unable to upload images using paperclip gem - ruby

Question

In my rails app I have a customer form of two steps.In step one customer enters his details and logo and pdf and in the next step he selects a theme which he like.
my customers_controller
def new
if current_user.admin?
#customer = Customer.new
#customer.additional_fields.build
else
redirect_to root_path, notice: 'You dont have admin permissions'
end
end
def edit
if current_user.admin?
#customer = Customer.find(params[:id])
else
redirect_to root_path, notice: 'You dont have admin permissions'
end
end
def theme_selector
#customer_id = params[:customer_id]
puts #customer_id
end
def create
Rails.logger.debug "PARAMS:"
params.each do |k,v|
Rails.logger.debug "#{k}: #{v}"
end
if current_user.admin?
#customer = Customer.new(customer_params)
respond_to do |format|
if #customer.save
format.html do
redirect_to #customer, notice: 'Customer was successfully created.'
end
format.json { render :show, status: :created, location: #customer }
else
format.html { render :new }
format.json do
render json: #customer.errors, status: :unprocessable_entity
end
end
end
else
redirect_to root_path, notice: 'You dont have admin permissions'
end
end
_form.html.erb
<%= form_for #customer, url: theme_selector_path,:method => :post,html: { multipart: true } do |f| %>
<input type="hidden" name="customer_id" value="<%= #customer.id %>">
<% if #customer.errors.any? %>
<div id="error_explanation">
<h2>
<%= "#{pluralize(#customer.errors.count, "error")} prohibited this customer from being saved:" %>
</h2>
<ul>
<% #customer.errors.full_messages.each do |msg| %>
<li>
<%= msg %>
</li>
<% end %>
</ul>
</div>
<% end %>
<div class="form-group">
<%= f.label :name %>
<%= f.text_field :name, class:"form-control" %>
</div>
<div class="form-group">
<%= f.label :address %>
<%= f.text_field :address, class:"form-control" %>
</div>
<div class="form-group">
<%= f.label :affiliate_id %>
<%= f.text_field :affiliate_id, class:"form-control" %>
</div>
<div class="control-group">
<%= f.label :logo, :class => 'control-label' %>
<div class="controls">
<%= f.file_field :logo,accept: 'image/png,image/gif,image/jpeg, image/jpg' %>
</div>
</div>
<div class="form-group">
<label>Upload File</label>
<%= f.file_field :file,accept: 'application/pdf' %>
</div>
<div class="form-group">
<% f.fields_for :additional_fields do | ing | %>
<%= ing.text_field :key, :size => 50 %>
<%= ing.text_field :value, :size => 50 %>
<% end %>
</div>
<div class="actions">
<div class="row">
<div class="col-md-5">
<span><%= f.submit 'Save', class: "btn-addmore" %></span>
<span><!--%= link_to 'Back', customers_path, class: "btn btn-danger" %--> </span>
</div>
<div class="col-md-2 col-md-offset-4">
<%= link_to "next", theme_selector_path, class: "btn-update" %>
</div>
</div>
</div>
<% end %>
I have a submit button at theme_selector.html.erb to create the customer.But I was getting an error "Paperclip::AdapterRegistry::NoHandlerError (No handler found for "#")" in customers controller create action.
development log:
Processing by CustomersController#create as HTML
Parameters: {"customer"=>{"name"=>"test", "address"=>"test", "affiliate_id"=>"test", "category"=>"", "domain"=>"test#web.com", "phone"=>"1111111111", "contact"=>"1214521", "email"=>"test#malibu.com", "comments"=>"none", "logo"=>"# <ActionDispatch::Http::UploadedFile:0x007f3f4946c258>", "file"=>"#<ActionDispatch::Http::UploadedFile:0x007f3f4946c208>"}}
PARAMS:
customer: #<ActionController::Parameters:0x007f3f442c0058>
controller: customers
action: create
Completed 500 Internal Server Error in 10ms (ActiveRecord: 1.0ms)
Paperclip::AdapterRegistry::NoHandlerError (No handler found for "# <ActionDispatch::Http::UploadedFile:0x007f3f4946c258>"):
app/controllers/customers_controller.rb:47:in `create'
Thanks in Advance!
The step-1 of customer form contains customer details and step-2 contains theme selection.However I was able to upload and save the data in step-1 but I was getting the error while saving the data from step-1 and step-2 together at the theme_selector page .
customer.rb
class Customer < ApplicationRecord
has_attached_file :logo
validates_attachment_content_type :logo, :content_type => /\Aimage\/.*\Z/
has_attached_file :file
validates_attachment_content_type :file, :content_type => "application/pdf"
end