Carrierwave default image doesn't display

问题

I'm trying to have a default image display in my Rails 3.2 application. I've followed the instructions on the Carrierwave github page and have looked through several Stackoverflow posts. But, for some reason it's still not working.

Here is my code:

In my photo_uploader.rb file I've enabled this:

def default_url
  "/images/" + [version_name, "default.png"].compact.join('_')
end

In my form and show views I'm accessing the image like this:

<%= image_tag @user.photo.url %>

The path to my image is:

/app/assets/images/default.png

In my application.rb I've added the following line because that's supposed to allow static assets be served up:

config.serve_static_assets = true

However, my server is showing the following when the page is loaded:

ActionController::RoutingError (No route matches [GET] "/images/default.png")

I've also tried re-compiling my assets.

Any ideas on what I'm doing wrong?

回答1:

This is an asset pipeline issue.

Try getting /assets/default.png (drop the images/)

More information here: http://guides.rubyonrails.org/asset_pipeline.html

回答2:

Another approach:

ActionController::Base.helpers.asset_path("default.png")

回答3:

Just simply return "default.png" in default_url method.

def default_url
  "default.png"
end

来源：https://stackoverflow.com/questions/16800511/carrierwave-default-image-doesnt-display