c# - System.Data.SqlClient.SqlException: Invalid column name 'phone_types_phone_type_id'

Question

I'm trying to get information from some of my models that have a foreign key relationships to my main employee model. If I map out each model individually, I can access them like normal with no problems, but I have to visit multiple different web pages to do so.

I'm trying to merge several of my models into essentially a single controller, and work with them this way. Unfortunately, when I try to access these models I get a strange error:

System.Data.SqlClient.SqlException: Invalid column name 'phone_types_phone_type_id'.

After searching through my code, apparently the only location phone_types_phone_type_id appears is in my migration code. I'm incredibly new at C# and Asp.Net in general so any help is appreciated.

Here is the code for my model:

[Table("employee.employees")]
public partial class employees1
{
    public employees1()
    {
        employee_email_manager = new List<email_manager>();
        employee_employment_history = new HashSet<employment_history>();
        employee_job_manager = new HashSet<job_manager>();
        employee_phone_manager = new HashSet<phone_manager>();
        this.salaries = new HashSet<salary>();
    }

    [Key]
    public int employee_id { get; set; }
    [Display(Name="Employee ID")]
    public int? assigned_id { get; set; }

    [Display(Name="Web User ID")]
    public int? all_id { get; set; }

    [Required]
    [StringLength(50)]
    [Display(Name="First Name")]
    public string first_name { get; set; }

    [StringLength(50)]
    [Display(Name="Last Name")]
    public string last_name { get; set; }

    [Column(TypeName = "date")]
    [Display(Name="Birthday")]
    [DisplayFormat(ApplyFormatInEditMode = true, DataFormatString = "{0:MM/dd/yyyy}")]
    public DateTime birth_day { get; set; }

    [Required]
    [StringLength(1)]
    [Display(Name="Gender")]
    public string gender { get; set; }

    [Required]
    [StringLength(128)]
    [Display(Name="Social")]
    public string social { get; set; }

    [Required]
    [StringLength(128)]
    [Display(Name="Address")]
    public string address_line_1 { get; set; }

    [StringLength(50)]
    [Display(Name="Suite/Apt#")]
    public string address_line_2 { get; set; }

    [Required]
    [StringLength(40)]
    [Display(Name="City")]
    public string city { get; set; }

    [Required]
    [StringLength(20)]
    [Display(Name="State")]
    public string state { get; set; }

    [Required]
    [StringLength(11)]
    [Display(Name="Zip")]
    public string zip { get; set; }

    [Column(TypeName = "date")]
    [Display(Name="Hire Date")]
    [DisplayFormat(ApplyFormatInEditMode = true, DataFormatString = "{0:MM/dd/yyyy}")]
    public DateTime hire_date { get; set; }

    [Column(TypeName = "date")]
    [Display(Name="Separation Date")]
    [DisplayFormat(ApplyFormatInEditMode = true, DataFormatString = "{0:MM/dd/yyyy}")]
    public DateTime? termination_date { get; set; }

    [StringLength(70)]
    [Display(Name="Emergency Contact Name")]
    public string emergency_contact_name { get; set; }

    [StringLength(15)]
    [Display(Name = "Emergency Contact Number")]
    public string emergency_contact_phone { get; set; }

    [Display(Name = "Notes")]
    public string notes { get; set; }

    public virtual ICollection<phone_manager> employee_phone_manager { get; set; }

    [Table("employee.phone_manager")]
    public partial class phone_manager
    {
        [Key]
        public int phone_id { get; set; }

        public int employee_id { get; set; }

        [Required]
        [StringLength(15)]
        public string phone_number { get; set; }

        [StringLength(5)]
        public string phone_extension { get; set; }

        public int phone_type { get; set; }

        [Column(TypeName = "date")]
        public DateTime date_added { get; set; }

        public bool deleted { get; set; }

        public virtual employees1 employees1 { get; set; }

        public virtual phone_types phone_types { get; set; }
    }

    [Table("employee.phone_types")]
    public partial class phone_types
    {
        public phone_types()
        {
            phone_manager = new HashSet<phone_manager>();
        }

        [Key]
        public int phone_type_id { get; set; }

        [Required]
        [StringLength(50)]
        public string phone_type_name { get; set; }

        public virtual ICollection<phone_manager> phone_manager { get; set; }
    }
}

And the pertinent code from my view:

        @foreach (var item in Model.employee_phone_manager)
        {
            @Html.DisplayFor(modelItem => item.phone_number); 
            @: - 
            @Html.DisplayFor(modelItem => item.phone_type);
            <br />
        }

EDIT I may have found out the issue, but I'll definitely take more input if there is another option. My solution was to take and add the following: [ForeignKey("phone_type")] directly above this line: public virtual phone_types phone_types { get; set; } in my phone_manager class.

Answer 1

Your issue is that your connection string in data layer and connection string in web layer are pointing to different databases.

e.g. data layer reading dev database webapp pointing to test database.

Either update connection strings to point to the same database.

or

Make sure your both database have same tables and columns.