added User#answer, moved some code from inbox.rb to answer.rb

app/models/answer.rb

@@ -4,6 +4,12 @@ class Answer < ActiveRecord::Base
   has_many :comments, dependent: :destroy
   has_many :smiles, dependent: :destroy
 
+  after_create do
+    Notification.notify self.question.user, self unless self.question.author_is_anonymous
+    self.user.increment! :answered_count
+    self.question.increment! :answer_count
+  end
+
   before_destroy do
     # mark a report as deleted if it exists
     rep = Report.where(target_id: self.id).first

app/models/inbox.rb

@@ -2,13 +2,8 @@ class Inbox < ActiveRecord::Base
   belongs_to :user
   belongs_to :question
 
-  def answer(answer, user)
-    answer = Answer.create!(content: answer,
-                            user: user,
-                            question: self.question)
-    Notification.notify self.question.user, answer unless self.question.author_is_anonymous
-    user.increment! :answered_count
-    self.question.increment! :answer_count
+  def answer(answer_content, user)
+    answer = user.answer(self.question, answer_content)
     self.destroy
     answer
   end

app/models/user.rb

@@ -92,6 +92,15 @@ class User < ActiveRecord::Base
     friends.include? target_user
   end
 
+  # answers a question
+  # @param question [Question] the question to answer
+  # @param content [String] the answer content
+  def answer(question, content)
+    Answer.create!(content: content,
+                   user: self,
+                   question: question)
+  end
+
   # smiles an answer
   # @param answer [Answer] the answer to smile
   def smile(answer)
@@ -125,6 +134,7 @@ class User < ActiveRecord::Base
     self.moderator? || self.admin?
   end
 
+  # region stuff used for reporting/moderation
   def report(object)
     Report.create(type: "Reports::#{object.class}", target_id: object.id, user_id: self.id)
   end
@@ -156,6 +166,7 @@ class User < ActiveRecord::Base
   def report_comment(report, content)
     ModerationComment.create!(user: self, report: report, content: content)
   end
+  # endregion
 
   def cropping?
     !crop_x.blank? && !crop_y.blank? && !crop_w.blank? && !crop_h.blank?