如何在 netlify.toml 配置中插入环境变量

Question

我想根据环境代理到不同的 api - 我已经尝试了以下主题的一些变体，但没有任何运气。如果可能的话，正确的做法是什么？

[build.environment]
  API_URI="https://dev-api.foo.com/:splat"

[context.production.environment]
  API_URI="https://prod-api.foo.com/:splat"

[[redirects]]
  from = "/api/*"
  to = "$API_URI"
  status = 200
  force = true

这行不通。

虽然上面的配置在我将 URI 硬编码到 to 字段时有效，但当我尝试插入环境变量时它就失败了。

Answer 1

回答我自己的问题 - 它不受支持，您必须自己手动插入环境变量作为 Netlify 构建的一部分。

Answer 2

是的。这是可能的。这是详细的文档：https://www.netlify.com/docs/continuous-deployment/#deploy-contexts

在我的例子中，我需要为生产和所有其他分支设置一个 REACT_APP_API_URL 分开。这是我使用的：

[context.production.environment]
  REACT_APP_API_URL = "https://api.test.im"

[context.deploy-preview.environment]
  REACT_APP_API_URL = "https://api-staging.test.im"

[context.branch-deploy.environment]
  REACT_APP_API_URL = "https://api-staging.test.im"

Answer 3

它不受支持，但 Netlify 在其文档中建议了一种解决方法 (https://www.netlify.com/docs/netlify-toml-reference)：

Using Environment Variables directly as values ($VARIABLENAME) in your netlify.toml file is not supported. However, the following workflow can be used to substitute values based on environment variables in the file, assuming you are only trying to change headers or redirects. The rest of the file is read BEFORE your build - but those sections are read AFTER the build process.

Add a placeholder like API_KEY_PLACEHOLDER somewhere in the netlify.toml redirects or headers sections.

Create an Build Environment Variable, for example API_KEY, with the desired value. You can do this in the toml file or in our UI in the Build and Deploy Settings section of your configuration. You might use the latter to keep sensitive values out of your repository.

Add a command like this one to your build command: sed -i s/API_KEY_PLACEHOLDER/$API_KEY/g netlify.toml && normal build command.

如何在 netlify.toml 配置中插入环境变量

How to interpolate environment variables within netlify.toml config

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