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POHow to Insert data in Join table which were created by using EF Code First
 

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  1. POHow to Insert data in Join table which were created by using EF Code First
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    <p>I have two Entity classes defined as </p> <p>1) Project Class</p> <pre><code>public class Project { [Key] [DatabaseGeneratedAttribute(DatabaseGeneratedOption.Identity)] public int ProjectId { get; set; } public string Title { get; set; } public string Description { get; set; } public DateTime CreatedDate { get; set; } public ICollection&lt;Person&gt; Persons { get; set; } } </code></pre> <p>2) Person Class</p> <pre><code> public class Person { public Person() { Projects = new List&lt;Project&gt;(); } [Key] [DatabaseGeneratedAttribute(DatabaseGeneratedOption.Identity)] public int PersonId { get; set; } public string Name { get; set; } public string EmailAddress { get; set; } public string Designation { get; set; } public string CellPhone { get; set; } public ICollection&lt;Project&gt; Projects { get; set; } } </code></pre> <p>And in my DataContext Class, the configuration is defined as</p> <pre><code> public class DataContext: DbContext { public DataContext() : base("name=DataContext") { } public DbSet&lt;Project&gt; Projects { get; set; } public DbSet&lt;Person&gt; Persons { get; set; } protected override void OnModelCreating(DbModelBuilder modelBuilder) { modelBuilder.Entity&lt;Project&gt;() .HasMany&lt;Person&gt;(p =&gt; p.Persons) .WithMany(p =&gt; p.Projects) .Map(m =&gt; { m.ToTable("ProjectPersons"); m.MapLeftKey("ProjectId"); m.MapRightKey("PersonId"); }); } } </code></pre> <p>After I created new project The project table and Person table populate with it's record but I notice ProjectPerson table which were created through joining not populated with the ProjectId And PersonId.</p> <p>Any suggestion please?</p> <p>Here is my HttpPost method to create new project</p> <pre><code>[HttpPost] public ActionResult CreateProject(Projects newProject, int page = 1) { _ctx.Projects.AddProject(newProject, ref _ctx); _ctx.Person.AddPerson(newProject.Person, newProject, ref _ctx); _ctx.SaveChanges(); var userProjects = _ctx.Projects.GetStaffUserProjects(providerUserKey, page, ref _ctx); return PartialView("_Projects", userProjects); } </code></pre> <p>And here are my Extension method which 'AddProject' and 'AddPerson'</p> <p>1) AddProject</p> <pre><code>public static void AddProject(this IEnumerable&lt;Project&gt; projects, Projects newProject, ref DataContext ctx) { var project = new Project { Title = newProject.Title, Duration = newProject.Duration, Description = newProject.Description, CreatedDate = DateTime.Now, Status = true, UserId = (int)Membership.GetUser().ProviderUserKey, ProjectCategoryId = newProject.SelectedProjectCategoryId, OrganizationId = newProject.SelectedOrganizationId }; ctx.Projects.Add(project); } </code></pre> <p>2) AddPerson</p> <pre><code>public static void AddPerson(this IEnumerable&lt;Person&gt; persons, Person newPerson, Projects newProject, ref DataContext ctx) { var person = new Person { Name = newPerson.Name, EmailAddress = newPerson.EmailAddress, CellPhone = newPerson.CellPhone, Designation = newPerson.Designation }; ctx.Person.Add(person); } } </code></pre>
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    1. USAmmar Khan
    1. USAmmar Khan
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    1. COCan someone please take a look at this post?
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      1. POHow to Insert data in Join table which were created by using EF Code First
      1. USAmmar Khan
    2. COCan you show the code how you "*created new project*"?
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      1. POHow to Insert data in Join table which were created by using EF Code First
      1. USSlauma
    3. CONobody reads your comment unless they look at your post :) - You probably never add items to either `Project.Persons` or `Person.Projects`. Anyway, as Slauma says, please show how you seed the database.
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      1. POHow to Insert data in Join table which were created by using EF Code First
      1. USGert Arnold
 

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