"Don't write the same code twice." - Advice from every code book ever.
C# model !== Javascript model, but close enough for me.
This brings me to a small project for today, create a t4 template in Visual Studio to transform the entities exposed by my DbContext into Knockout based Javascript models.
T4 Template source on GitHub
Basic DbContext with POCOs
namespace T4Templates.Entities {
public class MyDataContext:DbContext {
public DbSet People { get; set; }
public DbSet Projects { get; set; }
public DbSet Vendors { get; set; }
}
public class Person {
public Guid PersonKey { get; set; }
public string FirstName { get; set; }
public string LastName { get; set; }
}
public class Project {
public Guid ProjectKey { get; set; }
public Guid Name { get; set; }
public IEnumerable Vendors { get; set; }
}
public class Vendor {
public Guid VendorKey { get; set; }
public Guid Name { get; set; }
}
}
Results from transform.
(function () {
var nameSpace = 'MyNameSpaceHere';
var ns = {};
ns.Models = {
Person: function (data) {
this.PersonKey = ko.observable();
this.FirstName = ko.observable();
this.LastName = ko.observable();
this.update = function (data) {
ko.mapping.fromJS(data, {}, this);
}
if (data != undefined) {
this.update(data);
}
},
Project: function (data) {
this.ProjectKey = ko.observable();
this.Name = ko.observable();
this.Vendors = ko.observableArray();
this.update = function (data) {
ko.mapping.fromJS(data, {}, this);
}
if (data != undefined) {
this.update(data);
}
},
Vendor: function (data) {
this.VendorKey = ko.observable();
this.Name = ko.observable();
this.update = function (data) {
ko.mapping.fromJS(data, {}, this);
}
if (data != undefined) {
this.update(data);
}
},
}
window[nameSpace] = ns || {};
})();
