Rails4: Template is missing error with PDFKit

Question

I'd like to generate PDF file, so I am trying to use PDFKit but failing.

The following error was displayed when I click the link.

ActionView::MissingTemplate (Missing template /show with {:locale=>[:en], :formats=>[:pdf], :variants=>[], :handlers=>[:erb, :builder, :raw, :ruby, :coffee, :jbuilder]}. Searched in:
  * "/usr/local/rvm/gems/ruby-2.3.0/gems/web-console-2.0.0.beta3/lib/action_dispatch/templates"
  * "/home/ubuntu/workspace/app/views"
  * "/usr/local/rvm/gems/ruby-2.3.0/gems/web-console-2.0.0.beta3/app/views"

schedules\show.html.erb

<% provide(:title, @schedule.title) %>
<%= render @schedules %>

schedules\ _schedule.html.erb

...
    <%= link_to "PDF", schedule_path(schedule.id, format: "pdf"), class: "btn btn-sm btn-default" %>
...

schedules_controller.rb

...
respond_to do |format|
  format.html # show.html.erb
  format.pdf do
    html = render_to_string template: "show"

    pdf = PDFKit.new(html, encoding: "UTF-8")

    send_data pdf.to_pdf,
      filename:    "#{@scheudles.id}.pdf",
      type:        "application/pdf",
      disposition: "inline"
  end
end
...

Although I create show.pdf.erb and _schedule.pdf.erb which contents is the same as html.erb, the result is the same.

Answer 1

The reason you are getting Missing template /show is because from the controller using template: "show" isn't specific enough for rails to know where in your views folder to find the show file.

You can see the evidence of this in your error where it says it searched for show inside ../app/views. You need to use the template parent folder along with the template name.

change this

format.pdf do
  html = render_to_string template: "show"
  ...
end 

to this

format.pdf do
  html = render_to_string template: "schedules/show.html.erb"
  ...
end