--- /dev/null
+" Author: Eddie Lebow https://github.com/elebow
+" Description: rails_best_practices, a code metric tool for rails projects
+
+call ale#Set('ruby_rails_best_practices_options', '')
+call ale#Set('ruby_rails_best_practices_executable', 'rails_best_practices')
+
+function! ale_linters#ruby#rails_best_practices#Handle(buffer, lines) abort
+ let l:output = []
+
+ for l:warning in ale#util#FuzzyJSONDecode(a:lines, [])
+ if !ale#path#IsBufferPath(a:buffer, l:warning.filename)
+ continue
+ endif
+
+ call add(l:output, {
+ \ 'lnum': l:warning.line_number + 0,
+ \ 'type': 'W',
+ \ 'text': l:warning.message,
+ \})
+ endfor
+
+ return l:output
+endfunction
+
+function! ale_linters#ruby#rails_best_practices#GetCommand(buffer) abort
+ let l:rails_root = ale#ruby#FindRailsRoot(a:buffer)
+
+ if l:rails_root is? ''
+ return ''
+ endif
+
+ let l:executable = ale#Var(a:buffer, 'ruby_rails_best_practices_executable')
+ let l:output_file = has('win32') ? '%t ' : '/dev/stdout '
+ let l:cat_file = has('win32') ? '; type %t' : ''
+
+ return ale#ruby#EscapeExecutable(l:executable, 'rails_best_practices')
+ \ . ' --silent -f json --output-file ' . l:output_file
+ \ . ale#Var(a:buffer, 'ruby_rails_best_practices_options')
+ \ . ale#Escape(l:rails_root)
+ \ . l:cat_file
+endfunction
+
+call ale#linter#Define('ruby', {
+\ 'name': 'rails_best_practices',
+\ 'executable': {b -> ale#Var(b, 'ruby_rails_best_practices_executable')},
+\ 'command': function('ale_linters#ruby#rails_best_practices#GetCommand'),
+\ 'callback': 'ale_linters#ruby#rails_best_practices#Handle',
+\ 'lint_file': 1,
+\})