diff --git a/assets/javascripts/discourse/models/query.js b/assets/javascripts/discourse/models/query.js
index d167ba2..0d95084 100644
--- a/assets/javascripts/discourse/models/query.js
+++ b/assets/javascripts/discourse/models/query.js
@@ -1,27 +1,36 @@
-import discourseComputed, {
-  observes,
-  on,
-} from "discourse-common/utils/decorators";
 import getURL from "discourse-common/lib/get-url";
 import RestModel from "discourse/models/rest";
-import { reads } from "@ember/object/computed";
 
-const Query = RestModel.extend({
-  params: {},
-  results: null,
-  hasParams: reads("param_info.length"),
+export default class Query extends RestModel {
+  static updatePropertyNames = [
+    "name",
+    "description",
+    "sql",
+    "user_id",
+    "created_at",
+    "group_ids",
+    "last_run_at",
+  ];
 
-  @on("init")
-  @observes("param_info")
-  _initParams() {
-    this.resetParams();
-  },
+  params = {};
+
+  constructor() {
+    super(...arguments);
+    this.param_info?.resetParams();
+  }
+
+  get downloadUrl() {
+    return getURL(`/admin/plugins/explorer/queries/${this.id}.json?export=1`);
+  }
+
+  get hasParams() {
+    return this.param_info.length;
+  }
 
   resetParams() {
     const newParams = {};
     const oldParams = this.params;
-    const paramInfo = this.param_info || [];
-    paramInfo.forEach((pinfo) => {
+    this.param_info.forEach((pinfo) => {
       const name = pinfo.identifier;
       if (oldParams[pinfo.identifier]) {
         newParams[name] = oldParams[name];
@@ -37,22 +46,8 @@ const Query = RestModel.extend({
         newParams[name] = "";
       }
     });
-    this.set("params", newParams);
-  },
-
-  @discourseComputed("id")
-  downloadUrl(id) {
-    // TODO - can we change this to use the store/adapter?
-    return getURL(`/admin/plugins/explorer/queries/${id}.json?export=1`);
-  },
-
-  createProperties() {
-    if (this.sql) {
-      // Importing
-      return this.updateProperties();
-    }
-    return this.getProperties("name");
-  },
+    this.params = newParams;
+  }
 
   updateProperties() {
     const props = this.getProperties(Query.updatePropertyNames);
@@ -60,19 +55,5 @@ const Query = RestModel.extend({
       props.id = this.id;
     }
     return props;
-  },
-});
-
-Query.reopenClass({
-  updatePropertyNames: [
-    "name",
-    "description",
-    "sql",
-    "user_id",
-    "created_at",
-    "group_ids",
-    "last_run_at",
-  ],
-});
-
-export default Query;
+  }
+}
diff --git a/assets/javascripts/discourse/templates/admin/plugins-explorer.hbs b/assets/javascripts/discourse/templates/admin/plugins-explorer.hbs
index af7681a..9822b6b 100644
--- a/assets/javascripts/discourse/templates/admin/plugins-explorer.hbs
+++ b/assets/javascripts/discourse/templates/admin/plugins-explorer.hbs
@@ -275,10 +275,10 @@
 
     {{#unless this.selectedItem.fake}}
       <QueryResultsWrapper
-        @results={{results}}
-        @showResults={{showResults}}
-        @query={{selectedItem}}
-        @content={{results}}
+        @results={{this.results}}
+        @showResults={{this.showResults}}
+        @query={{this.selectedItem}}
+        @content={{this.results}}
       />
     {{/unless}}