2 files changed, 19 insertions, 0 deletions
diff --git a/app/models/character.rb b/app/models/character.rb
index d386002..03bd510 100644
--- a/app/models/character.rb
+++ b/app/models/character.rb
@@ -9,6 +9,7 @@ class Character < ApplicationRecord
   has_many :character_items
   has_many :learned_activities
   has_many :items, through: :character_items
+  has_many :item_infixes
   has_many :character_skills
   has_many :conditions, through: :states
   has_many :states
@@ -182,6 +183,11 @@ class Character < ApplicationRecord
     end
   end
 
+  def max_infixes(skill)
+    skill = Skill.find_by_gid(skill) if skill.is_a? String
+    1 + (skill_level(skill) / 20).floor
+  end
+
   def add_skill_xp(skill, amount)
     skill = Skill.find_by_gid(skill) if skill.is_a? String
     Character.transaction do
diff --git a/app/models/item_infix.rb b/app/models/item_infix.rb
new file mode 100644
index 0000000..cc99ee7
--- /dev/null
+++ b/app/models/item_infix.rb
@@ -0,0 +1,13 @@
+class ItemInfix < ApplicationRecord
+  belongs_to :character
+  belongs_to :item
+  belongs_to :skill
+
+  before_create :check_max_infixes
+
+  private
+    def check_max_infixes
+      current_infixes = character.item_infixes.where(skill: skill)
+      raise :abort if current_infixes.count >= character.max_infixes(skill)
+    end
+end