FIX: prevent creation of query with an empty name

assets/javascripts/discourse/controllers/admin-plugins-explorer.js.es6

@@ -21,20 +21,19 @@ export default Ember.Controller.extend({
   editing: false,
   everEditing: false,
 
+  createDisabled: function() {
+    return (this.get('newQueryName') || "").trim().length === 0;
+  }.property('newQueryName'),
+
   selectedItem: function() {
-    const _id = this.get('selectedQueryId');
-    const id = parseInt(_id);
-    const item = this.get('content').find(function(q) {
-      return q.get('id') === id;
-    });
+    const id = parseInt(this.get('selectedQueryId'));
+    const item = this.get('content').find(q => q.get('id') === id);
     return item || NoQuery;
   }.property('selectedQueryId'),
 
   othersDirty: function() {
     const selected = this.get('selectedItem');
-    return !!this.get('content').find(function(q) {
-      return q !== selected && q.get('dirty');
-    });
+    return !!this.get('content').find(q => q !== selected && q.get('dirty'));
   }.property('selectedItem', 'selectedItem.dirty'),
 
   setEverEditing: function() {
@@ -104,15 +103,15 @@ export default Ember.Controller.extend({
     },
 
     create() {
-      const self = this;
+      const name = this.get("newQueryName").trim();
       this.set('loading', true);
       this.set('showCreate', false);
-      var newQuery = this.store.createRecord('query', {name: this.get('newQueryName')});
-      newQuery.save().then(function(result) {
-        self.addCreatedRecord(result.target);
-      }).catch(popupAjaxError).finally(function() {
-        self.set('loading', false);
-      });
+      this.store
+        .createRecord('query', { name })
+        .save()
+        .then(result => this.addCreatedRecord(result.target) )
+        .catch(popupAjaxError)
+        .finally(() => this.set('loading', false));
     },
 
     discard() {

assets/javascripts/discourse/templates/admin/plugins-explorer.hbs

@@ -12,7 +12,7 @@
     {{#if showCreate}}
       <div class="query-create">
         {{text-field value=newQueryName placeholderKey="explorer.create_placeholder"}}
-        {{d-button action="create" label="explorer.create" icon="plus" class="btn-primary"}}
+        {{d-button action="create" disabled=createDisabled label="explorer.create" icon="plus" class="btn-primary"}}
       </div>
     {{/if}}
 

plugin.rb

@@ -583,9 +583,7 @@ SQL
     end
 
     def slug
-      s = Slug.for(name)
-      s = "query-#{id}" unless s.present?
-      s
+      Slug.for(name).presence || "query-#{id}"
     end
 
     def params
@@ -619,11 +617,9 @@ SQL
     def self.from_hash(h)
       query = DataExplorer::Query.new
       [:name, :description, :sql].each do |sym|
-        query.send("#{sym}=", h[sym]) if h[sym]
-      end
-      if h[:id]
-        query.id = h[:id].to_i
+        query.send("#{sym}=", h[sym].strip) if h[sym]
       end
+      query.id = h[:id].to_i if h[:id]
       query
     end
 
@@ -637,8 +633,7 @@ SQL
     end
 
     def self.find(id, opts = {})
-      hash = DataExplorer.pstore_get("q:#{id}")
-      unless hash
+      unless hash = DataExplorer.pstore_get("q:#{id}")
         return DataExplorer::Query.new if opts[:ignore_deleted]
         raise Discourse::NotFound
       end
@@ -647,9 +642,7 @@ SQL
 
     def save
       check_params!
-      unless @id && @id > 0
-        @id = self.class.alloc_id
-      end
+      @id = self.class.alloc_id unless @id && @id > 0
       DataExplorer.pstore_set "q:#{id}", to_hash
     end