ReporteController#opcionales is missing a template for this request format and variant. request.formats: [“application/pdf”] request.variant: []

Question

"\\nrequest.variant: #{request.variant.inspect}"

    raise ActionController::UnknownFormat, message
  elsif interactive_browser_request?
    message = "#{self.class.name}\##{action_name} is missing a template " \
      "for this request format and variant.\n\n" \

My controller

respond_to do |format|
  format.html
  format.pdf do
    pdf = Prawn::Document.new
    params[:id] = @ids
    @opcionales = Opcionale.where("id= ?", @ids)
    ...
    send_data pdf.render, filename: "Reporte_#{@opcionales}.pdf",
                        type: "application/pdf",
                        disposition: "inline"

  end
end

My routes

get 'reporte/opcionales'

get 'reporte/opcionales/:id', to: "reporte#opcionales", :defaults => { :format => 'pdf' }

In my views

{<%= link_to "Generar PDF", '/reporte/opcionales/'+(opcionales.id.to_s)+'.pdf' %>}

Answer 1

转到config/intializers/mime_types.rb并添加Mime::Type.register "application/pdf", :pdf然后安装gem响应器