UserProfile
{
[Key, DatabaseGeneratedAttribute(DatabaseGeneratedOption.Identity)]
public int UserId { get; set; }
public string UserName { get; set; }
public virtual Person personprofile { get; set; }
}
public class Person
{
[ForeignKey("profile"), Key]
public int UserId { get; set; }
[Required]
public string Name { get; set; }
[Required]
public string LearntSkillsAndLevelOfSkills { get; set; }
public string ProfileImage { get; set; }
public string City { get; set; }
public string PhoneNr { get; set; }
[Required]
public string Email { get; set; }
public string Hobbys { get; set; }
public string SkillsToLearn { get; set; }
public string Stand { get; set; }
public int YearsOfWorkExperience { get; set; }
public string HobbyProjectICTRelated { get; set; }
public string ExtraInfo { get; set; }
public string Summary { get; set; }
public UserProfile profile { get; set; }
}

How to Map many one-to-many relationship in ASP.NET MVC?

I have few Domain Models - Address, Customer, Employee, StoreLocation. Address has many to one relationship with Customerand Employee and one to one relationship with StoreLocation.
public class Address
{
public int Id;
public string Line1 { get; set; }
public string Line2 { get; set; }
public string Line3 { get; set; }
}
public class Customer
{
public int Id { get; set; }
public string Name { get; set; }
public IList<Address> Addresses { get; set; }
}
public class StoreLocation
{
public int Id { get; set; }
public string ShortCode { get; set; }
public string Description { get; set; }
public Address Address { get; set; }
}
public class Employee
{
public int Id { get; set; }
public string Name { get; set; }
public DateTime Dob { get; set; }
public IList<Address> Addresses { get; set; }
}
How to Map this relationship?. I am using ASP.NET MVC 3.0 and Entity Framework 4.1.

If you are using code-first (I think you want this, else, you have to edit your Q), the first way is the way explained below:
Entities:
public class Address {
[Key]
public int Id { get; set; }
public string Line1 { get; set; }
public string Line2 { get; set; }
public string Line3 { get; set; }
public virtual Customer Customer { get; set; }
public virtual StoreLocation StoreLocation { get; set; }
public virtual Employee Employee { get; set; }
public int? CustomerId { get; set; }
public int? EmployeeId { get; set; }
}
public class Customer {
[Key]
public int Id { get; set; }
public string Name { get; set; }
public virtual ICollection<Address> Addresses { get; set; }
}
public class StoreLocation {
[Key]
public int Id { get; set; }
public string ShortCode { get; set; }
public string Description { get; set; }
public virtual Address Address { get; set; }
}
public class Employee {
[Key]
public int Id { get; set; }
public string Name { get; set; }
public DateTime Dob { get; set; }
public virtual ICollection<Address> Addresses { get; set; }
}
DbContext inherited class:
public class ManyOneToManyContext : DbContext {
static ManyOneToManyContext() {
Database.SetInitializer<ManyOneToManyContext>(new ManyOneToManyInitializer());
}
public DbSet<Address> Addresses { get; set; }
public DbSet<Customer> Customers { get; set; }
public DbSet<StoreLocation> StoreLocations { get; set; }
public DbSet<Employee> Employees { get; set; }
protected override void OnModelCreating(DbModelBuilder modelBuilder) {
modelBuilder.Conventions.Remove<IncludeMetadataConvention>();
modelBuilder.Entity<Customer>().HasMany(c => c.Addresses).WithOptional(a => a.Customer).HasForeignKey(a => a.CustomerId);
modelBuilder.Entity<StoreLocation>().HasRequired(s => s.Address).WithOptional(a => a.StoreLocation).Map(t => t.MapKey("AddressId"));
modelBuilder.Entity<Employee>().HasMany(e => e.Addresses).WithOptional(a => a.Employee).HasForeignKey(e => e.EmployeeId);
}
}
Context Initializer:
public class ManyOneToManyInitializer : DropCreateDatabaseAlways<ManyOneToManyContext> {
protected override void Seed(ManyOneToManyContext context) {
}
}
That will create the db-schema below:
Let me know if you have any questions or need clarifications on any part.