ActiveAdmin批处理操作动态表单 [英] ActiveAdmin Batch Action Dynamic Form

问题描述

我将Rails 4与ActiveAdmin一起使用。我使用自定义表单创建了一个批处理操作，以为每个选定的设备创建一个带有内部版本号的任务。这是我的代码：

  ActiveAdmin.register Device do 
 
 def get_builds 
 builds = [] 
 Build.all.each做| build | 
构建<< [
 [＃{build.resource}-＃{build.version}]＃{build.file_name}，
 build.id 
] 
结束
 
 return builds 
 end 
 
 batch_action：create_task，形式：{
 build：get_builds（）
}做| id，输入| 
 
 build = Build.find（inputs [：build]）
 
 Device.where（id：ids）.each | device | 
 Task.create（{
 device：device，
 build：build 
}）
 end 
 
 redirect_to admin_tasks_path 
 end 
 
结束
  

我的问题是内置列表 $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $

这当然是因为form参数仅对我的函数进行一次评估，但找不到任何有关动态表单的文档。

解决方案

ActiveAdmin在加载时将类缓存在内存中，因此生成的版本仅计算一次。要在每次加载时重新计算，请将 lambda 传递为 form 的值，例如：

  form_lambda = lambda做
构建= Build.all.map做| build | 
 [＃{build.resource}-＃{build.version}＃{build.file_name}，build.id] 
 end 
 
 {build：builds} 
 end 
 
 batch_action：create_task，形式：form_lambda do 
＃... 
 end 
  

I am using rails 4 with ActiveAdmin. I created a batch action using a custom form to create a Task with a Build number for every selected Device. Here's what my code looks like:

ActiveAdmin.register Device do

  def get_builds
    builds = []
    Build.all.each do |build|
      builds << [
        "[#{build.resource} - #{build.version}] #{build.file_name}",
        build.id
      ]
    end

    return builds
  end

  batch_action :create_task, form: {
    build: get_builds()
  } do |ids, inputs|

    build = Build.find(inputs[:build])

    Device.where(id: ids).each do |device|
      Task.create({
        device: device,
        build: build
      })
    end

    redirect_to admin_tasks_path
  end

end

My problem is that the list of build in the batch action's form is not refreshing. When I start my app it does have a list of all the available builds but if I add or remove a build, the build list won't be refreshed.

It is of course because the form parameter evaluate my function only once but I can't find any documentation about having a "dynamic" form.

解决方案

ActiveAdmin is caching the class in memory on load, so the builds only get calculated once. To re-calculate on each load, pass a lambda as the value of form, e.g:

form_lambda = lambda do
  builds = Build.all.map do |build|
    ["#{ build.resource } - #{ build.version } #{ build.file_name }", build.id]
  end

  { build: builds }
end

batch_action :create_task, form: form_lambda do
  # ...
end

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