I'm using the "less-rails" gem to get less integrated into my rails app.
In my "applications.css.less" file, I'm importing other LESS files into it. When I make a change to any of the imported files I need to re-save the "application.css.less" file in order for it to pick up the change.
How can I have the "applications.css.less" file recompile automatically when one of the imported files are changed?
found a solution mentioned here: https://github.com/metaskills/less-rails/issues/80
gem 'less-rails', github: 'dv/less-rails', branch: 'fix-import-dependencies'
wont work with livereload tho so im back to cmd + r
This is an old problem and unfortunately there is no way to do this with native way. The LESS compiler just watches modified files. So, if you are using a file with imports, this file needs modified and recompiled.
In development enviroment (with javascript) you can solve this issue putting this to clear cache:
<link rel="stylesheet/less" type="text/css" href="/css/style.less"/>
<script src="/js/less-1.1.5.min.js" type="text/javascript"></script>
<script>
less = {env:'development'};
function destroyLessCache(pathToCss) { // e.g. '/css/' or '/stylesheets/'
if (!window.localStorage || !less || less.env !== 'development') {
return;
}
var host = window.location.host;
var protocol = window.location.protocol;
var keyPrefix = protocol + '//' + host + pathToCss;
for (var key in window.localStorage) {
if (key.indexOf(keyPrefix) === 0) {
delete window.localStorage[key];
}
}
}
window.onload=destroyLessCache('/css/');
</script>
Reference: https://github.com/cloudhead/less.js/issues/47
My other less files were not going through the asset pipline. Once I fixed this and imported them into my "application.css.less" file, "application.css.less" began recompiling automatically when the other files changed.
Related
are any alternatives for compile .scss files in action in ASP.NET MVC controller?
I have /Content folder with two files: main.scss and external.scss. In my controller I'm using NSASS package:
public ActionResult GetCss(string scssPath)
{
string scss = #"#import """ + Server.MapPath(scssPath) + #""";";
var compiler = new SassCompiler();
string compiled = compiler.Compile(source: scss);
return Content(compiled.ToString(), "text/css");
}
my view:
<link href="#Url.Action("GetCss", "Theme", new { scssPath="~/Content/sass/main.scss" })" rel="stylesheet" type="text/css" />
main.scss file:
#import "external";
I have error
Error: File to import not found or unreadable: external
I tried to write #import "external.scss" but same problem.
We have the same (or similar problem). The problem I'm seeing is that SassCompiler is trying to find the #import files relative to the current working directory, instead of relative to the file which contains the #import.
There might be a few ways around this depending on what you're trying to do.
My workaround consisted of making a temporary copy of the directory structure and then updating all the #import statements in each file to make them relative to the working directory before compiling.
UPDATE
I got this working without this hack by passing in all the paths to the 'includePaths' parameter. I had tried this before without success because I was using relative paths. If you use absolute paths then it works.
NSass is outdated. It was updated last time in 2013 and can't compile many new scss syntaxes, but if you want to compile few simple lines and have rest precompiled, here's simplest solution I came up with.
string scss = System.IO.File.ReadAllText(AppDomain.CurrentDomain.BaseDirectory + #"\Design\Scss\custom.scss");
scss += "$primary: #f80;$secondary: #0f2;";
Btw, if you would like to import other scss files into your main scss file, you can use following code but note I'm not good at Regex and thins it might have flaws.
scss = Regex.Replace(scss, "import \"", m=> m + AppDomain.CurrentDomain.BaseDirectory + #"Design\Scss\");
I worked with CKEditor on my .Net Mvc4 project. On localhost all works well, but after publishing project to server is not initialising:
"Uncaught TypeError: Cannot set property 'dir' of undefined"
I fixed this by adding code line before editor initialization:
CKEDITOR.basePath = '//some url/ckeditor/'
After that, the ckeditor is working but refusing to open image upload dialog:
error in ckeditor plugins image.js
Uncaught Error: [CKEDITOR.dialog.openDialog] Dialog "image" failed when loading definition.
There is no any changes in my ckeditor folder. The version is: 4.4.5
Any solutions please?
Check the "Network" tab in your browser for HTTP 404 errors. It looks like the file that contains Image Dialog definition is not available. Either it is not present (e.g. has been accidentally removed) or you have some weird url rewrite issues.
Check in your CKEDITOR.basePath plugins folder image plugin is in there, if not then add it and wala working like a charm ! hope it helps !
Issue
You are getting the error from only including the ckeditor.js (or ckeditor4.js since 4.13) file on server, with this error becoming raised when CKE attempts to load other features such as plugins and languages but cannot find these files in the basepath folder. You can confirm this from the network tab in browser devtools, as CKE attempts to load features, then cannot find them.
Option 1: Link to a CDN Bundle
CKE offers 3 primary bundles (basic, standard, full) which offer a choice between features and page load. More info here.
Option 2: Include Necessary Files
Make the extra files available on your server.
Here's a gulp task which bundles everything from the ckeditor node module folder (excluding the sample).
gulp.task("copy-ckeditor", function () {
// Check and copy languages in config.ckEditorLanguages
var isIncluded = function(path) {
var found = false,
lang = path.split('lang')[1];
if (lang) {
for (var i in config.ckEditorLanguages) {
if (lang.indexOf(config.ckEditorLanguages[i]) != -1) {
found = true;
}
}
}
return found;
},
copyFile = function(stream) {
stream.pipe(gulp.dest(config.buildPath.js + "lib/ckeditor"));
};
return gulp.src([
"node_modules/ckeditor/**/*.*",
"!node_modules/ckeditor/samples",
"!node_modules/ckeditor/samples/**/*"
])
.pipe(foreach(function(stream, file){
if (file.path.indexOf("lang") != -1) {
if (isIncluded(file.path)) {
copyFile(stream);
}
} else {
copyFile(stream);
}
return stream;
}));
});
Option 3: Build and Host Your Own Custom Bundle
If you want to use a single file load, you can use the CKE4 Builder allowing you to customise built-in plugins.
I am adding the following ScriptBundle in BundleConfig:
bundles.Add(new ScriptBundle("~/bundles/javascript").Include(
"~/Scripts/jquery-1.*",
"~/Scripts/load-image.min.js",
"~/Scripts/bootstrap.*",
"~/Scripts/bootstrap-image-gallery.*",
"~/Scripts/my.global.js"));
This is referenced at the end of my _Layout.cshtml as:
#Scripts.Render("~/bundles/javascript")
When debugging I notice that the output of this script rendering is:
<script src="/Scripts/jquery-1.8.2.js"></script>
<script src="/Scripts/bootstrap.js"></script>
<script src="/Scripts/bootstrap-image-gallery.js"></script>
<script src="/Scripts/my.global.js"></script>
Notice the load-image.min.js script is missing? What I want is to use that same minified script whether I'm debugging or not. Under release conditions the script is included in the bundled JS file.
I assume it's seeing the 'min', looking for an un-minified version, not finding one, then deciding what's best is to ignore it entirely. Brilliant. If I make a copy of load-image.min.js, call it load-image.js and then reference it in BundleConfig as "load-image.*" I find it is included in both configurations but what's the point of having to do that?
I assume I'm missing something here. I don't have the un-minified version and I frankly don't care about it. It's used by my Bootstrap image gallery plugin and nothing else. Any ideas out there?
This behavior has been improved (fixed) in the 1.1.0-alpha1 release. We moved all of the old default ignore list entries into a new DirectoryFilter ignore list that are only used when including search patterns like *.js which was the origional intent for this functionality. As a result this should no longer be an issue when you are including individual files explicitly.
Note: the one place this might still be an issue is if you try to include something like jquery-{version}.min.js.
There is ignoreList, which you can clear if you need, it looks like:
public static void AddDefaultIgnorePatterns(IgnoreList ignoreList)
{
if (ignoreList != null)
{
ignoreList.Ignore("*.intellisense.js");
ignoreList.Ignore("*-vsdoc.js");
ignoreList.Ignore("*.debug.js", OptimizationMode.WhenEnabled);
ignoreList.Ignore("*.min.js", OptimizationMode.WhenDisabled);
ignoreList.Ignore("*.min.css", OptimizationMode.WhenDisabled);
return;
}
else
{
throw new ArgumentNullException("ignoreList");
}
}
More details: Advanced Options of ASP.NET Bundling and Minification
Im currently in the process of porting a completely static site using trigger io to convert it to an app. The site comprises of lots of folders in folders with index.html files in them to make the urls nice. The site uses absolute urls to include stylesheets, javascripts, on a tags, and images in every page.
I would like to set a root directory for trigger.io, but I cannot find any way of doing this. Is this even possible?
Cheers,
Rich
Edit:
Example:
<script src="/json.js" type="text/javascript"></script>
<img alt="Bar_hat" class="bar_hat" src="/assets/bar_hat-09efbabebef04dd368425a6b71badfa7.jpg" />
The script tag is in all of the files.
The img tag is used in 90% of the files. These are obviously not being found from within the app.
Copy your "assests" directory to the "src" directory and use without a "slash" before assets -
<img alt="Bar_hat" class="bar_hat" src="assets/bar_hat-09efbabebef04dd368425a6b71badfa7.jpg" />
Also, if you want to access via javascript you must use this pattern:
forge.file.getUrl("assets/bar_hat-09efbabebef04dd368425a6b71badfa7.jpg",
function(file) {
// If using zepto or jquery
$("#whateverImage").attr("src", file);
},
function(err) {
// error
}
);
Edit: getUrl vs getLocal
So I was reading this stackoverflow post about "autoversioning" in ASP.NET MVC for CSS/JS files and was wondering what the "best" strategy is to do this.
The solution provided inserts an assembly number - which means everytime you publish - it will change EVERY SINGLE file which is not ideal because if you make modifications to just 1 *.css or *.js then it will change each and every file.
1) How can it be done just for "single files" instead of using site wide assembly using modification date or something on IIS7 ?
2) Also if I have some sort of "static" asset like - http://static.domain.com/js/123.js - how can I use rewrite to send the latest file for a request if someone has integrated this static link onto their site ?
i.e. http://static.domain.com/js/123.js is the link and when a request comes for this - check and send latest file ?
ASP.NET 4.5+ comes with a built-in bundling & minification framework
which is designed to solve this problem.
If you absolutely need a simple roll-your-own solution you can use the answer below, but I would always say the correct way is to use a bundling & minification framework.
You can modify the AssemblyInfo.cs file like so:
Change
[assembly: AssemblyVersion("1.0.0.0")]
to
[assembly: AssemblyVersion("1.0.*")]
This means that every time the project is built, it will have a new assembly version which is higher than the previous one. Now you have your unique version number.
Create an UrlHelperExtension class that will help get this information when needed in the views:
public static class UrlHelperExtensions
{
public static string ContentVersioned(this UrlHelper self, string contentPath)
{
string versionedContentPath = contentPath + "?v=" + Assembly.GetAssembly(typeof(UrlHelperExtensions)).GetName().Version.ToString();
return self.Content(versionedContentPath);
}
}
You can now easily add a version number to your views in the following manner:
<link href="#Url.ContentVersioned("style.css")" rel="stylesheet" type="text/css" />
When viewing your page source you will now have something that looks like
<link href="style.css?v=1.0.4809.30029" rel="stylesheet" type="text/css" />
UPDATE: The previous version did not work on Azure, I have simplified and corrected below. (Note, for this to work in development mode with IIS Express, you will need to install URL Rewrite 2.0 from Microsoft http://www.iis.net/downloads/microsoft/url-rewrite - it uses the WebPi installer, make sure to close Visual Studio first)
If you would like to change the actual names of the files, rather than appending a querystring (which is ignored by some proxies / browsers for static files) You can follow the following steps: (I know this is an old post, but I ran across it while developing a solution:
How to do it: Auto-increment the assembly version every time the project is built, and use that number for a routed static file on the specific resources you would like to keep refreshed. (so something.js is included as something.v1234.js with 1234 automatically changing every time the project is built) - I also added some additional functionality to ensure that .min.js files are used in production and regular.js files are used when debugging (I am using WebGrease to automate the minify process) One nice thing about this solution is that it works in local / dev mode as well as production. (I am using Visual Studio 2015 / Net 4.6, but I believe this will work in earlier versions as well.
Step 1: Enable auto-increment on the assembly when built
In the AssemblyInfo.cs file (found under the "properties" section of your project change the following lines:
[assembly: AssemblyVersion("1.0.0.0")]
[assembly: AssemblyFileVersion("1.0.0.0")]
to
[assembly: AssemblyVersion("1.0.*")]
//[assembly: AssemblyFileVersion("1.0.0.0")]
Step 2: Set up url rewrite in web.config for files with embedded version slugs (see step 3)
In web.config (the main one for the project) add the following rules in the <system.webServer> section I put it directly after the </httpProtocol> end tag.
<rewrite>
<rules>
<rule name="static-autoversion">
<match url="^(.*)([.]v[0-9]+)([.](js|css))$" />
<action type="Rewrite" url="{R:1}{R:3}" />
</rule>
<rule name="static-autoversion-min">
<match url="^(.*)([.]v[0-9]+)([.]min[.](js|css))$" />
<action type="Rewrite" url="{R:1}{R:3}" />
</rule>
</rules>
</rewrite>
Step 3: Setup Application Variables to read your current assembly version and create version slugs in your js and css files.
in Global.asax.cs (found in the root of the project) add the following code to protected void Application_Start() (after the Register lines)
// setup application variables to write versions in razor (including .min extension when not debugging)
string addMin = ".min";
if (System.Diagnostics.Debugger.IsAttached) { addMin = ""; } // don't use minified files when executing locally
Application["JSVer"] = "v" + System.Reflection.Assembly.GetExecutingAssembly().GetName().Version.ToString().Replace('.','0') + addMin + ".js";
Application["CSSVer"] = "v" + System.Reflection.Assembly.GetExecutingAssembly().GetName().Version.ToString().Replace('.', '0') + addMin + ".css";
Step 4: Change src links in Razor views using the application variables we set up in Global.asax.cs
#HttpContext.Current.Application["CSSVer"]
#HttpContext.Current.Application["JSVer"]
For example, in my _Layout.cshtml, in my head section, I have the following block of code for stylesheets:
<!-- Load all stylesheets -->
<link rel='stylesheet' href='https://fontastic.s3.amazonaws.com/8NNKTYdfdJLQS3D4kHqhLT/icons.css' />
<link rel='stylesheet' href='/Content/css/main-small.#HttpContext.Current.Application["CSSVer"]' />
<link rel='stylesheet' media='(min-width: 700px)' href='/Content/css/medium.#HttpContext.Current.Application["CSSVer"]' />
<link rel='stylesheet' media='(min-width: 700px)' href='/Content/css/large.#HttpContext.Current.Application["CSSVer"]' />
#RenderSection("PageCSS", required: false)
A couple things to notice here: 1) there is no extension on the file. 2) there is no .min either. Both of these are handled by the code in Global.asax.cs
Likewise, (also in _Layout.cs) in my javascript section: I have the following code:
<script src="~/Scripts/all3bnd100.min.js" type="text/javascript"></script>
<script src="~/Scripts/ui.#HttpContext.Current.Application["JSVer"]" type="text/javascript"></script>
#RenderSection("scripts", required: false)
The first file is a bundle of all my 3rd party libraries I've created manually with WebGrease. If I add or change any of the files in the bundle (which is rare) then I manually rename the file to all3bnd101.min.js, all3bnd102.min.js, etc... This file does not match the rewrite handler, so will remain cached on the client browser until you manually re-bundle / change the name.
The second file is ui.js (which will be written as ui.v12345123.js or ui.v12345123.min.js depending on if you are running in debug mode or not) This will be handled / rewritten. (you can set a breakpoint in Application_OnBeginRequest of Global.asax.cs to watch it work)
Full discussion on this at: Simplified Auto-Versioning of Javascript / CSS in ASP.NET MVC 5 to stop caching issues (works in Azure and Locally) With or Without URL Rewrite (including a way to do it WITHOUT URL Rewrite)
1)
Use file modification time instead. Here's an example:
public static string GeneratePathWithTime(string cssFileName)
{
var serverFilePath = server.MapPath("~/static/" + cssFileName);
var version = File.GetLastWriteTime(serverFilePath).ToString("yyyyMMddhhmmss");
return string.Format("/static/{0}/{1}", version, cssFileName);
}
This will generate a path like "/static/201109231100/style.css" for "style.css" (assuming the your style.css is located in the static directory).
You'll then add a rewrite rule in IIS to rewrite "/static/201109231100/style.css" to "/static/style.css". The version number will only be changed when the css file has been modified and only applies to modified files.
2)
You can handle the request to 123.js via an HttpModule and send the latest content of it, but I don't think you can guarantee the request gets the latest version. It depends on how the browser handles its cache. You can set an earlier expiration time (for example, one minute ago) in your response header to tell the browsers to always re-download the file, but it's all up to the browser itself to decide whether to re-download the file or not. That's why we need to generate a different path for our modified files each time we updated our files in your question 1), the browser will always try to download the file if the URL has never been visited before.
I wrote a Url Helper which does the CacheBusting for me.
public static string CacheBustedContent(this UrlHelper helper, string contentPath)
{
var path = string.Empty;
if (helper.RequestContext.HttpContext.Cache["static-resource-" + contentPath] == null)
{
var fullpath = helper.RequestContext.HttpContext.Server.MapPath(contentPath);
var md5 = GetMD5HashFromFile(fullpath);
path = helper.Content(contentPath) + "?v=" + md5;
helper.RequestContext.HttpContext.Cache.Add("static-resource-" + contentPath, path, null, System.Web.Caching.Cache.NoAbsoluteExpiration, new TimeSpan(24, 0, 0), System.Web.Caching.CacheItemPriority.Default, null);
}
else
{
path = helper.RequestContext.HttpContext.Cache["static-resource-" + contentPath].ToString();
}
return path;
}
You could replace the GetMD5HashFromFile() with CRC or any other sort of call which generates a unique string based on the contents or last-modified-date of the file.
The downside is this'll get called whenever the cache is invalidated. And if you change the file on live somehow, but don't reset the application pool, you'll probably need to touch the web.config to get it to reload correctly.
You might want to have a look at Dean Hume's Blogpost MVC and the HTML5 Application Cache. In that post, he points out an elegant way of automatically handling versioning per request, using a class library of #ShirtlessKirk:
#Url.Content("~/Content/Site.css").AppendHash(Request)
This question is really old now, but if anyone stumbles upon it, here's to my knowledge the current state of the art:
In ASP.NET Core you can use TagHelpers and simply add the asp-append-version attribute to any <link> or <script> tag:
<script src="~/js/my.js" asp-append-version="true"></script>
For both ASP.NET Core and Framework there is a NuGet Package called WebOptimizer (https://github.com/ligershark/WebOptimizer). It allows for both bundling and minification, and will also append a content-based version string to your file.
If you want to do it yourself, there is the handy IFileVersionProvider interface, which you can get from your IServiceProvider in .NET Core:
// this example assumes, you at least have a HttpContext
var fileVersionProvider = httpContext.RequestServices.GetRequiredService<IFileVersionProvider>();
string path = httpContext.Content("/css/site.css");
string pathWithVersionString = fileVersionProvider.AddFileVersionToPath(httpContext.Request.PathBase, path);
For .NET Framework, you can get the FileVersionProvider source from here: https://github.com/dotnet/aspnetcore/blob/main/src/Mvc/Mvc.Razor/src/Infrastructure/DefaultFileVersionProvider.cs
You will have to do some work, like replacing the Cache with MemoryCache.Default or a ConcurrentDictionary or something, but the 'meat' is there.