[英]Overriding const_missing returns `NameError uninitialized constant` in non-dev environments
I have the following code in my rails app我的 Rails 应用程序中有以下代码
# app/models/test_module/text_class.rb
module TestModule
class TestClass
end
end
# app/models/test_module.rb
module TestModule
def self.const_missing(name)
super(delete_end_number(name.to_s).to_sym)
end
def self.delete_end_number(str)
str.gsub(/\d+$/,'')
end
end
When it runs in development it works当它在开发中运行时,它可以工作
>> TestModule::TestClass1
=> TestModule::TestClass
When I run it in production however I get当我在生产中运行它时,我得到了
NameError (uninitialized constant TestModule::TestClass)
If I just copy TestModule::TestClass
into the console it works.如果我只是将TestModule::TestClass
复制到控制台中,它就可以工作。 It seems just to not work with the const_missing
method.似乎只是不适用于const_missing
方法。
I suspect it may have something to do with the autoloading as when I set config.cache_classes
and config.eager_load
to true in development.rb it happens there too.我怀疑它可能与自动加载有关,因为当我在 development.rb 中将config.cache_classes
和config.eager_load
设置为 true 时,它也发生在那里。 I can't seem to figure out how to get it to work in cached environments though.我似乎无法弄清楚如何让它在缓存环境中工作。
Change from从改变
super(delete_end_number(name.to_s).to_sym)
To至
const = delete_end_number(name.to_s).to_sym
ActiveSupport::Dependencies.load_missing_constant(self, const)
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