Active Admin Errors

Question

I am using active admin for the first time, and I don't know much about it. I'm trying to create a table (in admin dashboard view) that shows certain details of the model object (which are created via form submission.)

I simply want to be able to view recent additions to the model object from the admin dashboard.

I've read the documentation on Active Admin, but it seems like most of it is using examples that don't entirely meet what I'm trying to do. (Or it could just be that I am a newbie at this)

I've looked at a few forums and found some examples, but even they use multiple variations on the table_for method.

I am getting this error:

NoMethodError in Admin::Dashboard#index Showing C:/Ruby24-x64/lib/ruby/gems/2.4.0/gems/activeadmin-1.4.3/app/views/active_admin/page/index.html.arb where line #2 raised:

undefined method `first_name' for # Did you mean? sti_name

Any insight or advice would be appreciated. I've posted my code from dashboard.rb below:

ActiveAdmin.register_page "Dashboard" do   content :title => proc{ I18n.t("active_admin.dashboard") } do columns do    column do
    panel "New Teacher Applicants" do
      table_for Volunteer do |t|
        t.column("Name") { |volunteer| volunteer.first_name }
        t.column("Surname") { |volunteer| volunteer.last_name }
        t.column("Email") { |volunteer| volunteer.email }
        t.column("Gender") { |volunteer| volunteer.gender }

      end

    end   end end

 end end

Active admin won't create tables, I will create model objects, not tables. You can register any existing models and use form_for to create a form for creating rows and updating it. — Ravi Prakash
– Ravi Prakash, Commented Dec 29, 2018 at 23:52
Sorry, my question wasn't clear- I'm trying to create a table in the admin dashboard of recent object additions to the model. Just trying to view recent additions to a model. I will edit my question. Thanks for helping me rethink my question. — dbate
– dbate, Commented Dec 30, 2018 at 0:57
I have had several different errors but the one I added to my post is the most common. Thanks! — dbate
– dbate, Commented Dec 30, 2018 at 18:29

Sjors Branderhorst · Accepted Answer · 2019-01-24 09:47:02Z

1

I think this is what you are looking for:

panel 'New Teacher Applicants' do
  table_for Volunteer.order("created_at desc").take(5) do
    column "Name", :first_name
    column "Surname", :last_name
    column "Email", :email
    column "Gender", :gender
  end
end

The argument to table_for should be a collection. Maybe take a closer look: https://activeadmin.info/12-arbre-components.html#table-for

answered Jan 24, 2019 at 9:47

Sjors Branderhorst

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