带有 erb 的 YAML 未解析 [英] YAML with erb is not parsing

问题描述

为什么这个 yaml 文件不会解析?

Why this yaml file won't parse?

---
<% sensor_types = YAML.load_file('db/seed-fixtures/sensor_type.yml') %>
<% sensor_types.each do |sensor_type| %>
sensor<%= sensor_type['id'] %>:
  id: <%= sensor_type['id'] %>
  title: <%= sensor_type['title'] %>
  unit: "<%= sensor_type['unit'] %>"
  valid_min: <%= sensor_type['valid_min'] %>
  valid_max: <%= sensor_type['valid_max'] %>
  codename: <%= sensor_type['codename'] %>
  scale_base_ten_exponent: <%= sensor_type['scale_base_ten_exponent'] %>
<% end %>

这个文件用于我的测试中的fixtures，它是由rspec从fixtures目录加载的.

this file is used for fixtures in my tests, it is loaded by rspec from the fixtures directory.

当我尝试它时，我得到:在第 4 行第 28 列 (Psych::SyntaxError) 的上下文中不允许映射值"

when I try it I get: "mapping values are not allowed in this context at line 4 column 28 (Psych::SyntaxError)"

推荐答案

您不能像基本 YAML 文件那样加载包含 ERB 的 YAML 文件.查看此帖子.

You can't load a YAML file containing ERB like a basic YAML file. Checkout this post.

您可以做的是(在规范初始化程序或前挂钩中):

What you can do instead is (in a spec initializer or a before hook):

FIXTURE_CONFIG = YAML.load(ERB.new(File.read("#{Rails.root}/path_to_your_file.yml.erb")).result)

然后在你的测试中使用这个变量.

And then use this variable in your test.

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