Relative Paths From Partials Referencing Other Partials

Asked 9/10, 2013 at 10:19 Answered 20/12, 2019 at 8:50

ruby-on-rails ruby-on-rails-3 erb relative-path partial

I am using a (primary) partial:

<%= render partial: 'shared/page/head' %>

Which makes use of other (secondary) partials:

<head>
  <%= render partial: 'shared/page/head/title' %>
  <%= render partial: 'shared/page/head/meta' %>
  ...
  <%= render partial: 'shared/page/head/fonts' %>
  ...
  <%= render partial: 'shared/page/head/google_analytics' %>
</head>

As you can see I'm currently using paths relative to app/view for these secondary partials even though they are sitting in the same directory as the primary partial.

I've tried using relative paths:

<%= render partial: 'title' %>

<%= render partial: './title' %>

But neither work.

Is there a way to have a partial resolve partials it uses using a relative path?

Dennard answered 9/10, 2013 at 10:19 Comment(2)

Please list the actual paths to your partials – Oliveolivegreen 16/3, 2014 at 18:12

If you think about your first partial inclusion, that inclusion doesn't 'reset' the working folder of the view being built. If the view being rendered is app/views/projects/show.erb, the "render partial: 'shared/page/head'" is just "go grab the contents of that file, then render it here" - you're still in the app/views/projects folder. – Improper 6/1, 2015 at 17:7

This might be one solution to your problem: http://apidock.com/rails/ActionController/Base/prepend_view_path

Bluebell answered 19/3, 2014 at 13:22 Comment(1)

github.com/rails/rails/issues/12973 here is some more explanation on how to use it. – Reducer 5/5, 2017 at 15:36

I wrote a helper method for this which works perfectly:

def render_relative_partial(relative_path, option={})
    caller_path = caller[0].split(".")[0].split("/")[0..-2].join("/")
  path = caller_path.gsub("#{Rails.root.to_s}/app/views/","") + "/#{relative_path}"

  option[:partial] = path
  render option
end

Pollinize answered 26/5, 2019 at 3:28 Comment(1)

Nice solution! Very frustrating its not built in. For me I made a little adjustment and changed the last two lines with render partial: path, locals: option – Loyola 18/10, 2019 at 0:49

As mentioned by another poster, prepend_view_path can be used to achieve this.

Here is how to implement it:

controllers/shared_page_controller.rb

class SharedPageController < ActionController::Base
  before_action :set_view_paths

  # ... 

  private

  def set_view_paths
    prepend_view_path 'app/views/shared/page/head'
  end
end

views/shared/page/head.html.erb

<head>
  <%# This will try to find the partial `views/shared/page/head/title.html.erb` %>
  <%= render partial: 'title' %>
  <%= render partial: 'meta' %>
  <%# ... %>
  <%= render partial: 'fonts' %>
  <%# ... %>
  <%= render partial: 'google_analytics' %>
</head>

Now Rails will not only look for partials in app/views, but also app/views/shared/page/head.

Saltatorial answered 20/12, 2019 at 8:50 Comment(1)

If you're here in 2023, this one worked for me. However I had to use an '/' at the beginning of the partial name in the view. Instead of render partial: 'title' I had to use render partial: '/title' – Whitening 5/11, 2023 at 14:21

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