Advanced custom page code sample

You can develop a unique UI for your applications by creating custom pages. This advanced sample code illustrates how to create a custom page by using the Model-View-Controller (MVC) architectural pattern. The implementation of this custom page uses MVC 4 ASP.NET. It includes files for the data domain, business logic, and the UI elements.

Note: For another example of a custom page, you can review the code in the Patient Tracker sample application. See Patient Tracker application.

This page contains the following information:

• Model code sample
• View code sample
• Controller code sample

Model code sample

The code sample for the model includes objects representing your data.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;

namespace PatientTracker.CustomPages.Models
{
    public class PatientModel
    {
        public Int32 PatientArtifactID { get; set; }
        public String FirstName { get; set; }
        public String LastName { get; set; }
        public DateTime DateOfBirth { get; set; }
        public String PatientNotes { get; set; }
        public String PicturePath { get; set; }
    }
}

View code sample

The code sample for the view includes elements that appear in the UI.

@model PatientTracker.CustomPages.Models.PatientModel

@{
    ViewBag.Title = "Patient";
    Layout = "~/Views/Shared/_Layout.cshtml";
}

<h2>Patient Profile</h2>

<fieldset>
    <legend>Patient</legend>

    <img src="@Model.PicturePath" style="margin-top:15px;margin-bottom:15px;border:5px solid #5A9BC7;display:block;" />

    <div class="display-label">
        First Name: 
    </div>
    <div class="display-field">
            @Html.DisplayFor(model => model.FirstName)
     </div>
    <div class="display-label">
        Last Name: 
    </div>
    <div class="display-field">
        @Html.DisplayFor(model => model.LastName)
    </div>

    <div class="display-label">
        Date of Birth: 
    </div>
    <div class="display-field">
        @Html.DisplayFor(model => model.DateOfBirth)
    </div>

    <div class="display-label">
        Notes: 
    </div>
    <div class="display-field">
        @Html.DisplayFor(model => model.PatientNotes)
    </div>
</fieldset>

Controller code sample

The code sample for the controller includes the business logic for retrieving and displaying data.

Note: For more information about using helpers to connect to the Services API, see Connect to the Services API with the client-side proxy and Using Relativity API Helpers.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;

namespace PatientTracker.CustomPages.Controllers
{
    /// <summary>
    /// This custom page shows how to use a patient artifactID and current workspace artifactID to retrieve information from the RSAPI, and then display a profile page for the patient.
    /// </summary>
    public class PatientController : Controller
    {
        public static readonly Guid PATIENT_RDO_GUID = new Guid("EDC3AF33-7D25-4897-8285-6E36EA1D4AAE");

        public static readonly Guid FIRST_NAME_FIELD_GUID = new Guid("EB024552-3A1B-40C1-B4DC-5815C3DD3AD3");
        public static readonly Guid LAST_NAME_FIELD_GUID = new Guid("DA73E11E-9D02-4D29-9D3C-F84E66223B2A");
        public static readonly Guid GENDER_FIELD_GUID = new Guid("04E5F293-A4E1-4DF4-8816-F1E6645AE001");
        public static readonly Guid DATE_OF_BIRTH_FIELD_GUID = new Guid("96BC22AF-F2F6-4C92-AD96-CF08BF9AAB4D");
        public static readonly Guid PATIENT_NOTES_FIELD_GUID = new Guid("5702F31B-48AC-4E2A-9000-A48B3E3ABDBF");
        public static readonly Guid PICTURE_FIELD_GUID = new Guid("006F21C0-66C8-46E0-94B2-EF37C6478C2D");

        public ActionResult Index(Int32 patientArtifactID, Int32 workspaceArtifactID)
        {
            PatientTracker.CustomPages.Models.PatientModel patient = new Models.PatientModel();
            kCura.Relativity.Client.DTOs.RDO patientRDO = null;

            try
            {
                //Create an instance of the RSAPIClient so we can pull back information about the patient.
                using (kCura.Relativity.Client.IRSAPIClient client = Relativity.CustomPages.ConnectionHelper.Helper().GetServicesManager().CreateProxy<kCura.Relativity.Client.IRSAPIClient>(Relativity.API.ExecutionIdentity.System))
                {
                    //Set the workspace artifactID.
                    client.APIOptions.WorkspaceID = workspaceArtifactID;

                    //Create an instance of the RDO with the Patient RDO GUID and the patient artifactID.
                    patientRDO = new kCura.Relativity.Client.DTOs.RDO(patientArtifactID);
                    patientRDO.ArtifactTypeGuids.Add(PATIENT_RDO_GUID);
                    patientRDO.Fields = kCura.Relativity.Client.DTOs.FieldValue.AllFields;

                    //Get the patient RDO from the RSAPI.
                    patientRDO = client.Repositories.RDO.Read(patientRDO).Results[0].Artifact;

                    //Set properties on the patient model.
                    patient.FirstName = patientRDO.Fields.Where(x => x.Guids.Contains(FIRST_NAME_FIELD_GUID)).Single().ValueAsFixedLengthText;
                    patient.LastName = patientRDO.Fields.Where(x => x.Guids.Contains(LAST_NAME_FIELD_GUID)).Single().ValueAsFixedLengthText;
                    patient.DateOfBirth = patientRDO.Fields.Where(x => x.Guids.Contains(DATE_OF_BIRTH_FIELD_GUID)).Single().ValueAsDate.Value;
                    patient.PatientNotes = patientRDO.Fields.Where(x => x.Guids.Contains(PATIENT_NOTES_FIELD_GUID)).Single().ValueAsLongText;

                    //Construct a download request used to get a proper download url for the file to be downloaded.
                    kCura.Relativity.Client.DownloadURLRequest pictureFieldDownloadRequest = new kCura.Relativity.Client.DownloadURLRequest(client.APIOptions);
                    Uri currentUrl = Request.Url;
                    pictureFieldDownloadRequest.BaseURI = new Uri(String.Format("{0}://{1}/", currentUrl.Scheme, currentUrl.Host));
                    pictureFieldDownloadRequest.Target.FieldGuid = PICTURE_FIELD_GUID;
                    pictureFieldDownloadRequest.Target.ObjectArtifactId = patientArtifactID;

                    //Set the picture file path on the patient model.
                    patient.PicturePath = client.Repositories.RDO.GetFileFieldDownloadURL(pictureFieldDownloadRequest).URL;
                }
            }
            catch (System.Exception ex)
            {
                patient.PatientNotes = "EXCEPTION: " + ex.ToString();
            }

            return View(patient);
        }

    }
}