Fix to use paramAttributes for initial value

app/assets/javascripts/vue/treeview.js

@@ -6,11 +6,10 @@
 
     new Vue({
       el: "#treeview",
-      paramAttributes: [],
+      paramAttributes: ["initialPath"],
       data: {
         preview: "",
         path: "",
-        initialPath: "/var/log",
         paths: []
       },
 

app/views/shared/vue/_treeview.html.erb

@@ -2,7 +2,7 @@
 <% action ||= "" %>
 <% submit_button ||= "" %>
 <%= form_tag(action, method: :post) do %>
-  <div id="treeview">
+  <div id="treeview" initialPath="/var/log">
     <input type="text" size="48" v-model="path" disabled />
     <input type="hidden" name="<%= name %>" v-model="path" />
     <div class="dirs">