How would one get resx resource strings into javascript code stored in a .js file?
If your javascript is in a script block in the markup, you can use this syntax:
<%$Resources:Resource, FieldName %>
and it will parse the resource value in as it renders the page... Unfortunately, that will only be parsed if the javascript appears in the body of the page. In an external .js file referenced in a <script> tag, those server tags obviously never get parsed.
I don't want to have to write a ScriptService to return those resources or anything like that, since they don't change after the page is rendered so it's a waste to have something that active.
One possibility could be to write an ashx handler and point the <script> tags to that, but I'm still not sure how I would read in the .js files and parse any server tags like that before streaming the text to the client. Is there a line of code I can run that will do that task similarly to the ASP.NET parser?
Or does anyone have any other suggestions?
Here is my solution for now. I am sure I will need to make it more versatile in the future... but so far this is good.
using System.Collections;
using System.Linq;
using System.Resources;
using System.Web.Mvc;
using System.Web.Script.Serialization;
public class ResourcesController : Controller
{
private static readonly JavaScriptSerializer Serializer = new JavaScriptSerializer();
public ActionResult GetResourcesJavaScript(string resxFileName)
{
var resourceDictionary = new ResXResourceReader(Server.MapPath("~/App_GlobalResources/" + resxFileName + ".resx"))
.Cast<DictionaryEntry>()
.ToDictionary(entry => entry.Key.ToString(), entry => entry.Value.ToString());
var json = Serializer.Serialize(resourceDictionary);
var javaScript = string.Format("window.Resources = window.Resources || {{}}; window.Resources.{0} = {1};", resxFileName, json);
return JavaScript(javaScript);
}
}
// In the RegisterRoutes method in Global.asax:
routes.MapRoute("Resources", "resources/{resxFileName}.js", new { controller = "Resources", action = "GetResourcesJavaScript" });
So I can do
<script src="/resources/Foo.js"></script>
and then my scripts can reference e.g. window.Resources.Foo.Bar and get a string.
There's no native support for this.
I built a JavaScriptResourceHandler a while ago that can serve Serverside resources into the client page via objects where each property on the object represents a localization resource id and its value. You can check this out and download it from this blog post:
http://www.west-wind.com/Weblog/posts/698097.aspx
I've been using this extensively in a number of apps and it works well. The main win on this is that you can localize your resources in one place (Resx or in my case a custom ResourceProvider using a database) rather than having to have multiple localization schemes.
whereas "Common" is the name of the resource file and Msg1 is the fieldname. This also works for culture changes.
Partial Javascript...:
messages:
{
<%=txtRequiredField.UniqueID %>:{
required: "<%=Resources.Common.Msg1 %>",
maxlength: "Only 50 character allowed in required field."
}
}
In a nutshell, make ASP.NET serve javascript rather than HTML for a specific page. Cleanest if done as a custom IHttpHandler, but in a pinch a page will do, just remember to:
1) Clear out all the ASP.NET stuff and make it look like a JS file.
2) Set the content-type to "text/javascript" in the codebehind.
Once you have a script like this setup, you can then create a client-side copy of your resources that other client-side scripts can reference from your app.
If you have your resources in a separate assembly you can use the ResourceSet instead of the filename. Building on #Domenics great answer:
public class ResourcesController : Controller
{
private static readonly JavaScriptSerializer Serializer = new JavaScriptSerializer();
public ActionResult GetResourcesJavaScript()
{
// This avoids the file path dependency.
ResourceSet resourceSet = MyResource.ResourceManager.GetResourceSet(CultureInfo.CurrentUICulture, true, true);
// Create dictionary.
var resourceDictionary = resourceSet
.Cast<DictionaryEntry>()
.ToDictionary(entry => entry.Key.ToString(), entry => entry.Value.ToString());
var json = Serializer.Serialize(resourceDictionary);
var javaScript = string.Format("window.Resources = window.Resources || {{}}; window.Resources.resources = {1};", json);
return JavaScript(javaScript);
}
}
The downside is that this will not enable more than one resource-file per action. In that way #Domenics answer is more generic and reusable.
You may also consider using OutputCache, since the resource won't change a lot between requests.
[OutputCache(Duration = 3600, Location = OutputCacheLocation.ServerAndClient)]
public ActionResult GetResourcesJavaScript()
{
// Logic here...
}
http://www.asp.net/mvc/overview/older-versions-1/controllers-and-routing/improving-performance-with-output-caching-cs
I usually pass the resource string as a parameter to whatever javascript function I'm calling, that way I can continue to use the expression syntax in the HTML.
I the brown field application I'm working on we have an xslt that transforms the resx file into a javascript file as part of the build process. This works well since this is a web application. I'm not sure if the original question is a web application.
use a hidden field to hold the resource string value and then access the field value in javascript
for example :
" />
var todayString= $("input[name=TodayString][type=hidden]").val();
Add the function in the BasePage class:
protected string GetLanguageText(string _key)
{
System.Resources.ResourceManager _resourceTemp = new System.Resources.ResourceManager("Resources.Language", System.Reflection.Assembly.Load("App_GlobalResources"));
return _resourceTemp.GetString(_key);
}
Javascript:
var _resurceValue = "<%=GetLanguageText("UserName")%>";
or direct use:
var _resurceValue = "<%= Resources.Language.UserName %>";
Note:
The Language is my resouce name. Exam: Language.resx and Language.en-US.resx
I have a controller which has set some values and I am returning the ModelAndView Object. Now I am able to access this object in the Thyme-leaf but unable to access in the javascript file. Any suggestions?
I tried using
[CDATA[/ ... var username = /[[${session.user.name}]]/ 'Sebastian'; ... /]]>
It worked perfectly when I am writing the script in thymeleaf page itself but it doesn't work when I am creating the separate JavaScript file and writing the same code
Can I somehow use client-side javascript variables in pug file, for loop in objects or in arrays? Like I have some array in client-side js file: var someArray, and I wont too send this array in pug file for loop into it... is it possible?
If you are running pug client side (as per the browser support section of the homepage), then you just pass the value into the compiled template.
var locals = {
someName: someArray
}
var fn = pug.compile('string of pug', options);
var html = fn(locals);
If you are running pug server side, then you will have to make multiple requests to the server as described in What is the difference between client-side and server-side programming?.
It's JQuery code using asp.net mvc razor.There is error in 3rd line.
How can I give Javascript variable in #Url.Content method
var hrf = $(".btndiv a").attr("href");
hrf = "~"+hrf;
hrf = #Url.Content(hrf);
Scenario:
I'm getting html from database. But I have to resolve (~) tag.
Getting html like from db is:
<a class="btn btnBlue" href="~/Order/Cricket?id=29">View order (A)</a>
You wont be able to convert JavaScript variable to a Razor variable. Where Razor variable is handled by Razor engine where as JavaScript on the other hand is a client side language running on the client.
You can store Razor variable as base URL in a JavaScript variable which can be used later.
var baseUrl = '#Url.Content("~")'; //Store base URL
var hrf = $(".btndiv a").attr("href");
hrf = hrf.replace("~", baseUrl); //Use it as required
I have an app written in webapp2 using Google App Engine. The page I want to render needs to use some variables from the backend. How can I pass variables from Python to Javascript as a JSON object?
Thanks!
//define your values dictionary
template_values = {"name": name,
"other_value" : other values}
//render your template
template = jinja_environment.get_template("path to my html file")
return self.response.write(template.render(template_values))
then in your html you can use {{name}}
In your template file, you'd need to do something like:
<script>
var your_js_object = {{your_json_dump}}
</script>
This isn't ideal, as it means that your_js_object is global, but you'd have access to the object in your js files.