[英]How to include Concern inside Initializer with nesting on Rails 5 app
In a nutshell, I'm attempting to pass form values corresponding to attributes on the version model (provided by paper_trail gem) to a controller that's invoking a custom method, which performs an optimized search. 简而言之,我试图将与版本模型(由paper_trail gem提供)上的属性相对应的表单值传递给调用自定义方法的控制器,该控制器执行优化的搜索。 But, I'm receiving a NoMethodError.
但是,我收到了NoMethodError。 The method works as intended when declared inside the initializer itself, but not elsewhere.
在初始化器内部声明该方法时,该方法按预期工作,但在其他地方不声明。 Any thoughts on how to fix?
关于如何解决的任何想法?
Code is below - I've omitted portions that didn't seem relevant: 代码在下面-我省略了看起来不相关的部分:
app/controllers/worker/csr_activities_controller.rb app / controllers / worker / csr_activities_controller.rb
class Worker::CustomerSupportActivitiesController < Worker::BaseController
def index
PaperTrail::Version.search_versions(resource_params)
end
...
private
def resource_params
params.fetch(:query).permit(:whodunnit, :event, :item_type, :term, :start_date, :end_date)
end
end
app/controllers/concerns/search_versions.rb app / controllers / concerns / search_versions.rb
module SearchVersions
extend ActiveSupport::Concern
def search_versions(params)
...
end
end
config/initializers/paper_trail.rb config / initializers / paper_trail.rb
PaperTrail.config.track_associations = false
PaperTrail.config.version_limit = 100
require Rails.root.join('./app/controllers/concerns/search_versions.rb')
module PaperTrail
class Version < ActiveRecord::Base
include SearchVersions
end
end
terminal 终奌站
...
[51e4ee33-6308-4861-bf3a-e1c51ecdfac0] NoMethodError (undefined method `search_versions' for #<Class:0x007f94e5ed2a70>):
...
Classic - figured it out shortly after posting here. 经典-在此处发布后不久就解决了。 The issue can be fixed by changing:
可以通过以下方法解决此问题:
include SearchVersions
to extend SearchVersions
inside config/initializers/paper_trail.rb
. include SearchVersions
以在config/initializers/paper_trail.rb
extend SearchVersions
config/initializers/paper_trail.rb
。
Essentially, I need to use extend since I'm invoking the method on the Class Version which has been extended by the Module SearchVersions. 从本质上讲,我需要使用扩展,因为我要在模块版本由模块SearchVersions扩展的类版本上调用该方法。
Edit: changed terminology based on engineersmnky's comment to prevent confusion. 编辑:根据engineersmnky的评论更改了术语,以防止混淆。
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