Fix Retrospring/bugs#49

app/controllers/ajax/answer_controller.rb

@@ -1,4 +1,11 @@
 class Ajax::AnswerController < ApplicationController
+  rescue_from(ActionController::ParameterMissing) do |titanic_param|
+    @status = :parameter_error
+    @message = "#{titanic_param.param.capitalize} is required"
+    @success = false
+    render partial: "ajax/shared/status"
+  end
+
   def create
     params.require :id
     params.require :answer
@@ -27,6 +34,14 @@ class Ajax::AnswerController < ApplicationController
       end
     end
 
+    # this should never trigger because empty params throw ParameterMissing
+    unless params[:answer].length > 0
+      @status = :peter_dinklage
+      @message = "Answer is too short"
+      @success = false
+      return
+    end
+
     answer = nil
 
     begin

app/controllers/ajax/comment_controller.rb

@@ -1,4 +1,11 @@
 class Ajax::CommentController < ApplicationController
+  rescue_from(ActionController::ParameterMissing) do |param_miss_ex|
+    @status = :parameter_error
+    @message = "#{param_miss_ex.param.capitalize} is required"
+    @success = false
+    render partial: "ajax/shared/status"
+  end
+
   def create
     params.require :answer
     params.require :comment

app/controllers/ajax/friend_controller.rb

@@ -1,4 +1,11 @@
 class Ajax::FriendController < ApplicationController
+  rescue_from(ActionController::ParameterMissing) do |param_miss_ex|
+    @status = :parameter_error
+    @message = "#{param_miss_ex.param.capitalize} is required"
+    @success = false
+    render partial: "ajax/shared/status"
+  end
+  
   def create
     params.require :screen_name
 

app/controllers/ajax/group_controller.rb

@@ -1,4 +1,11 @@
 class Ajax::GroupController < ApplicationController
+  rescue_from(ActionController::ParameterMissing) do |param_miss_ex|
+    @status = :parameter_error
+    @message = "#{param_miss_ex.param.capitalize} is required"
+    @success = false
+    render partial: "ajax/shared/status"
+  end
+  
   def create
     @status = :err
     @success = false

app/controllers/ajax/inbox_controller.rb

@@ -1,4 +1,11 @@
 class Ajax::InboxController < ApplicationController
+  rescue_from(ActionController::ParameterMissing) do |param_miss_ex|
+    @status = :parameter_error
+    @message = "#{param_miss_ex.param.capitalize} is required"
+    @success = false
+    render partial: "ajax/shared/status"
+  end
+  
   def create
     unless user_signed_in?
       @status = :noauth

app/controllers/ajax/moderation_controller.rb

@@ -1,4 +1,10 @@
 class Ajax::ModerationController < ApplicationController
+  rescue_from(ActionController::ParameterMissing) do |param_miss_ex|
+    @status = :parameter_error
+    @message = "#{param_miss_ex.param.capitalize} is required"
+    @success = false
+    render partial: "ajax/shared/status"
+  end
   
   def vote
     params.require :id

app/controllers/ajax/question_controller.rb

@@ -1,6 +1,13 @@
 class Ajax::QuestionController < ApplicationController
   include MarkdownHelper
 
+  rescue_from(ActionController::ParameterMissing) do |param_miss_ex|
+    @status = :parameter_error
+    @message = "#{param_miss_ex.param.capitalize} is required"
+    @success = false
+    render partial: "ajax/shared/status"
+  end
+
   def destroy
     params.require :question
 

app/controllers/ajax/report_controller.rb

@@ -1,4 +1,11 @@
 class Ajax::ReportController < ApplicationController
+  rescue_from(ActionController::ParameterMissing) do |param_miss_ex|
+    @status = :parameter_error
+    @message = "#{param_miss_ex.param.capitalize} is required"
+    @success = false
+    render partial: "ajax/shared/status"
+  end
+  
   def create
     params.require :id
     params.require :type

app/controllers/ajax/smile_controller.rb

@@ -1,4 +1,11 @@
 class Ajax::SmileController < ApplicationController
+  rescue_from(ActionController::ParameterMissing) do |param_miss_ex|
+    @status = :parameter_error
+    @message = "#{param_miss_ex.param.capitalize} is required"
+    @success = false
+    render partial: "ajax/shared/status"
+  end
+  
   def create
     params.require :id
 

app/controllers/ajax/subscription_controller.rb

@@ -1,5 +1,11 @@
 class Ajax::SubscriptionController < ApplicationController
   before_filter :authenticate_user!
+  rescue_from(ActionController::ParameterMissing) do |param_miss_ex|
+    @status = :parameter_error
+    @message = "#{param_miss_ex.param.capitalize} is required"
+    @success = false
+    render partial: "ajax/shared/status"
+  end
 
   def subscribe
     params.require :answer