Fix NoMethodError bug when params[:_rucaptha] is nil.

CHANGELOG.md

@@ -1,3 +1,8 @@
+0.4.2
+-----
+
+- Fix NoMethodError bug when params[:_rucaptha] is nil.
+
 0.4.1
 -----
 

Gemfile.lock

@@ -1,7 +1,7 @@
 PATH
   remote: .
   specs:
-    rucaptcha (0.4.1)
+    rucaptcha (0.4.2)
       posix-spawn (>= 0.3.0)
 
 GEM

lib/rucaptcha/controller_helpers.rb

@@ -15,7 +15,7 @@ module RuCaptcha
 
     def verify_rucaptcha?(resource = nil)
       rucaptcha_at = session[:_rucaptcha_at].to_i
-      captcha = params[:_rucaptcha].downcase.strip
+      captcha = (params[:_rucaptcha] || '').downcase.strip
 
       # Captcha chars in Session expire in 2 minutes
       valid = false

lib/rucaptcha/version.rb

@@ -1,3 +1,3 @@
 module RuCaptcha
-  VERSION = '0.4.1'
+  VERSION = '0.4.2'
 end

spec/controller_helpers_spec.rb

@@ -22,6 +22,19 @@ describe RuCaptcha do
   end
 
   describe '.verify_rucaptcha?' do
+    context 'Nil of param' do
+      it 'should work when params[:_rucaptcha] is nil' do
+        simple.params[:_rucaptcha] = nil
+        expect(simple.verify_rucaptcha?).to eq(false)
+      end
+
+      it 'should work when session[:_rucaptcha] is nil' do
+        simple.session[:_rucaptcha] = nil
+        simple.params[:_rucaptcha] = 'Abcd'
+        expect(simple.verify_rucaptcha?).to eq(false)
+      end
+    end
+
     context 'Correct chars in params' do
       it 'should work' do
         simple.session[:_rucaptcha_at] = Time.now.to_i