如何在Azure功能中添加razor视图文件？

Question

我正在创建一个应用程序，它是 azure 函数项目，我想在该项目中使用 Razor 视图，是否有我应该在 azure 函数中使用的模板引擎？

Answer 1

由于RazorLight 项目和 Azure Functions 的一些进步，现在可以选择渲染 Razor。

警告在此示例中，视图是在运行时编译的。如果您的 Azure Functions 经常停止和启动，请考虑这一点。

using System;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Azure.WebJobs;
using Microsoft.Azure.WebJobs.Extensions.Http;
using Microsoft.AspNetCore.Http;
using Microsoft.Extensions.Logging;
using System.Reflection;
using RazorLight;
using System.Linq;

namespace RootNamespace
{
    public static class Function1
    {
        [FunctionName("Function1")]
        public static async Task<IActionResult> Run(
            [HttpTrigger(AuthorizationLevel.Function, "get", "post", Route = null)] HttpRequest req,
            ILogger log)
        {
            var executingAssembly = Assembly.GetExecutingAssembly();
            //check which view files have been embedded
            var names = executingAssembly.GetManifestResourceNames();
            names.ToList().ForEach(x => Console.WriteLine(x));

            var engine = new RazorLightEngineBuilder()
              .UseEmbeddedResourcesProject(executingAssembly, "RootNamespace.Views") //'Views' is folder with views 
              .SetOperatingAssembly(executingAssembly)
              .UseMemoryCachingProvider()
              .Build();

            string result = await engine.CompileRenderAsync<object>("View1.cshtml", "foobar model string");

            return new OkObjectResult(result);
        }
    }
}

.\Views\View1.cshtml

@model String;
@{
    Layout = "_Layout.cshtml";
}
View1 @Model

.\Views\_Layout.cshtml

Layout
@RenderBody()

.csproj

<Project Sdk="Microsoft.NET.Sdk">
  <PropertyGroup>
    <TargetFramework>netcoreapp3.1</TargetFramework>
    <AzureFunctionsVersion>v3</AzureFunctionsVersion>
    <_FunctionsSkipCleanOutput>true</_FunctionsSkipCleanOutput>  <-- these 3 properties are important
    <PreserveCompilationReferences>true</PreserveCompilationReferences>
    <PreserveCompilationContext>true</PreserveCompilationContext>
  </PropertyGroup>
  <ItemGroup>
    <None Remove="Views\View1.cshtml" />
    <None Remove="Views\_Layout.cshtml" />
  </ItemGroup>
  <ItemGroup>
    <EmbeddedResource Include="Views\View1.cshtml">  <-- in my example views are Embedded Resources
      <CopyToOutputDirectory>Always</CopyToOutputDirectory>
    </EmbeddedResource>
    <EmbeddedResource Include="Views\_Layout.cshtml">
      <CopyToOutputDirectory>Always</CopyToOutputDirectory>
    </EmbeddedResource>
  </ItemGroup>
  <ItemGroup>
    <PackageReference Include="Microsoft.NET.Sdk.Functions" Version="3.0.11" />
    <PackageReference Include="RazorLight" Version="2.0.0-rc.3" />
  </ItemGroup>
  <ItemGroup>
    <None Update="host.json">
      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
    </None>
    <None Update="local.settings.json">
      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
      <CopyToPublishDirectory>Never</CopyToPublishDirectory>
    </None>
  </ItemGroup>
</Project>

Answer 2

Azure Functions 不为 Razor 或其他模板引擎提供任何内置或特殊支持，因此您使用它的事实不应影响您对使用哪个引擎的决定。

Razor 和其他模板引擎确实支持编程渲染，因此你应该能够使用该方法让模板在 Azure Functions 中工作。