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使用 Factory Girl 作默假数据生成器

 3 years ago
source link: https://mednoter.com/replace-fixture-by-factory-girl.html
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使用 Factory Girl 作默假数据生成器

使用 factory_girl_rails 可以把 factory girl 集成到 rails 中，实现一些很方便的功能。

  1. factory girl 作默认的假数据生成器，替代 fixture.
  2. 自动加载多个目录下的所有的 factries，比如 test/factories，spec/factories.
  3. 自定义配置 namespace.

本周在配置新项目的时候，发现了一个很奇葩的 bug。我已经在 test group 中添加了 factory_girl_rails，但是用脚手架创建新的 model 时 rails g scaffold article title:string content:text，rails 依然生成了 fixture，Why？

# Gemfile
group :development do
  gem 'mongoid_colored_logger'
  gem 'awesome_print'
end

group :test do
  gem 'turn'
  gem 'factory_girl_rails'
  gem 'database_cleaner'
  gem 'mocha', require: false
end

replace fixture

后来在读官方文档中，才发现这么一句话。

If you use factory_girl for fixture replacement, ensure that factory_girl_rails is available in the development group. If it’s not, Rails will generate standard .yml files instead of factory files.

如果要使用 factory_girl 替代 fixture， development 环境也必须加载它。调整一下 gem 的分组就把这个问题解决了。

# Gemfile
group :development do
  gem 'mongoid_colored_logger'
  gem 'awesome_print'
end

group :test do
  gem 'turn'
  gem 'database_cleaner'
  gem 'mocha', require: false
end

group :development, :test do
  # development 和 test 环境都加载它
  gem 'factory_girl_rails'
end

说实话，这个篇文章没啥技术含量，主要是担心不少同学会踩到这个坑，所以写下来，希望有所帮助。

吕小荣
05 November 2014

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