indicates the thought patterns of someone with an ActiveRecord backgr…

examples/rogue_associations.rb

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+# This attempts to illustrate the redis way of...
+#   - has_one 1:1 (Rogue - equipment)
+#   - has_many through (Rogue - inventory) 1:1 many:many 1:1
+#   - has_one 1:many (equipment - item)
+#   - Mixin usage to promote DRY code
+
+require "ohm"
+
+# We use this method as a sort of 'mixin' for the Rogue and Monster classes
+def battleable
+  attribute :name;       index :name
+  attribute :hp,         lambda { |x| x.to_i } # cast hp to integer
+  attribute :mp,         lambda { |x| x.to_i }
+  list      :inventory,  :Item
+
+  reference :equipment,  :Loadout
+end
+
+
+class Rogue < Ohm::Model
+  battleable # give Rogues all the attributes required to conduct battle
+
+  # instead of using Rogue.create, favor Rogue.spawn
+  def self.spawn(name: nil)
+    rogue = self.create(name: name)
+    rogue.equipment = Loadout.create
+    rogue.save
+    rogue
+  end
+end
+
+class Monster < Ohm::Model
+  battleable # give monsters attributes required to conduct battle
+end
+
+class Loadout < Ohm::Model
+  reference :head,       :Item
+  reference :right_hand, :Item
+  reference :left_hand,  :Item
+  reference :body,       :Item
+  reference :legs,       :Item
+  reference :feet,       :Item
+  reference :wrist,      :Item
+  reference :neck,       :Item
+end
+
+class Item < Ohm::Model
+  attribute :name
+  attribute :dmg,    lambda { |x| x.to_i }
+  attribute :def,    lambda { |x| x.to_i }
+  attribute :value,  lambda { |x| x.to_i }
+
+  def sell_to(target)
+    original_owner = "hmmm...."
+  end
+end
+
+
+
+
+# Now let's require the test framework we're going to use called
+# [cutest](http://github.com/djanowski/cutest)
+require "cutest"
+
+
+# And make sure that every run of our test suite has a clean Redis instance.
+prepare { Ohm.flush }
+
+test "a rogue can be equipped with leggins" do
+  rogue = Rogue.spawn
+
+  rogue.equipment.legs = Item.create(name: "Starting Leggings", def: "1")
+
+  # TODO: Should I do something to make saving a parent also save children?
+  rogue.save
+  rogue.equipment.save
+
+  rogue = Rogue[rogue.id] # lookup the rogue from the DB to make sure things are persistent
+  assert_equal rogue.equipment.legs.def, 1
+end
+
+test "a rogue can sell her gear" do
+  rogue = Rogue.spawn
+
+  # TODO: test for ability to sell gear
+end