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<% model = (param.respond_to? :object) ? param.object : param %>

<% uploader_name = model.class.try(:uploaders).try(:keys).try(:first).try(:to_sym) # suppose the model has only one uploader uploader = model.send(uploader_name) url = ((uploader._storage.to_s == "CarrierWave::Storage::File") ? request.base_url.to_s : "") + uploader.url.to_s %>

<div class="field"> <%= label_tag uploader_name.to_s.capitalize + ":"%><br> <% if uploader.file %> <%= image_tag url %><br> <div>Image file name: <%= uploader.file.filename %></div><br><br> <% end %> </div>

<% if param.respond_to? :object %>

<% form = param %>

<div class="field"> <%= form.file_field uploader_name %> </div><br>

<div class="field"> <label> <%= form.check_box "remove_#{uploader_name}" %> Remove file </label> </div><br><br>

<% end %>

<%# console %>

<!-- USAGE EXAMPLE:

How to call this partial:

class User < ApplicationRecord mount_uploader :avatar, AvatarUploader end

Show action: <%#= render 'layouts/uploaded_file', param: @user %>

Edit action: <%#= render 'layouts/uploaded_file', param: form %> -->