Add GridWeaponsController

app/controllers/api/v1/grid_weapons_controller.rb

@@ -0,0 +1,28 @@
+class Api::V1::GridWeaponsController < ActionController::API
+    def create
+        party = Party.find(weapon_params[:party_id])
+        canonical_weapon = Weapon.find(weapon_params[:weapon_id])
+
+        if grid_weapon = GridWeapon.where(
+            party_id: party.id, 
+            position: weapon_params[:position]
+        ).first
+            ap "Grid weapon found!"
+            ap grid_weapon
+            GridWeapon.destroy(grid_weapon.id)
+        end
+
+        @weapon = GridWeapon.create!(weapon_params.merge(party_id: party.id, weapon_id: canonical_weapon.id))
+        render :show, status: :created if @weapon.save!
+    end
+
+    def destroy
+    end
+
+    private
+
+    # Specify whitelisted properties that can be modified.
+    def weapon_params
+        params.require(:weapon).permit(:party_id, :weapon_id, :position, :mainhand)
+    end
+end