Allow linting subset of files with bin/lint and fix deprecation errors (

#4852)

CONTRIBUTING.md

@@ -221,7 +221,7 @@ Before submitting a pull request, run all tests and lints. Fix any broken tests
 - Once your first PR has been merged, all commits pushed to an open PR will also run these workflows.
 
 #### Local testing
-- Run all lints with `bin/lint`.
+- Run all lints with `bin/lint`. (You can lint a single file/folder with `bin/lint {path_to_folder_or_file}`.)
 - Run all tests with `bundle exec rspec`
 - You can run a single test with `bundle exec rspec {path_to_test_name}_spec.rb` or on a specific line by appending `:LineNumber`
 - If you need to skip a failing test, place `pending("Reason you are skipping the test")` into the `it` block rather than skipping with `xit`. This will allow rspec to deliver the error message without causing the test suite to fail.

bin/lint

@@ -1,4 +1,16 @@
 #!/bin/bash
 
-bundle exec rubocop -A
-bundle exec erblint --lint-all -a
+# Note: Any arguments passed in will be passed along to rubocop or erb_lint
+#
+# Example to only lint Rails models:
+# $ bin/lint app/models
+#
+echo "Running rubocop"
+bundle exec rubocop -A $@
+
+echo "Running erb_lint"
+if [ $# -eq 0 ]; then # If no arguments are supplied check all files
+  bundle exec erb_lint --lint-all -a
+else # otherwise pass those arguments along (likely a specific file or folder)
+  bundle exec erb_lint $@ -a
+fi