I have the following class
public class MenuVeiculo
{
public string Nome { get; set; }
public string NomeEn { get; set; }
public Guid ID { get; set; }
}
As you can see, I have two properties, "Nome" and "NomeEn." Each one represents the name and the name in English.
Mvc.sitemap
<mvcSiteMapNode key="MenuVeiculo" dynamicNodeProvider="Semep.Extensibilidade.SiteMap.MenuVeiculoDynamicNodeProvider, Semep" title="Menu veiculo" action="Index" controller="Rental">
MenuVeiculoDynamicNodeProvider.cs
public class MenuVeiculoDynamicNodeProvider : DynamicNodeProviderBase
{
public override IEnumerable<DynamicNode> GetDynamicNodeCollection()
{
var context = DependencyResolver.Current.GetService<SemepContext>();
var listDB = (from p in context.MenusVeiculo
select new
{
p.Nome,
p.ID
});
const string keyFormat = "MenuVeiculo_{0}";
foreach (var menu in listDB.ToList())
{
var key = string.Format(keyFormat, menu.ID.ToString().ToUpper());
var root = new DynamicNode(key, menu.Nome)
{
Title = menu.Nome
,
Key = key
};
root.Attributes.Add("id", menu.ID.ToString());
root.RouteValues.Add("id", menu.ID);
yield return root;
}
}
#endregion
}
Question
My question is, how to work with multi-language and DynamicNodeProviderBase?
As you can see, there are two fields, and I'm only showing one.
A problem of "Thread.CurrentThread.CurrentCulture" is that the MvcSiteMapProvider caches the result, how to handle this:
Yes this is one of the shortcomings of MvcSiteMapProvider. In a project I've solved this by returning all the nodes, one for each localization, and using a custom VisibilityProvider to only show the correct localization.
You need to create an additional Route with lang parameter:
routes.MapRoute(
name: "Default_lang",
url: "{lang}/{controller}/{action}/{id}",
defaults: new { controller = "Home", action = "Index", id = UrlParameter.Optional },
constraints: new { lang = #"^(en|ru)$" },
namespaces: new[] { "PNSoft.WebSite.Controllers" }
);
Then, in your mvc.sitemap you specify lang="..." parameter for the root node and for child nodes you need to set inheritedRouteParameters="lang" and then you can get lang from node RouteValues property:
public override IEnumerable<MvcSiteMapProvider.DynamicNode> GetDynamicNodeCollection(MvcSiteMapProvider.ISiteMapNode node)
{
var lang = (string)node.RouteValues["lang"];
...
}
Thats all!
Related
I am creating a dynamic carousel view in my Xamarin app, and so far it works just fine, but...
My carousel contains students and each carousel page is a link to a student info page. I want to be able to set an object with the current selected student for me to grab on all the students subpages (hope this makes sense :-/).
My script is as follow.
StudentModel:
public class StudentData
{
public string id { get; set; }
public string name { get; set; }
public string course { get; set; }
public string schoolclass { get; set; }
public string profileImage { get; set; }
}
CarouselPart:
ObservableCollection<StudentData> collection = new ObservableCollection<StudentData>();
collection.Add(new StudentData { name = "Soren Hanson", schoolclass = "4. grade", course = "Math" });
collection.Add(new StudentData { name = "Michael Trane", schoolclass = "7. grade", course = "English" });
collection.Add(new StudentData { name = "Tammy Jump", schoolclass = "1. grade", course = "English" });
DataTemplate template = new DataTemplate(() =>
{
var imageBtn = new Button();
imageBtn.Image = "Images/default.png";
imageBtn.Clicked += delegate {
// ADDING THE CURRENT STUDENT TO MY CURRSTUDENT OBJECT //
//App.currStudent = collection.......
var menteeOptions = new MenteeOptions();
imageBtn.Navigation.PushAsync(menteeOptions);
}
}
carousel.ItemTemplate = template;
carousel.PositionSelected += pageChanged;
carousel.ItemsSource = collection;
Hoping for help with this and thanks in advance :-)
Well you question was quite confusing at first but I will answer it from what I understood you want to keep the selected student object with you on your subpages:
So you can either use SQLite for it which can be found here
Or you can just maintain it as a static system object on your app.xaml.cs and use it
Something like this
App.Xaml.cs
public static object YourDataHolder {get; set;}
In your clicked event:
imageBtn.Clicked += delegate {
// ADDING THE CURRENT STUDENT TO MY CURRSTUDENT OBJECT //
App.YourDataHolder = _yourCollection;
var menteeOptions = new MenteeOptions();
imageBtn.Navigation.PushAsync(menteeOptions);
}
The use it something like this :
fooObject=App.YourDataHolder as FooType;
I'm going through a short Web Api + OData tutorial from asp.net: http://www.asp.net/web-api/overview/odata-support-in-aspnet-web-api/getting-started-with-odata-in-web-api/create-a-read-only-odata-endpoint.
I downloaded the example project, and it works. But then I started playing around with the Product model that they use in the example. I added a new property to act as a key of type string instead of an integer key.
The new Product.cs:
public class Product
{
public string stringKey { get; set; }
public int ID { get; set; }
public string Name { get; set; }
public decimal Price { get; set; }
public string Category { get; set; }
}
The modified controller:
public class ProductsController : EntitySetController<Product, string>
{
static List<Product> products = new List<Product>()
{
new Product() { stringKey = "one", ID = 1, Name = "Hat", Price = 15, Category = "Apparel" },
new Product() { stringKey = "two", ID = 2, Name = "Socks", Price = 5, Category = "Apparel" },
new Product() { stringKey = "three", ID = 3, Name = "Scarf", Price = 12, Category = "Apparel" },
new Product() { stringKey = "four", ID = 4, Name = "Yo-yo", Price = 4.95M, Category = "Toys" },
new Product() { stringKey = "five", ID = 5, Name = "Puzzle", Price = 8, Category = "Toys" },
};
[Queryable]
public override IQueryable<Product> Get()
{
return products.AsQueryable();
}
protected override Product GetEntityByKey(string key)
{
return products.FirstOrDefault(p => p.stringKey == key);
}
}
The trouble is that when I go to /odata/Products(one) the string "one" is not bound to the key argument in the GetEntityByKey(string key) action. However, when I browse to odata/Products(1) then "1" does get bound to the key argument.
How can I get a string with text values to bind correctly, instead of just binding strings with numerical values?
Update
I forgot to include the WebApiConfig:
public static class WebApiConfig
{
public static void Register(HttpConfiguration config)
{
ODataModelBuilder modelBuilder = new ODataConventionModelBuilder();
modelBuilder.EntitySet<Product>("Products");
Microsoft.Data.Edm.IEdmModel model = modelBuilder.GetEdmModel();
config.Routes.MapODataRoute("ODataRoute", "odata", model);
}
}
I noticed that the path /odata/Products(0011-1100) would only bind "0011" as the string key.
After some playing around with it, I've found that the following path works as I had hoped:
/odata/Products('one')
It appears the single quotes are required to read the entire string within the parentheses.
I'm having hard time understanding how to convert an Enum value to it's corresponding name. My model is as follows:
public class CatalogRule
{
public int ID { get; set; }
[Display(Name = "Catalog"), Required]
public int CatalogID { get; set; }
[Display(Name = "Item Rule"), Required]
public ItemType ItemRule { get; set; }
public string Items { get; set; }
[Display(Name = "Price Rule"), Required]
public PriceType PriceRule { get; set; }
[Display(Name = "Value"), Column(TypeName = "MONEY")]
public decimal PriceValue { get; set; }
[Display(Name = "Exclusive?")]
public bool Exclude { get; set; }
}
public enum ItemType
{
Catalog,
Category,
Group,
Item
}
public enum PriceType
{
Catalog,
Price_A,
Price_B,
Price_C
}
A sample result from .net API:
[
{
$id: "1",
$type: "XYZ.CMgr.Models.CatalogRule, XYZ.CMgr",
ID: 1,
CatalogID: 501981,
ItemRule: 0,
Items: "198",
PriceRule: 1,
PriceValue: 0.5,
Exclude: false
},
{
$id: "2",
$type: "XYZ.CMgr.Models.CatalogRule, XYZ.CMgr",
ID: 2,
CatalogID: 501981,
ItemRule: 2,
Items: "9899",
PriceRule: 2,
PriceValue: 10.45,
Exclude: false
}
]
So in this example, I need to get Catalog for results[0].ItemRule & Price A for results[0].PriceRule. How can I accomplish this in BreezeJS??
This is easy to do in ASP.NET Web API, because it is an out-of-box feature in the default JSON serializer (Json.NET).
To see strings instead of enum numbers in JSON, just add an instance of StringEnumConverter to JSON serializer settings during app init:
var jsonFormatter = GlobalConfiguration.Configuration.Formatters.JsonFormatter;
jsonFormatter.SerializerSettings.Converters.Add(new Newtonsoft.Json.Converters.StringEnumConverter());
UPDATE: Yep, you right, this is not help with Breeze.js. Ok, you can anyway do a little magic to make enums work like strings (while new version with fix is not released).
Create a custom ContextProvider which updates all integer enum values in metadata to strings. Here it is:
public class StringEnumEFContextProvider<T> : EFContextProvider<T>
where T : class, new()
{
protected override string BuildJsonMetadata()
{
XDocument xDoc;
if (Context is DbContext)
{
xDoc = GetCsdlFromDbContext(Context);
}
else
{
xDoc = GetCsdlFromObjectContext(Context);
}
var schemaNs = "http://schemas.microsoft.com/ado/2009/11/edm";
foreach (var enumType in xDoc.Descendants(XName.Get("EnumType", schemaNs)))
{
foreach (var member in enumType.Elements(XName.Get("Member", schemaNs)))
{
member.Attribute("Value").Value = member.Attribute("Name").Value;
}
}
return CsdlToJson(xDoc);
}
}
And use it instead of EFContextProvider in your Web API controllers:
private EFContextProvider<BreezeSampleContext> _contextProvider =
new StringEnumEFContextProvider<BreezeSampleContext>();
This works well for me with current Breeze.js version (1.1.3), although I haven't checked other scenarios, like validation...
UPDATE: To fix validation, change data type for enums in breeze.[min|debug].js, manually (DataType.fromEdmDataType function, dt = DataType.String; for enum) or replace default function during app init:
breeze.DataType.fromEdmDataType = function (typeName) {
var dt = null;
var parts = typeName.split(".");
if (parts.length > 1) {
var simpleName = parts[1];
if (simpleName === "image") {
// hack
dt = DataType.Byte;
} else if (parts.length == 2) {
dt = DataType.fromName(simpleName);
if (!dt) {
if (simpleName === "DateTimeOffset") {
dt = DataType.DateTime;
} else {
dt = DataType.Undefined;
}
}
} else {
// enum
dt = DataType.String; // THIS IS A FIX!
}
}
return dt;
};
Dirty, dirty hacks, I know... But that's the solution I found
There will be a new release out in the next few days where we "change" breeze's enum behavior ( i.e. break existing code with regards to enums). In the new release enums are serialized and queried by their .NET names instead of as integers. I will post back here when the new release is out.
I'm trying to build a constraint that checks against database. And I'm using Ninject, but for some reason it doesnt create a new instance of my repository when it fires.
global.asax.cs
// Content
routes.MapRoute(
"Content Language Route",
"{languageID}/List",
new { controller = "Content", action = "Index",
new { languageID = new LanguageRouteConstraint() },
new string[] { "MyProj.MVC.Controllers" }
);
.....
kernel.Bind<IContentRepository>().To<ContentRepository>();
Constraint
public class LanguageRouteConstraint : IRouteConstraint
{
#region IRouteConstraint Members
private readonly IContentRepository _contentRepository;
public LanguageRouteConstraint(IContentRepository contentRepository)
{
this._contentRepository = contentRepository;
}
public bool Match(HttpContextBase httpContext, Route route, string parameterName, RouteValueDictionary values, RouteDirection routeDirection)
{
if (routeDirection == RouteDirection.IncomingRequest)
{
string languageID = values["languageID"].ToString();
if (String.IsNullOrEmpty(languageID))
return false;
MyProj.MVC.Models.Language language = _contentRepository.GetLanguage(languageID);
return (language != null);
}
return false;
}
#endregion
}
Using Ninject for the repository works in the controller, but do I need to modify the route in gobal asa for it to make it work?
Solved it like this:
// Content
routes.MapRoute("Content Language Route",
"{languageID}/List",
new { controller = "Content", action = "Index",
new
{
languageID = new LanguageRouteConstraint(
DependencyResolver.Current.GetService<IContentRepository>())
},
new string[] { "MyProj.MVC.Controllers" }
);
I want to replicate what StackOverflow does with its URLs.
For example:
Hidden Features of C#? - (Hidden Features of C#?)
or
Hidden Features of C#? - (Hidden Features of C#?)
Will Take you to the same page but when they return to the browser the first one is always returned.
How do you implement the change so the larger URL is returned?
The way that I've handled this before is to have two routes, registered in this order
routes.MapRoute(
null,
"questions/{id}/{title}",
new { controller = "Questions", action = "Index" },
new { id = #"\d+", title = #"[\w\-]*" });
routes.MapRoute(
null,
"questions/{id}",
new { controller = "Questions", action = "Index" },
new { id = #"\d+" });
now in the controller action,
public class QuestionsController
{
private readonly IQuestionRepository _questionRepo;
public QuestionsController(IQuestionRepository questionRepo)
{
_questionRepo = questionRepo;
}
public ActionResult Index(int id, string title)
{
var question = _questionRepo.Get(id);
if (string.IsNullOrWhiteSpace(title) || title != question.Title.ToSlug())
{
return RedirectToAction("Index", new { id, title = question.Title.ToSlug() }).AsMovedPermanently();
}
return View(question);
}
}
We'll permanently redirect to the URL that contains the title slug (lowercase title with hyphens as separators) if we only have the id. We also make sure that the title passed is the correct one by checking it against the slugged version of the question title, thereby creating a canonical URL for the question that contains both the id and the correct title slug.
A couple of the helpers used
public static class PermanentRedirectionExtensions
{
public static PermanentRedirectToRouteResult AsMovedPermanently
(this RedirectToRouteResult redirection)
{
return new PermanentRedirectToRouteResult(redirection);
}
}
public class PermanentRedirectToRouteResult : ActionResult
{
public RedirectToRouteResult Redirection { get; private set; }
public PermanentRedirectToRouteResult(RedirectToRouteResult redirection)
{
this.Redirection = redirection;
}
public override void ExecuteResult(ControllerContext context)
{
// After setting up a normal redirection, switch it to a 301
Redirection.ExecuteResult(context);
context.HttpContext.Response.StatusCode = 301;
context.HttpContext.Response.Status = "301 Moved Permanently";
}
}
public static class StringExtensions
{
private static readonly Encoding Encoding = Encoding.GetEncoding("Cyrillic");
public static string RemoveAccent(this string value)
{
byte[] bytes = Encoding.GetBytes(value);
return Encoding.ASCII.GetString(bytes);
}
public static string ToSlug(this string value)
{
if (string.IsNullOrWhiteSpace(value))
{
return string.Empty;
}
var str = value.RemoveAccent().ToLowerInvariant();
str = Regex.Replace(str, #"[^a-z0-9\s-]", "");
str = Regex.Replace(str, #"\s+", " ").Trim();
str = str.Substring(0, str.Length <= 200 ? str.Length : 200).Trim();
str = Regex.Replace(str, #"\s", "-");
str = Regex.Replace(str, #"-+", "-");
return str;
}
}