link_to在本地工作，但在Heroku上不工作

Question

I have a portfolio application built with Ruby 2.3.0 and Rails 5.0.0 that has links to external urls that work locally but do not work when deployed to Heroku.

<%= link_to image_tag(project.index_image), project.url %>

There are two different types of links that are not working and producing different symptoms.

External Application Links
In production the links to my other applications successfully redirect to the desired urls but the url's do not update in the browser to the new page.

Github links
The links to github do not work and redirect to a blank screen. That screen displays the following error in the developer console:

Refused to display 'https://github.com/my_repo' in a frame because an ancestor violates the following Content Security Policy directive: "frame-ancestors 'none'".

Answer 1

Try to creating a helper class for custom URL like below

On the helpers/application_helper.rb

def custom_link(image, url)
    link_to image_tag(image), "#{url}"
end

And the view look like this

<%= custom_link project.index_image, project.url %>

This should work I hope because it's working my own.

Hope it helps

Answer 2

You can try the following:

<%= link_to project.url do %>
  image_tag(project.index_image)
<% end %>