FIX: graphs should go to zero for missing dates

app/assets/javascripts/admin/models/report.js.es6

@@ -1,6 +1,7 @@
 import { ajax } from 'discourse/lib/ajax';
 import round from "discourse/lib/round";
 import { fmt } from 'discourse/lib/computed';
+import { fillMissingDates } from 'discourse/lib/utilities';
 
 const Report = Discourse.Model.extend({
   reportUrl: fmt("type", "/admin/reports/%@"),
@@ -142,14 +143,13 @@ Report.reopenClass({
         group_id: groupId
       }
     }).then(json => {
-      // Add a percent field to each tuple
+      // Add zero values for missing dates
-      let maxY = 0;
+      if (json.report.data.length > 0) {
-      json.report.data.forEach(row => {
+        const startDateFormatted = moment(json.report.start_date).format('YYYY-MM-DD');
-        if (row.y > maxY) maxY = row.y;
+        const endDateFormatted = moment(json.report.end_date).format('YYYY-MM-DD');
-      });
+        json.report.data = fillMissingDates(json.report.data, startDateFormatted, endDateFormatted);
-      if (maxY > 0) {
-        json.report.data.forEach(row => row.percentage = Math.round((row.y / maxY) * 100));
       }
+
       const model = Report.create({ type: type });
       model.setProperties(json.report);
       return model;

app/assets/javascripts/admin/routes/admin-search-logs-term.js.es6

@@ -1,4 +1,5 @@
 import { ajax } from 'discourse/lib/ajax';
+import { fillMissingDates } from 'discourse/lib/utilities';
 
 export default Discourse.Route.extend({
   queryParams: {
@@ -15,6 +16,13 @@ export default Discourse.Route.extend({
         search_type: params.searchType
       }
     }).then(json => {
+      // Add zero values for missing dates
+      if (json.term.data.length > 0) {
+        const startDate = (json.term.period === "all") ? moment(json.term.data[0].x).format('YYYY-MM-DD') : moment(json.term.start_date).format('YYYY-MM-DD');
+        const endDate = moment(json.term.end_date).format('YYYY-MM-DD');
+        json.term.data = fillMissingDates(json.term.data, startDate, endDate);
+      }
+
       const model = Ember.Object.create({ type: "search_log_term" });
       model.setProperties(json.term);
       return model;

app/assets/javascripts/discourse/lib/utilities.js.es6

@@ -450,5 +450,25 @@ export function clipboardData(e, canUpload) {
   return { clipboard, types, canUpload, canPasteHtml };
 }
 
+export function fillMissingDates(data, startDate, endDate) {
+  const startMoment = moment(startDate, "YYYY-MM-DD");
+  const endMoment = moment(endDate, "YYYY-MM-DD");
+  const countDays = endMoment.diff(startMoment, 'days');
+  let currentMoment = startMoment;
+
+  for (let i = 0; i <= countDays; i++) {
+    let date = (data[i]) ? moment(data[i].x, "YYYY-MM-DD") : null;
+    if (i === 0 && date.isAfter(startMoment)) {
+      data.splice(i, 0, { "x" : startMoment.format("YYYY-MM-DD"), 'y': 0 });
+    } else {
+      if (!date || date.isAfter(moment(currentMoment))) {
+        data.splice(i, 0, { "x" : currentMoment, 'y': 0 });
+      }
+    }
+    currentMoment = moment(currentMoment).add(1, "day").format("YYYY-MM-DD");
+  }
+  return data;
+}
+
 // This prevents a mini racer crash
 export default {};

app/models/search_log.rb

@@ -77,7 +77,10 @@ class SearchLog < ActiveRecord::Base
     return {
       type: "search_log_term",
       title: I18n.t("search_logs.graph_title"),
-      data: details
+      start_date: start_of(period),
+      end_date: Time.zone.now,
+      data: details,
+      period: period.to_s
     }
   end
 

spec/models/search_log_spec.rb

@@ -172,6 +172,7 @@ RSpec.describe SearchLog, type: :model do
 
       SearchLog.where(term: 'ruby', ip_address: '127.0.0.2').update_all(search_result_id: 24)
       term_click_through_details = SearchLog.term_details("ruby", :all, :click_through_only)
+      expect(term_click_through_details[:period]).to eq("all")
       expect(term_click_through_details[:data][0][:y]).to eq(1)
     end
   end

test/javascripts/lib/utilities-test.js.es6

@@ -14,7 +14,8 @@ import {
   validateUploadedFiles,
   getUploadMarkdown,
   caretRowCol,
-  setCaretPosition
+  setCaretPosition,
+  fillMissingDates
 } from 'discourse/lib/utilities';
 import * as Utilities from 'discourse/lib/utilities';
 
@@ -253,3 +254,12 @@ QUnit.test("caretRowCol", assert => {
 
   document.body.removeChild(textarea);
 });
+
+QUnit.test("fillMissingDates", assert => {
+  const startDate = "2017-11-12"; // YYYY-MM-DD
+  const endDate = "2017-12-12"; // YYYY-MM-DD
+  const data = '[{"x":"2017-11-12","y":3},{"x":"2017-11-27","y":2},{"x":"2017-12-06","y":9},{"x":"2017-12-11","y":2}]';
+
+  assert.equal(fillMissingDates(JSON.parse(data), startDate, endDate).length, 31,
+        "it returns a JSON array with 31 dates");
+});