Clean style in the EquipmentController

app/controllers/equipment_controller.rb

@@ -1,16 +1,17 @@
+# Controller for the Equipment model
 class EquipmentController < ApplicationController
-  before_action :create_anonymous_account_if_not_logged_in, only: [:edit, :create, :update]
-  before_action :require_ownership_of_equipment, only: [:update, :edit, :destroy]
+  before_action :create_anonymous_account_if_not_logged_in,
+                only: [:edit, :create, :update]
+
+  before_action :require_ownership_of_equipment,
+                only: [:update, :edit, :destroy]
+
   before_action :hide_private_equipment, only: [:show]
 
   def index
-    @equipment = Equipment.where(user_id: session[:user])
-
-    if @equipment.size == 0
-      @equipment = []
-    end
-
-    @equipment = @equipment.sort { |a, b| a.name.downcase <=> b.name.downcase }
+    @equipment = Equipment
+                 .where(user_id: session[:user])
+                 .order(:name).presence || []
 
     respond_to do |format|
       format.html # index.html.erb
@@ -41,39 +42,35 @@ class EquipmentController < ApplicationController
   end
 
   def create
-    @equipment = Equipment.create(equipment_params)
-    @equipment.user_id = session[:user]
-    @equipment.universe = Universe.where(user_id: session[:user]).where(name: params[:equipment][:universe].strip).first
+    @equipment = create_equipment_from_params
 
+    # rubocop:disable LineLength
     respond_to do |format|
       if @equipment.save
-        format.html { redirect_to @equipment, notice: 'Equipment was successfully created.' }
+        format.html { redirect_to @equipment, notice: t(:equipment_create_success) }
         format.json { render json: @equipment, status: :created, location: @equipment }
       else
         format.html { render action: 'new' }
         format.json { render json: @equipment.errors, status: :unprocessable_entity }
       end
     end
+    # rubocop:enable LineLength
   end
 
   def update
-    @equipment = Equipment.find(params[:id])
-
-    if params[:equipment][:universe].empty?
-      params[:equipment][:universe] = nil
-    else
-      params[:equipment][:universe] = Universe.where(user_id: session[:user]).where(name: params[:equipment][:universe].strip).first
-    end
+    @equipment = update_equipment_from_params
 
+    # rubocop:disable LineLength
     respond_to do |format|
       if @equipment.update_attributes(equipment_params)
-        format.html { redirect_to @equipment, notice: 'Equipment was successfully updated.' }
+        format.html { redirect_to @equipment, notice: t(:equipment_update_success) }
         format.json { head :no_content }
       else
         format.html { render action: 'edit' }
         format.json { render json: @equipment.errors, status: :unprocessable_entity }
       end
     end
+    # rubocop:enable LineLength
   end
 
   def destroy
@@ -97,4 +94,36 @@ class EquipmentController < ApplicationController
       :magic,
       :notes, :private_notes)
   end
+
+  def populate_universe_fields
+    @universe = Universe.where(user_id: session[:user],
+                               name: params[:universe].strip).first
+    @equipment =
+      @equipment.where(universe_id: @universe.id) if @equipment.blank?
+  end
+
+  def universe_from_equipment_params
+    Equipment.where(user_id: session[:user],
+                    name: params[:equipment][:universe].strip).first.presence
+  end
+
+  def create_equipment_from_params
+    equipment = Equipment.create(equipment_params)
+    equipment.user_id = session[:user]
+    equipment.universe = universe_from_equipment_params
+    equipment
+  end
+
+  def update_equipment_from_params
+    params[:equipment][:universe] = universe_from_equipment_params
+    Equipment.find(params[:id])
+  end
+
+  def render_json_error_unprocessable
+    render json: @equipment.errors, status: :unprocessable_entity
+  end
+
+  def render_html_success(notice)
+    redirect_to @equipment, notice: notice
+  end
 end

app/models/equipment.rb

@@ -1,6 +1,18 @@
 class Equipment < ActiveRecord::Base
+  include Comparable
+  
   validates_presence_of :name
 
   belongs_to :user
   belongs_to :universe
+  
+  before_save :nil_blank_universe
+  
+  def <=>(anOther)
+    name.downcase <=> anOther.name.downcase
+  end
+
+  def nil_blank_universe
+    self.universe = nil if universe.blank?
+  end
 end

config/locales/en.yml

@@ -16,3 +16,6 @@ en:
   
   character_create_success: "Character was successfully created."
   character_update_success: "Character was successfully updated."
+
+  equipment_create_success: "Equipment was successfully created."
+  equipment_update_success: "Equipment was successfully updated."