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

问题描述

为什么这个yaml文件无法解析？

  --- 
 <％sensor_types = YAML。 load_file（'db / seed-fixtures / sensor_type.yml'）％> 
<％sensor_types.each做| sensor_type | ％> 
 sensor<％= sensor_type [’id’]％> ;： 
 id：<％= sensor_type [’id’]％> 
标题：<％= sensor_type [’title’]％> 
单位：<％= sensor_type [’unit’]％> 
 valid_min：<％= sensor_type [’valid_min’]％> 
 valid_max：<％= sensor_type [’valid_max’]％> 
代号：<％= sensor_type [’代号’]％> 
 scale_base_ten_exponent：<％= sensor_type ['scale_base_ten_exponent']％> 
<％end％> 
  

此文件用于我的测试中的夹具，由rspec从夹具目录中加载。 / p>

当我尝试时得到：在这种情况下，第4行第28列（Psych :: SyntaxError）不允许映射值

解决方案

您无法像基本YAML文件一样加载包含ERB的YAML文件。查看此帖子。

相反，您可以做的是（在规范初始化程序或before钩子中）：

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

然后在测试中使用此变量。

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 %>

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

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

解决方案

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

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)

And then use this variable in your test.

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