changed rules property to be stored as a JSON string

nodes/xilica-subscribe.html

@@ -6,7 +6,7 @@ RED.nodes.registerType('xilica-subscribe', {
     name: { value: "" },
     action: { value: "subscribe" },
     connection: { value: "", type: "xilica-connection" },
-    rules: { value: [] },
+    rules: { value: "[]" },
     transport: { value: "TCP" }
   },
   inputs: 1,
@@ -21,15 +21,10 @@ RED.nodes.registerType('xilica-subscribe', {
   },
   oneditprepare: function () {
     var node = this;
-    var rules = node.rules || [];
-    if (typeof rules === "string") {
-      try {
-        rules = JSON.parse(rules);
-      } catch (e) {
-        rules = [];
-      }
-    }
-    if (!Array.isArray(rules)) {
+    var rules;
+    try {
+      rules = node.rules ? JSON.parse(node.rules) : [];
+    } catch (e) {
       rules = [];
     }
 
@@ -121,7 +116,7 @@ RED.nodes.registerType('xilica-subscribe', {
       rules.push(rule);
     });
 
-    this.rules = rules;
+    this.rules = JSON.stringify(rules);
   }
 });
 </script>