shop monitor selection

swshop/shopConfig.lua

@@ -1,8 +1,8 @@
-local UI         = require('ui')
+local UI     = require('ui')
 
-local colors     = _G.colors
-local os         = _G.os
-local peripheral = _G.peripheral
+local colors = _G.colors
+local device = _G.device
+local os     = _G.os
 
 --[[ Configuration Page ]]--
 local wizardPage = UI.WizardPage {
@@ -64,8 +64,8 @@ function wizardPage:saveNode(node)
 end
 
 function wizardPage:isValidType(node)
-  local m = peripheral.getType(node.name)
-  return m == 'monitor' and {
+  local m = device[node.name]
+  return m and m.type == 'monitor' and {
     name = 'Store Front',
     value = 'shop',
     category = 'display',