Set makeprg with projectile.vim

Author: tpope

autoload/rails.vim

@@ -1404,8 +1404,8 @@ function! s:readable_default_rake_task(...) dict abort
   endif
 endfunction
 
-function! s:app_rake_command() dict abort
-  if self.has_path('.zeus.sock') && executable('zeus')
+function! s:app_rake_command(...) dict abort
+  if get(a:, 1) !=# 'static' && self.has_path('.zeus.sock') && executable('zeus')
     return 'zeus rake'
   elseif self.has_path('bin/rake')
     return self.ruby_script_command('bin/rake')

plugin/rails.vim

@@ -74,7 +74,10 @@ augroup railsPluginDetect
         \ if RailsDetect() | call rails#buffer_syntax() | endif
 
   autocmd User ProjectileDetect
-        \ if RailsDetect() | call projectile#append(b:rails_root, {}) | endif
+        \ if RailsDetect() |
+        \   call projectile#append(b:rails_root,
+        \     {'*': {'make': split(rails#app().rake_command('static'))}}) |
+        \ endif
 augroup END
 
 command! -bar -bang -nargs=* -complete=dir Rails execute rails#new_app_command(<bang>0,<f-args>)