Rails: problem locating asset following fly-deploy

Questions / Help Build debugging
1

Hi! I’m just trying to deploy a test Rails app and now get this error after what I thought was a successful fly-deploy:

“We’re sorry, but something went wrong.”

In the log file, I read that

ActionView::Template::Error (The asset "sparky-in-the-sink" is not present in the asset pipeline.

This is after I installed ‘sparky-in-the-sink.jpg’ into the Rails folder ‘app/assets/images’.

If I refer to the image with

<%= image_tag("sparky-in-the-sink", {:style => "width:300px;"}) %>

Everthing works ok when I start Rails in development on my localhost.

I guess this falls under the Rails 7 asset pipeline category which seems a complex topic.

I did find “Making Sense of Rails Assets · Fly” but I’m not sure this helped me make sense of my particular image problem.

Anyone have an idea on how to fix, or least learn more?

Thank you!

1 Like
2

Sounds like rails assets:precompile wasn’t run. Are you using a Dockerfile? Can you run Getting Started · Fly Docs to the point of the first deploy?

3

Oh yes in fact I’m pretty sure that’s exactly the tutorial I’ve been following. After adding turbo streams, I did rails db:migrate, and fly-deploy. I then tried adding the image I described above. Then I got the errors.

I do have a Dockerfile in the root of my project as per the tutorial.

4

Did you solve the issue? I’m having the exact same problem

5

Hi! Try to add this to your dockerfile before precompiling assets

RUN yarn build
RUN yarn build:css
# Precompiling assets for production without requiring secret RAILS_MASTER_KEY
RUN SECRET_KEY_BASE=DUMMY ./bin/rails assets:precompile
6

Ok yes @matiasleandronunez I do not have good access to that project now, but if I remember correctly my root problem was failure to use the Rails image_tag correctly… maybe inclusion of (or failure to include) the file extension, something dumb like that.

7

Thanks for the answers @tomb & @Alexey, however that didn’t seem to solve the issue in my case.

I have the default Dockerfile from the sample project that has the line
RUN SECRET_KEY_BASE=DUMMY ./bin/rails assets:precompile
but upon fly deploy I don’t see anything but the 404.html, 502.html etc in /public/assets when I ssh

8

Did you try to add this as I mentioned?

RUN yarn build
RUN yarn build:css
9

Does the following work locally?

bin/rails server -e production
10

@Alexey Yes, image fails to build.

@rubys It does, but displays the same behaviour.