Grid model object updates

* Adds has_one association to canonical objects
* GridWeapon is_mainhand refactored
* GridCharacter add_awakening refactored

app/models/grid_character.rb

@@ -1,6 +1,8 @@
 # frozen_string_literal: true
 
 class GridCharacter < ApplicationRecord
+  has_one :object, class_name: 'Character', foreign_key: :id, primary_key: :character_id
+
   belongs_to :awakening, optional: true
   belongs_to :party,
              counter_cache: :characters_count,
@@ -87,9 +89,9 @@ class GridCharacter < ApplicationRecord
   private
 
   def add_awakening
-    if self.awakening.nil?
-      self.awakening = Awakening.where(slug: "character-balanced").sole
-    end
+    return unless awakening.nil?
+
+    self.awakening = Awakening.where(slug: 'character-balanced').sole
   end
 
   def check_value(property, type)

app/models/grid_summon.rb

@@ -5,6 +5,7 @@ class GridSummon < ApplicationRecord
              counter_cache: :summons_count,
              inverse_of: :summons
   validates_presence_of :party
+  has_one :object, class_name: 'Summon', foreign_key: :id, primary_key: :summon_id
 
   validate :compatible_with_position, on: :create
   validate :no_conflicts, on: :create
@@ -23,6 +24,7 @@ class GridSummon < ApplicationRecord
 
     party.summons.find do |grid_summon|
       return unless grid_summon.id
+
       grid_summon if summon.id == grid_summon.summon.id
     end
   end

app/models/grid_weapon.rb

@@ -6,6 +6,8 @@ class GridWeapon < ApplicationRecord
              inverse_of: :weapons
   validates_presence_of :party
 
+  has_one :object, class_name: 'Weapon', foreign_key: :id, primary_key: :weapon_id
+
   belongs_to :weapon_key1, class_name: 'WeaponKey', foreign_key: :weapon_key1_id, optional: true
   belongs_to :weapon_key2, class_name: 'WeaponKey', foreign_key: :weapon_key2_id, optional: true
   belongs_to :weapon_key3, class_name: 'WeaponKey', foreign_key: :weapon_key3_id, optional: true
@@ -78,10 +80,6 @@ class GridWeapon < ApplicationRecord
 
   # Checks if the weapon should be a mainhand before saving the model
   def is_mainhand
-    if self.position == -1
-      self.mainhand = true
-    else
-      self.mainhand = false
-    end
+    self.mainhand = position == -1
   end
 end