fix drop down other

app/models/champs/drop_down_list_champ.rb

@@ -56,7 +56,7 @@ class Champs::DropDownListChamp < Champ
   end
 
   def drop_down_other?
-    drop_down_other
+    drop_down_other == "1" || drop_down_other == true
   end
 
   def value=(value)

spec/models/champs/drop_down_list_champ_spec.rb

@@ -0,0 +1,24 @@
+describe Champs::DropDownListChamp do
+  describe '#drop_down_other?' do
+    let(:drop_down) { create(:champ_drop_down_list) }
+
+    context 'when drop_down_other is nil' do
+      it do
+        drop_down.type_de_champ.drop_down_other = nil
+        expect(drop_down.drop_down_other?).to be false
+
+        drop_down.type_de_champ.drop_down_other = "0"
+        expect(drop_down.drop_down_other?).to be false
+
+        drop_down.type_de_champ.drop_down_other = false
+        expect(drop_down.drop_down_other?).to be false
+
+        drop_down.type_de_champ.drop_down_other = "1"
+        expect(drop_down.drop_down_other?).to be true
+
+        drop_down.type_de_champ.drop_down_other = true
+        expect(drop_down.drop_down_other?).to be true
+      end
+    end
+  end
+end