Resolve "Metrics drop down doesn't show all environment, some not clickable"

app/assets/javascripts/monitoring/stores/monitoring_store.js

 import _ from 'underscore';
 
 function sortMetrics(metrics) {
-  return _.chain(metrics).sortBy('title').sortBy('weight').value();
+  return _.chain(metrics)
+    .sortBy('title')
+    .sortBy('weight')
+    .value();
 }
 
 function normalizeMetrics(metrics) {
@@ -39,7 +42,9 @@ export default class MonitoringStore {
   }
 
   storeEnvironmentsData(environmentsData = []) {
-    this.environmentsData = environmentsData;
+    this.environmentsData = environmentsData.filter(
+      environment => !!environment.latest.last_deployment,
+    );
   }
 
   getMetricsCount() {

spec/javascripts/monitoring/mock_data.js

@@ -6561,6 +6561,9 @@ export const environmentData = [
       folder_path: '/root/hello-prometheus/environments/folders/production',
       created_at: '2018-06-29T16:53:38.301Z',
       updated_at: '2018-06-29T16:57:09.825Z',
+      last_deployment: {
+        id: 127,
+      },
     },
   },
   {
@@ -6580,6 +6583,20 @@ export const environmentData = [
       folder_path: '/root/hello-prometheus/environments/folders/review',
       created_at: '2018-07-03T18:39:41.702Z',
       updated_at: '2018-07-03T18:44:54.010Z',
+      last_deployment: {
+        id: 128,
+      },
+    },
+  },
+  {
+    name: 'no-deployment',
+    size: 1,
+    latest: {
+      id: 36,
+      name: 'no-deployment/noop-branch',
+      state: 'available',
+      created_at: '2018-07-04T18:39:41.702Z',
+      updated_at: '2018-07-04T18:44:54.010Z',
     },
   },
 ];

spec/javascripts/monitoring/monitoring_store_spec.js

 import MonitoringStore from '~/monitoring/stores/monitoring_store';
-import MonitoringMock, { deploymentData } from './mock_data';
+import MonitoringMock, { deploymentData, environmentData } from './mock_data';
 
 describe('MonitoringStore', function () {
   this.store = new MonitoringStore();
@@ -21,4 +21,9 @@ describe('MonitoringStore', function () {
     expect(this.store.deploymentData.length).toEqual(3);
     expect(typeof this.store.deploymentData[0]).toEqual('object');
   });
+
+  it('only stores environment data that contains deployments', () => {
+    this.store.storeEnvironmentsData(environmentData);
+    expect(this.store.environmentsData.length).toEqual(2);
+  });
 });