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License: Apache License 2.0
Template engine based on Microsoft's Razor parsing engine for .NET Core
License: Apache License 2.0
My code:
var engine = EngineFactory.CreatePhysical(@"D:\engine");
string content = "@foreach (var x in @Model.Items){<li>@x.Name</li>}";
var model = new
{
Name = "John Doe",
Title = "RazorLight",
Items = new List<object>
{
new
{
Name = "a"
},
new
{
Name = "B"
}
}
};
string result = engine.ParseString(content, model);
Error:
Additional information: 'object' does not contain a definition for 'Name'
Hi,
I would like to use your library for email-templates, which contains links to the application itself. Sadly, RazorLight seems to parse razor code, but not the ASP.NET Core TagHelpers. For example, the asp-controller and asp-action attribute to generate an action-controller link like this:
<a asp-controller="Account" asp-action="Login">Test</a>
Using dependency injection, a instance of IRazorLightEngine
is injected in my constructor. There I call the Parse
method like this:
var html = razorEngineLight.Parse("Shared/Test.cshtml", new object());
But in the rendered html, I don't get a parsed link like
<a href="/Account/Login">Test</a>
as expected. Instead, I get 1:1 the source code with asp-controller and action attribute like showed above. So it seems that the _ViewImports.cshtml
file in the View-folder is not globally parsed like ASP.NET Core do it. I tried to add the tag helpers manually using
@addTagHelper *, Microsoft.AspNetCore.Mvc.TagHelpers
in the Razor-View, but its not working. As a workaround, I tried to use the old UrlHelpers from ASP.NET like this way:
@{
var link = Url.Action("Login", "Account", null);
}
<a href="@link">Testlink</a>
This is valid code, as it works in a normal Razor-View. But using RazorLight, I got a RazorLight.TemplateCompilationException: Failed to compile generated razor view. See CompilationErrors for detailed information
. In the details, Visual Studio show me that there is one CompilationError (Cound = 1) but there seems no way to extend or otherwise view them.
As a result, it seems not possible to create action-controller links using Razor, which is a problem in my point of view. Would be pleased if this could be fixed.
Engine Configuration has a collection property called Namespaces. Is this where I can add namespaces that are used in the html instead of putting the using namespaces in the html? If so, what is the format. I tried adding namespaces and it still didn't work. This will be very useful for a lot templates I have that use the namespaces defined in the web.config instead explicitly putting them in the razor.
Thanks
We have been using RazorEngine in a few projects and it seems to create a bunch of compiled artifacts on the file system that require cleanup. Out of curiosity, does RazorLight leave anything in the filesystem that requires cleanup?
Hi,
This code throws RuntimeBinderException (Additional information: 'System.Dynamic.ExpandoObject' does not contain a definition for 'price')
var engine = EngineFactory.CreatePhysical("D:\\views");
var obj = new ExpandoObject();
dynamic dynamicObj = obj;
dynamicObj.price = 30;
engine.Parse("test.cshtml", obj);
I believe problem occurs because of this line:
https://github.com/toddams/RazorLight/blob/master/src/RazorLight/ModelTypeInfo.cs#L42
Seems that ToExpando() doesn't handle ExpandoObject parameter correctly, as it returns new empty ExpandoObject as a result.
Thanks!
Now it's not possible to pass EngineConfiguration to EngineFactory to create an engine with a specified configuration. The only way to solve this, is to create engine by hands. Here is an example how to do it for physical files engine
ITemplateManager manager = new FilesystemTemplateManager(root);
ICompilerCache compilerCache = new TrackingCompilerCache(root);
var config = EngineConfiguration.Default;
//Here it is, add something to config file.
config.Activator = new MyFancyTypeActivator();
config.Namespaces.Add("System.Diagnostics");
IEngineCore core = new EngineCore(manager, compilerCache, config); //Pass it here
IPageFactoryProvider pageFactory = new DefaultPageFactory(core.KeyCompile, compilerCache);
IPageLookup pageLookup = new FilesystemPageLookup(pageFactory);
var engine = new RazorLightEngine(core, pageLookup);
When project is deployed to Azure, I get an exception below when trying to use RazorLight. In development enviroment everything works ok. Any ideas why this may happen?
System.InvalidOperationException: Can not find compilation library location for package 'microsoft.netcore.portable.compatibility'
at Microsoft.Extensions.DependencyModel.CompilationLibrary.ResolveReferencePaths()
at RazorLight.UseEntryAssemblyMetadataResolver.GetMetadataReferences()
at System.Threading.LazyInitializer.EnsureInitializedCore[T](T& target, Boolean& initialized, Object& syncLock, Func`1 valueFactory)
at RazorLight.Compilation.RoslynCompilerService.get_CompilationReferences()
at RazorLight.Compilation.RoslynCompilerService.Compile(CompilationContext context)
at RazorLight.EngineCore.CompileSource(ITemplateSource templateSource, ModelTypeInfo modelTypeInfo)
at RazorLight.EngineCore.KeyCompile(String key)
at RazorLight.Templating.DefaultPageFactory.CreateFactory(String key)
at RazorLight.Templating.DefaultPageLookup.GetPage(String key)
at RazorLight.RazorLightEngine.Parse(String key, Object model, Type modelType, ExpandoObject viewBag, Action`1 prerenderCallback)
at RazorLight.RazorLightEngine.Parse[T](String key, T model)
at CheapWatcher.Services.NotificationService.SendConfirmRegistrationEmail(ConfirmRegistration arguments) in C:\Projects\CheapWatcher\src\CheapWatcher.Services\NotificationService.cs:line 65
at CheapWatcher.Web.Controllers.AccountController.<Register>d__7.MoveNext() in C:\Projects\CheapWatcher\src\CheapWatcher.Web\Controllers\AccountController.cs:line 98
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()
at Microsoft.AspNetCore.Mvc.Internal.ObjectMethodExecutor.<CastToObject>d__40`1.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()
at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.<InvokeActionMethodAsync>d__27.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.GetResult()
at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.<InvokeNextActionFilterAsync>d__25.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.Rethrow(ActionExecutedContext context)
at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.Next(State& next, Scope& scope, Object& state, Boolean& isCompleted)
at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.<InvokeNextResourceFilter>d__22.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.Rethrow(ResourceExecutedContext context)
at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.Next(State& next, Scope& scope, Object& state, Boolean& isCompleted)
at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.<InvokeAsync>d__20.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.GetResult()
at Microsoft.AspNetCore.Builder.RouterMiddleware.<Invoke>d__4.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.GetResult()
at Microsoft.AspNetCore.Session.SessionMiddleware.<Invoke>d__9.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at Microsoft.AspNetCore.Session.SessionMiddleware.<Invoke>d__9.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.GetResult()
at Microsoft.AspNetCore.Authentication.AuthenticationMiddleware`1.<Invoke>d__18.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at Microsoft.AspNetCore.Authentication.AuthenticationMiddleware`1.<Invoke>d__18.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.GetResult()
at Microsoft.AspNetCore.Authentication.AuthenticationMiddleware`1.<Invoke>d__18.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at Microsoft.AspNetCore.Authentication.AuthenticationMiddleware`1.<Invoke>d__18.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.GetResult()
at Microsoft.AspNetCore.Authentication.AuthenticationMiddleware`1.<Invoke>d__18.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at Microsoft.AspNetCore.Authentication.AuthenticationMiddleware`1.<Invoke>d__18.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.GetResult()
at Microsoft.AspNetCore.Authentication.AuthenticationMiddleware`1.<Invoke>d__18.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at Microsoft.AspNetCore.Authentication.AuthenticationMiddleware`1.<Invoke>d__18.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.GetResult()
at Microsoft.AspNetCore.Cors.Infrastructure.CorsMiddleware.<Invoke>d__7.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.GetResult()
at Microsoft.AspNetCore.Server.IISIntegration.IISMiddleware.<Invoke>d__8.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.GetResult()
at Microsoft.AspNetCore.Hosting.Internal.RequestServicesContainerMiddleware.<Invoke>d__3.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd(Task task)
at Microsoft.AspNetCore.Server.Kestrel.Internal.Http.Frame`1.<RequestProcessingAsync>d__2.MoveNext()
If I use from a .netcore 2.0 app I get:
when trying to parse (I think this is compile errors when compiling the template)
How does the compiler know which assemblies to use?
RazorLight.TemplateCompilationException: 'Failed to compile generated Razor template:
- The type or namespace name 'Linq' does not exist in the namespace 'System' (are you missing an assembly reference?)
- The type or namespace name 'Threading' does not exist in the namespace 'System' (are you missing an assembly reference?)
- Cannot define a class or member that utilizes 'dynamic' because the compiler required type 'System.Runtime.CompilerServices.DynamicAttribute' cannot be found. Are you missing a reference?
- Predefined type 'System.Boolean' is not defined or imported
- The type 'Object' is defined in an assembly that is not referenced. You must add a reference to assembly 'System.Runtime, Version=4.1.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'.
- The return type of an async method must be void, Task or Task<T>
- The type 'Object' is defined in an assembly that is not referenced. You must add a reference to assembly 'System.Runtime, Version=4.1.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'.
- Predefined type 'System.Object' is not defined or imported
- The type or namespace name 'Task' could not be found (are you missing a using directive or an assembly reference?)
- 'ArmLinkerScriptTemplate_template.ExecuteAsync()': return type must be 'Task' to match overridden member 'TemplatePage.ExecuteAsync()'
- The type 'Task' is defined in an assembly that is not referenced. You must add a reference to assembly 'System.Threading.Tasks, Version=4.0.10.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'.
- Predefined type 'System.Void' is not defined or imported
I'm trying to support netcoreapp1.0 and net462 in my project.json but it fails to restore with error message:
error: Package RazorLight 1.0.0-beta3 is not compatible with net462 (.NETFramework,Version=v4.6.2). Package RazorLight 1.0.0-beta3 supports: netstandard1.6 (.NETStandard,Version=v1.6)
error: One or more packages are incompatible with .NETFramework,Version=v4.6.2.
I found on the homepage that
it is also possible to use it on full .NET Framework (>= 4.6.2)
Is it?
In .net core rc4 I am unable to enable this option.
My html for emails is stored in the db. I am using the ParseString. I have many emails to send that use different html strings. I ran a test to use the same html string with a new model with different properties. The parse time goes from 200 milliseconds and gradually increases about 25 milliseconds to parse. Why does the parse time increase at all? This can add up significantly when sending thousands of emails. Any way to support caching for parsing strings to reduce this gradual increase? I can see the first parse have the biggest time impact, but subsequent parsing of same string with different model properties should go down significantly and be fairly slower than the original parse. Right??
After upgrading to 1.0.0, I am unable to restore packages. I get the following error:
Version conflict detected for Microsoft.CodeAnalysis.CSharp.
DemoApp (>= 1.0.0) -> DemoApp.Library (>= 1.0.0) -> RazorLight (>= 1.0.0) -> Microsoft.CodeAnalysis.CSharp (>= 1.3.2)
DemoApp (>= 1.0.0) -> Microsoft.VisualStudio.Web.CodeGeneration.Design (>= 1.1.0) -> Microsoft.VisualStudio.Web.CodeGeneration.Utils (>= 1.1.0) -> Microsoft.CodeAnalysis.CSharp.Workspaces (>= 1.3.0) -> Microsoft.CodeAnalysis.CSharp (>= 1.3.0).
Downgrading to 1.0.0-rc2 resolves the issue.
The following should render different Hello World variants based on the current
runtime environment. It appears the addTagHelper directive is not being honored since it is what recognizes the environment tag.
@addTagHelper *, Microsoft.AspNetCore.Mvc.TagHelpers
<environment names="Development">
Hello World (Dev)
</environment>
<environment names="Staging,Production">
Hello World (Prod)
</environment>
project.json is using
"RazorLight.MVC": "1.0.0"
It looks like that model object passed to Parse method cannot be accessed in layout page.
Is it intentional or I missing something?
Hello,
I'm trying to send data with accent and special characters, but it's returning me the data in an incorrect way.
See my example, the result should be:
Olá - Olá
But it is returning:
Olá - Olá
My code:
public class TestModel
{
public string Name { get; set; }
}
public class Program
{
public static void Main(string[] args)
{
var model = new TestModel()
{
Name = "Olá"
};
var engine = EngineFactory.CreatePhysical(@"D:\");
string result = engine.ParseString("Olá - @Model.Name", model, model.GetType());
//=> "Olá? - Olá?"
}
}
Version: "RazorLight": "1.0.0"
I'm using razorlight to emulate a "Razor Website" from .NET4
I've got some cshtml files in my wwwroot folder, and a generic controller that handles all requests for .cshtml content containing an engine targeting appropriately. Everything seems to work reasonably well until I try to assign a layout to one of the cshtml pages.
The control returns the requested page as such
var result = await ParseAsync(path, model);
Response.StatusCode = 200;
return Content(result, "text/html");
I'm setting Layout the same way it looks like you do in you tests...
@{
Layout = "_layout.cshtml";
}
The layout and cshtml page being rendered are both in the engine's root path (wwwroot).
Any thoughts? Let me know if this isn't clear.
Hi I'd like to use RazorLight standalone in my FormFactory project, but I can't take a dependency on a prerelease package. Could it be released as a normal package?
thanks!
The following call exceptions on MAC
services.AddRazorLight(HostingEnvironment.WebRootPath);
The exception
The directory name '<path>' is invalid.
at System.IO.FileSystemWatcher..ctor(String path, String filter)
at System.IO.FileSystemWatcher..ctor(String path)
at Microsoft.Extensions.FileProviders.PhysicalFileProvider.CreateFileWatcher(String root)
at RazorLight.Caching.TrackingCompilerCache..ctor(String root)
at RazorLight.MVC.MvcServiceCollectionExtensions.AddRazorLight(IServiceCollection services, String
It looks like the path is being concatenated with iteself for some reason... for a path like
/project/src/wwwroot
the reported invalid is
/project/src/wwwroot/project/src/wwwroot
I can confirm the value being passed into the AddRazorLight call is correct (the value returned from HostingEnvironment.WebRootPath).
Hello. Thank you for the great library. It has simple features which are most important. I like this library.
I have a question. Is it possible to make it work with framework 4.6.1? For some reason I can't use next frameworks. So it would be great to make it work with .net 4.6.1.
Thanks.
Igor.
After latest version of vs2017 and sdk for .net core - getting
Message "Method not found: 'System.IServiceProvider Microsoft.Extensions.DependencyInjection.ServiceCollectionContainerBuilderExtensions.BuildServiceProvider(Microsoft.Extensions.DependencyInjection.IServiceCollection)'." string
$exception {System.MissingMethodException: Method not found: 'System.IServiceProvider Microsoft.Extensions.DependencyInjection.ServiceCollectionContainerBuilderExtensions.BuildServiceProvider(Microsoft.Extensions.DependencyInjection.IServiceCollection)'.
at RazorLight.MVC.MvcServiceCollectionExtensions.AddRazorLight(IServiceCollection services, String root, Action`1 config)
at air.Startup.ConfigureServices(IServiceCollection services)} System.MissingMethodException
Tried updating the package to for razorlight to rc3 and razorlight.mvc to 1.0.3
last try updated Microsoft.Extensions.DependencyInjection to latest version 1.2.preview1-24163
still same exception.
not sure if its a configuration issue I have or if it is something that is broken due to SDK updates.
Microsoft Visual Studio Enterprise 2017
Version 15.0.26228.10 D15RTWSVC
Microsoft .NET Framework
Version 4.6.01586
ASP.NET and Web Tools 2017 15.0.30223.0
ASP.NET Web Frameworks and Tools 2017 5.2.50127.0
.NET Core SDK 1.0.0
repro
using Microsoft.Extensions.PlatformAbstractions;
namespace ConsoleApplication {
public class Program {
public static void Main(string[] args) {
var engine =
RazorLight.EngineFactory.CreatePhysical(
PlatformServices.Default.Application.ApplicationBasePath
);
try {
System.Console.WriteLine(
engine.Parse(
"Template.cshtml",
new TemplateModel {
Source = "test",
Text = "text"
}
)
);
}
catch (RazorLight.TemplateCompilationException e) {
foreach (var item in e.CompilationErrors) {
System.Console.WriteLine(item);
}
}
}
}
public class TemplateModel {
public string Source { get; set; }
public string Text { get; set; }
}
}
Template.cshtml
<html>
<body>
<p>
<a href="@Model.Source">@Model.Text</a>
</p>
</body>
</html>
project.json
{
"version": "1.0.0-*",
"buildOptions": {
"emitEntryPoint": true,
"preserveCompilationContext": true,
"copyToOutput": [
"Template.cshtml"
]
},
"dependencies": {
"Microsoft.Extensions.PlatformAbstractions": "1.0.0",
"RazorLight": "1.0.0-beta2"
},
"frameworks": {
"netcoreapp1.0": {
"dependencies": {
"Microsoft.NetCore.App": {
"type": "platform",
"version": "1.0.0"
}
}
}
}
}
Errors:
The name 'BeginWriteAttribute' does not exist in the current context
The name 'WriteAttributeValue' does not exist in the current context
The name 'EndWriteAttribute' does not exist in the current context
No issues when @Model.Source removed from template
Hello,
I'm trying to use a non-anonymous object and am getting the following error:
Failed to compile generated razor view. See CompilationErrors for detailed information
public class TestModel
{
public string Name { get; set; }
}
var model = new TestModel()
{
Name = "John Doe"
};
var engine = EngineFactory.CreatePhysical(@"D:\");
string result = engine.ParseString("Hello @Model.Name ", model, model.GetType());
My software periodically compiles mail templates using RazorLight. On one of the installations (running under Linux) I got the following exception:
System.IO.IOException: Too many open files
at Interop.ThrowExceptionForIoErrno(ErrorInfo errorInfo, String path, Boolean isDirectory, Func`2 errorRewriter)
at Interop.CheckIo[TSafeHandle](TSafeHandle handle, String path, Boolean isDirectory, Func`2 errorRewriter)
at Microsoft.Win32.SafeHandles.SafeFileHandle.Open(String path, OpenFlags flags, Int32 mode)
at System.IO.UnixFileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share, Int32 bufferSize, FileOptions options, FileStream parent)
at System.IO.UnixFileSystem.Open(String fullPath, FileMode mode, FileAccess access, FileShare share, Int32 bufferSize, FileOptions options, FileStream parent)
at System.IO.FileStream.Init(String path, FileMode mode, FileAccess access, FileShare share, Int32 bufferSize, FileOptions options)
at Microsoft.Extensions.DependencyModel.FileWrapper.OpenRead(String path)
at Microsoft.Extensions.DependencyModel.DependencyContextLoader.LoadEntryAssemblyContext(IDependencyContextReader reader)
at Microsoft.Extensions.DependencyModel.DependencyContextLoader.Load(Assembly assembly)
at RazorLight.UseEntryAssemblyMetadataResolver.GetMetadataReferences()
at System.Threading.LazyInitializer.EnsureInitializedCore[T](T& target, Boolean& initialized, Object& syncLock, Func`1 valueFactory)
at RazorLight.Compilation.RoslynCompilerService.get_CompilationReferences()
at RazorLight.Compilation.RoslynCompilerService.Compile(CompilationContext context)
at RazorLight.EngineCore.CompileSource(ITemplateSource templateSource, ModelTypeInfo modelTypeInfo)
This looks like a resource leak caused by RazorLight.
I noticed that none of the RazorLight classes implement the IDisposable interface. What do I need to do to make sure RazorLight releases its (unmanaged) resources properly? Or is it a bug in RazorLight?
Using @Html.Raw("<span>test</span>")
returns a TemplateCompilationException.
With internal error message "The name 'Html' does not exist in the current context".
I assume you need to setup the HtmlHelper() for it to work?
Any other way i can pass inn a Html string from a model?
Another minor thing, when I pulled your code I had troubles to restore and build it initially because I have a much newer .NET SDK installed than the one used for the project.
I had to add
{
"projects": [ ".", "src", "sandbox" ],
"sdk": {
"version": "1.0.0-preview2-1-003177"
}
}
to the global.json which basically hints to the dotnet CLI which version to use to guarantee a successful build. Only then my dotnet knew to load an older SDK and I was able to restore and build the project. Maybe if you have time you can add this, will make it easier when other people fork your project or even when you have multiple SDKs installed but not upgraded all your projects to the latest every time.
I can get the line number of the error in TemplateParsingException
.
How can I get the line number in a TemplateCompilationException
or Exception
?
I have a base model:
public class EmailBaseDto
{
public string Subject { get; set; }
public string Title { get; set; }
}
and a layout view __LayoutEmail.cshtml where I want to use base model class:
@model EmailBaseDto
Then I have a derived model:
public class EmailForgotPasswordDto : EmailBaseDto
{
public string CallbackUrl { get; set; }
}
and ForgotPassword.cshtml view which uses derived class:
@model EmailForgotPasswordDto
In the runtime @Model.CallbackUrl
is as expected but @Model.Subject
in layout view crashes because Model is null! For rendering I use this method: engine.Parse(viewName + ".cshtml", model);
What could be a problem here?
I am trying to do this:
#include "@{Model.ClassName}.h"
to produce
#include "classname.h"
but I get string does not contain a definition for h!
How do I escape out of parsing before the .
Hello,
do master layouts with partials work?
If yes, would you please create samples how-to?
Hi,
We're getting the TemplateCompilationException on net462.
I noticed that CompilationReferences in RoslynCompilerService doesn't contain the reference to Microsoft.CSharp.dll on net462 (the library isn't in list of dlls returned by System.AppDomain.CurrentDomain.GetAssemblies event if package explicitly referenced for all target frameworks).
I've referenced the package and explicitly added the dll in MetadataResolver and its worked, but there should be a better way to do this :)
metadataReferences.Add(MetadataReference.CreateFromFile(System.IO.Path.Combine(System.AppDomain.CurrentDomain.BaseDirectory, "Microsoft.CSharp.dll")));
Thank you
Hi!
I'm trying to use @Inject to inject via .netCore DI system some services in my View.
But "@Inject" it's not a known tag in RazorLight.
Can you implement this in some future version? Do you want some help to do this?
To now I use a workaround.
Rather than
@inject IServiceUri ServiceUri
I used
@{var ServiceUri = new ServiceUri();}
But... I lost DI :'(
Hi, I saw that RazorLight targets NETStandard 1.6 and this is due to some dependencies that it has. When you upgrade the .NET dependencies from 1.0 to 1.1 then you could lower the NETStandard to 1.5, because unfortunately Microsoft.AspNetCore.Razor.Runtime doesn't target anything lower, otherwise you could have gone as low as 1.3 which would have been ideal.
This issue is caused by #39.
That is a real world scenario, when a template source is loaded from database, and running "ParseString" causes performance issues on more-or-less loaded systems, as templates are not cached
Implement integration with ASP.NET MVC Core, so it would become possible to use built-in Dependency Injection and inject services into RazorLight templates via @Inject directory
It seems that RazorLight.MVC 1.0.1 is not compatible with .NetFramework 4.6.2. I'm getting 'Package RazorLight.MVC 1.0.1 is not compatible with net462 (.NETFramework,Version=v4.6.2).'
RazorLight.RazorLightException: Can't locate a page as PageLookup is not set
It looks like trouble is from PageRenderer
private TemplatePage GetLayoutPage(string layoutKey)
where you create from page factory, but doesn't set PageLookup property of created object
The IRazorViewEngine
has "get" and "find" methods for parsing views from cshtml files.
This library has an incredibly useful "parse from string" function.
I've looked into the code and can't figure out how it does it. I assume that in order to leverage what's in the framework, it writes the string to a temporary file, then loads it as usual. Unless it's a custom engine?
Since this is a specialised feature that is not available in the framework, please consider documenting it so we can make informed decisions about whether to use it, or rely on cshtml files instead?
For example, how is a string converted to a view? Is it a customised engine, or is it written to file first? If so, does it read the file every time? Is it cached, etc.? High level stuff only.
Thanks for this very useful library.
(Doesn't need to be part of the docs, even some quick notes in this issue would help.)
Hi again. I'm trying to replace RazorEngine with RazorLight in my FormFactory project, but am getting some errors when I run my templates.
My templates are very similar to MVC views (in fact they are MVC views when I run them inside MVC, but I read them and change them when running as standalone templates), e.g. one might look like this:
@using System.ComponentModel.DataAnnotations
@using System.Linq
@using System.Xml.Linq
@using FormFactory
@{
@Model.GetCustomAttribute<DisplayAttribute>().Name
var value = Model.Value as XElement;
if (value != null) {
@Html.Raw(value.ToString())
}
}
So I have using
statements, and am using @model
and Model
and also Html
.
I got this to work with RazorEngine by making the template inherit from a base type with Html
and Model
on it. How can I set the base type with RazorEngine? It looks like Model
is set from the .Parse(..., model)
but that won't work for Html
-Also I'm getting errors like - The type or namespace name 'DataAnnotations' does not exist in the namespace 'System.ComponentModel' (are you missing an assembly reference?)
. Is there a way to tell RazorEngine what assemblies to use?- caused by DataAnnotations having a different namespace in 451/standard
thanks!
@Inject works only with templates, but not with their layouts. Add support for layouts
Hello there,
I'd like to inform you, that project is NOT abandoned. At first, I wanted to collect the issues and then roll a stable version, but since RC-1 is released - not so many issues were reported.
So here is a roadmap for the nearest future:
RC-2
1.1
1.2
Thank you all for supporting and contributing, you are awesome
Hi,
Inside a template I have an expression like "@((Model.ExpirationDate - System.DateTime.UtcNow).Days)".
Let's say that ExpirationDate = DateTime.UtcNow.AddDays(10);
In my unit test I have:
var expected = (ExpirationDate - DateTime.UtcNow).Days.ToString();
var actual = renderer.Render("@((Model.ExpirationDate - System.DateTime.UtcNow).Days)", new {ExpirationDate});
Assert.Equal(expected, actual);
And it throws as actual in this case is 10, but expected is 9. This test works fine when I use DateTime.Now.
Add support for Razor precompiled views
Exception text:
RazorLight.RazorLightException: 'Can't load metadata reference from the entry assembly. Make sure preserveCompilationContext is set to true in buildOptions section of project.json or in *.csproj file'
Here is the solution with isolated case:
https://1drv.ms/u/s!AuXjDEud3Cas10ihf9jpraKC316w
I'm trying out RazorLight in a F#/Suave.IO project I'm tinkering with, and so far it seems like a good fit because it's generally easy to use. But one thing that has made things a bit more opaque is that compilation errors caused by the views themselves are not surfaced in the exception thrown by the host. Could you expose these?
I'm using RazorLight in my web application where the user can provide mail templates in Razor syntax.
However this means that the user can do stuff like this
@{
var i = 0;
while (true)
{
i += 1;
<p>Line @i</p>
}
}
which causes my web application to crash at some point - or stuff like this
@using System.IO
@{ var f = File.ReadAllText(@"/etc/passwd"); }
@f
which is also really bad.
What can I do to prevent such attacks? Is it possible to run the Razor engine in a sandbox?
What happened to the engine.ParseString() method? I am trying to convert dynamic strings into html and do not have physical view files.
You have this example
string content = "Hello @Model.Name. Welcome to @Model.Title repository";
var model = new
{
Name = "John Doe",
Title = "RazorLight"
};
string result = engine.ParseString(content, model); //Output: Hello John Doe, Welcome to RazorLight repository
Where do I get the engine object from, because there is no constructor CreateString() or sth.
Hi,
This library looks really cool. I wanted to ask if there was a specific reason why you used .GetAwaiter().GetResult() instead of the async/await pattern?
I thought this could cause potential deadlocks or at least it is not leveraging the potential performance gain from running IO bound tasks asynchronously.
Was there a reason for it or would you be open to the idea of changing it to async/await?
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