Ruby-on-rails Active Admin：仅自定义新表单

Active Admin: Customize only new form

提问by Michael Irwin

I'm using Active Admin to provide an admin to some models. I need to provide a customized new form for one of them, but leave the edit form as the default provided by Active Admin. Here's what I have. It works in that it is giving me the new form I want, but the edit form is also using the new form, which is not what I want:

我正在使用 Active Admin 为某些模型提供管理员。我需要为其中一个提供自定义的新表单，但将编辑表单保留为 Active Admin 提供的默认表单。这就是我所拥有的。它的工作原理是它给了我我想要的新表单，但编辑表单也在使用新表单，这不是我想要的：

ActiveAdmin.register Document do
  form :partial => 'form'
end

I've tried this, but it gives an error that 'new' is an undefined method:

我试过这个，但它给出了一个错误，即“新”是一个未定义的方法：

ActiveAdmin.register Document do
  new do
    form :partial => 'form'
  end
end

采纳答案by Michael Irwin

I've figured out a way to do it with some logic in the view. Not the best way, to be sure, but it does what I want until I figure out a better way. Here's the logic I'm using:

我已经想出了一种方法来在视图中使用一些逻辑来做到这一点。当然，这不是最好的方法，但在我找到更好的方法之前，它会做我想做的事。这是我正在使用的逻辑：

<% if controller.action_name == 'new' %>
new form
<% else %>
edit form
<% end -%>

回答by ryanb006

If you just want to hide or show certain fields on the new form (e.g. a field that you generate automatically in the model using before_create), you can do this:

如果您只想隐藏或显示新表单上的某些字段（例如，您使用 before_create 在模型中自动生成的字段），您可以这样做：

form do |f|
    f.inputs "Member Details" do
        f.input :first_name
        f.input :last_name
        f.input :email
        if !f.object.new_record?
            f.input :password
            f.input :password_confirmation
        end
    end
    f.button :Submit
end

This will hide the password fields when you create a new member in the event that you automatically generate passwords the first time the member is created.

如果您在第一次创建成员时自动生成密码，这将在您创建新成员时隐藏密码字段。

回答by Serabe

I am not sure it can be done directly with form. If you take a look at the codeyou'll see that only the last call is taken into account. On the other hand, you may try something like:

我不确定它可以直接用form. 如果您查看代码，您会发现只考虑了最后一次调用。另一方面，您可以尝试以下操作：

config.set_page_config :new do
  form :partial => 'form'
end

But I would rather ask the developers for this feature.

但我更愿意向开发人员询问此功能。

回答by across

If someone wants to render different partials for new and edit pages you have to:

如果有人想为新页面和编辑页面呈现不同的部分，您必须：

#app/admin/document.rb
ActiveAdmin.register Document do
  form partial: 'form'
end

#app/views/admin/documents/_form.html.erb
<% if @document.new_record? %>
  <%= render partial: "form_new", resource: @document %>
<% else %>
  <%= render partial: "form_edit", resource: @document %>
<% end %>

#app/views/admin/documents/_form_new.html.erb
<%= semantic_form_for [:admin, @document], builder: Formtastic::FormBuilder do |f| %>
  <%= f.semantic_errors %>
  <%= f.inputs do %>
    <%= f.input :name %>
  <% end %>
  <%= f.actions %>
<% end %>

回答by mattfitzgerald

You could create a custom page that acts as the new form, render a partial there which contains arbitrary form code.

您可以创建一个用作新表单的自定义页面，在那里呈现包含任意表单代码的部分。

So, in your admin directory you make a file new_document.rbcontaining

因此，在您的 admin 目录中，您创建了一个new_document.rb包含

  ActiveAdmin.register_page "New Document" do

    content do
      panel "Create a new document" do
        render :partial => "admin/documents/custom_form", :locals => {document: Document.new}
      end 
    end

  end

You then put your arbitrary formtastic form in admin/documents/custom_formand your arbitrary controller action aka collection_actionin admin/documents.

然后你把你的任意formtastic形式admin/documents/custom_form和任意波形控制器动作又名collection_action中admin/documents。

So basically doing normal rails type stuff within the activeadmin framework.

所以基本上在 activeadmin 框架内做正常的 rails 类型的东西。