Use keyword arguments

CHANGELOG.md

@@ -1,3 +1,7 @@
+## 0.2.0 [unreleased]
+
+- Use keyword arguments
+
 ## 0.1.4
 
 - Added `distinct` option to replace `uniq`

lib/hightop.rb

@@ -2,27 +2,23 @@
 require "active_record"
 
 module Hightop
-  def top(column, limit = nil, options = {})
-    if limit.is_a?(Hash)
-      options = limit
-      limit = nil
-    end
-
-    distinct = options[:distinct] || options[:uniq]
+  def top(column, limit = nil, distinct: nil, uniq: nil, min: nil, nil: nil)
+    distinct ||= uniq
     order_str = column.is_a?(Array) ? column.map(&:to_s).join(", ") : column
     relation = group(column).order("count_#{distinct || 'all'} DESC, #{order_str}")
     if limit
       relation = relation.limit(limit)
     end
 
-    unless options[:nil]
+    # terribly named option
+    unless binding.local_variable_get(:nil)
       (column.is_a?(Array) ? column : [column]).each do |c|
         relation = relation.where("#{c} IS NOT NULL")
       end
     end
 
-    if options[:min]
-      relation = relation.having("COUNT(#{distinct ? "DISTINCT #{distinct}" : '*'}) >= #{options[:min].to_i}")
+    if min
+      relation = relation.having("COUNT(#{distinct ? "DISTINCT #{distinct}" : '*'}) >= #{min.to_i}")
     end
 
     if distinct

test/hightop_test.rb

@@ -101,6 +101,12 @@ def test_min_distinct
     assert_equal expected, Visit.top(:city, min: 2, distinct: :user_id)
   end
 
+  def test_bad_argument
+    assert_raises(ArgumentError) do
+      Visit.top(:city, boom: true)
+    end
+  end
+
   def create_city(city, count = 1)
     create({city: city}, count)
   end