diff --git a/plugin.rb b/plugin.rb
index 2a3333c..cbc7897 100644
--- a/plugin.rb
+++ b/plugin.rb
@@ -694,7 +694,7 @@ SQL
       check_params!
       return save_default_query if @id && @id < 0
 
-      @id = @id ||self.class.alloc_id
+      @id = @id || self.class.alloc_id
       DataExplorer.pstore_set "q:#{id}", to_hash
     end
 
@@ -981,10 +981,10 @@ SQL
     requires_plugin DataExplorer.plugin_name
 
     before_action :check_enabled
-    before_action :set_group, only: [:group_reports_index, :group_reports_show, :group_reports_run] 
+    before_action :set_group, only: [:group_reports_index, :group_reports_show, :group_reports_run]
     before_action :set_query, only: [:group_reports_show, :group_reports_run]
 
-    attr_reader :group, :query 
+    attr_reader :group, :query
 
     def check_enabled
       raise Discourse::NotFound unless SiteSetting.data_explorer_enabled?
@@ -1032,7 +1032,7 @@ SQL
     end
 
     def group_reports_index
-      return raise Discourse::NotFound unless guardian.user_is_a_member_of_group?(group)  
+      return raise Discourse::NotFound unless guardian.user_is_a_member_of_group?(group)
 
       respond_to do |format|
         format.html { render 'groups/show' }
@@ -1220,7 +1220,7 @@ SQL
         end
       end
     end
-    end  
+  end
 
   class DataExplorer::QuerySerializer < ActiveModel::Serializer
     attributes :id, :sql, :name, :description, :param_info, :created_by, :created_at, :username, :group_ids, :last_run_at
diff --git a/spec/controllers/queries_controller_spec.rb b/spec/controllers/queries_controller_spec.rb
index 80e51f5..abaa346 100644
--- a/spec/controllers/queries_controller_spec.rb
+++ b/spec/controllers/queries_controller_spec.rb
@@ -256,7 +256,7 @@ describe DataExplorer::QueryController do
 
     let(:user) { Fabricate(:user) }
     let(:group) { Fabricate(:group, users: [user]) }
-    
+
     before do
       log_in_user(user)
     end
@@ -280,15 +280,15 @@ describe DataExplorer::QueryController do
 
     describe "#group_reports_index" do
 
-      it "only returns queries that the group has access to" do   
-        group.add(user)   
-        make_query('SELECT 1 as value', {name: 'A'}, ["#{group.id}"])        
+      it "only returns queries that the group has access to" do
+        group.add(user)
+        make_query('SELECT 1 as value', { name: 'A' }, ["#{group.id}"])
 
         get :group_reports_index, params: { group_name: group.name }, format: :json
         expect(response.status).to eq(200)
         expect(response_json['queries'].length).to eq(1)
         expect(response_json['queries'][0]['name']).to eq('A')
-      end      
+      end
 
       it "returns a 404 when the user should not have access to the query " do
         user = Fabricate(:user)
@@ -310,10 +310,10 @@ describe DataExplorer::QueryController do
 
     describe "#group_reports_run" do
       it "calls run on QueryController" do
-        query = make_query('SELECT 1 as value', {name: 'B'}, ["#{group.id}"])
+        query = make_query('SELECT 1 as value', { name: 'B' }, ["#{group.id}"])
         controller.expects(:run).at_least_once
 
-        get :group_reports_run, params: { group_name: group.name, id: query.id }, format: :json        
+        get :group_reports_run, params: { group_name: group.name, id: query.id }, format: :json
       end
 
       it "returns a 404 when the user should not have access to the query " do
@@ -362,4 +362,3 @@ describe DataExplorer::QueryController do
     end
   end
 end
-
diff --git a/spec/guardian_spec.rb b/spec/guardian_spec.rb
index 7a5ae23..171a7b5 100644
--- a/spec/guardian_spec.rb
+++ b/spec/guardian_spec.rb
@@ -1,11 +1,15 @@
+# frozen_string_literal: true
+
 require 'rails_helper'
 
 describe Guardian do
 
+  before { SiteSetting.data_explorer_enabled = true }
+
   def make_query(group_ids = [])
     q = DataExplorer::Query.new
     q.id = Fabrication::Sequencer.sequence("query-id", 1)
-    q.name ="Query number #{q.id}"
+    q.name = "Query number #{q.id}"
     q.sql = "SELECT 1"
     q.group_ids = group_ids
     q.save
@@ -14,7 +18,7 @@ describe Guardian do
 
   let(:user) { build(:user) }
   let(:admin) { build(:admin) }
-  
+
   describe "#user_is_a_member_of_group?" do
     let(:group) { Fabricate(:group) }
 
@@ -49,14 +53,14 @@ describe Guardian do
 
     it "is false if the query does not contain the group id" do
       group.add(user)
-      
+
       expect(Guardian.new(user).user_can_access_query?(group, make_query)).to eq(false)
     end
 
     it "is false if the user is not member of the group" do
       query = make_query(["#{group.id}"])
-      
+
       expect(Guardian.new(user).user_can_access_query?(group, query)).to eq(false)
     end
   end
-end
\ No newline at end of file
+end