Ruby on Rails活动管理映像占位符

Question

I am using activeadmin as the admin interface for an application I am working on and am trying to work out how to get image URL's to display as placeholders if an image is already uploaded.

Activeadmin works using simpleform so in theory it should be relatively easy but I seem to be struggling.

The code I currently have is:

ActiveAdmin.register Place do
...
show do |place|
    attributes_table do
    ...
    (1..6).each do |i|
        row(:"image_#{i}") do
          if place.send("image_#{i}").present?
            image_tag(place.send("image_#{i}").index)
          else
            "None"
          end
        end
      end
      (1..6).each do |i|
        row(:"mood_board_image_#{i}") do
          if place.send("mood_board_image_#{i}").present?
            image_tag(place.("mood_board_image_#{i}").index)
          else
            "None"
          end
        end
      end
    end
  end
....
end

At the moment I am just getting the default 'No file chosen' text when in the activeadmin interface. Any help would be very much appreciated :)

Answer 1

The first arg in image_tag should be the source of the image: http://apidock.com/rails/ActionView/Helpers/AssetTagHelper/image_tag

if 'there is image url'
  image_tag(url_of_the_image)
else
  #your_button_whit_your_text
end