ProcessWire - Redirect site files to production server for local development.

.htaccess

# -----------------------------------------------------------------------------------------------
# Redirects all file requests that do not exist locally to the production server
# -----------------------------------------------------------------------------------------------

# Force local files that exist to be generated.
RewriteCond %{REQUEST_URI} ^/site/assets/files/[^\/]*/((.*))$
RewriteCond %{DOCUMENT_ROOT}/site/assets/files/%1/%2 -f
RewriteRule ^(.*)$ $1 [QSA,L]

# Otherwise, send anything else that's in the files directory to the production server.
RewriteCond %{REQUEST_URI} ^/site/assets/files/[^\/]*/.*$
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ http://www.breakthrough.org/$1 [QSA,L]