My troubleshooting journey began when I encountered a persisting issue with an image not loading while working on my rails app locally. The specific file causing trouble was located in the directory:
apps/assets/stylesheets/main.scss
I aimed to display a background image within a header tag, initially approaching it like this:
header {
text-align: center;
background: linear-gradient(90deg, #d4eece, #d4eece, #d4eece),
url('../images/header.jpg') no-repeat;
background-blend-mode: multiply;
background-size: cover;
}
This setup led to errors both in the Rails server and Chrome DevTools console:
ActionController::RoutingError (No route matches [GET] "/images/header.jpg")
GET http://localhost:3000/images/header.jpg 404 (Not Found)
After several unsuccessful attempts tweaking the URL path, even shifting the image folder around, I finally got it to work by modifying the URL like this:
url('images/header.jpg')
Surprisingly, the image still didn't show until I added a height property to the header element, as shown below:
header {
text-align: center;
height: 390px;
background: linear-gradient(90deg, #d4eece, #d4eece, #d4eece),
url('images/header.jpg') no-repeat;
background-blend-mode: multiply;
background-size: cover;
}
The mystery of why certain URL variations didn't work remains unsolved. It could be related to how links are configured in application.html.erb or perhaps nuances between .scss and .css files. Regardless, I managed to resolve the CSS background image loading issue on localhost through persistence and trial-and-error.