Be able to accept timezone parameter

lib/cartodb/backends/dataview.js

@@ -80,7 +80,7 @@ DataviewBackend.prototype.getDataview = function (mapConfigProvider, user, param
                 overviewsQueryRewriter, queryRewriteData, { bbox: params.bbox }
             );
 
-            var overrideParams = _.reduce(_.pick(params, 'start', 'end', 'bins'),
+            var overrideParams = _.reduce(_.pick(params, 'start', 'end', 'bins', 'timezone'),
                 function castNumbers(overrides, val, k) {
                     if (!Number.isFinite(+val)) {
                         throw new Error('Invalid number format for parameter \'' + k + '\'');

lib/cartodb/controllers/base.js

@@ -26,6 +26,7 @@ var REQUEST_QUERY_PARAMS_WHITELIST = [
     'end', // number
     'column_type', // string
     'aggregation', //string
+    'timezone', // number
     // widgets search
     'q'
 ];

lib/cartodb/models/dataview/histogram.js

@@ -110,15 +110,6 @@ var dateBasicsQueryTpl = dot.template([
     ')'
 ].join(' \n'));
 
-var overrideBasicsQueryTpl = dot.template([
-    'basics AS (',
-    '  SELECT',
-    '    max({{=it._end}}) AS max_val, min({{=it._start}}) AS min_val,',
-    '    avg({{=it._column}}) AS avg_val, count(1) AS total_rows',
-    '  FROM ({{=it._query}}) _cdb_basics',
-    ')'
-].join('\n'));
-
 var dateOverrideBasicsQueryTpl = dot.template([
     'basics AS (',
     '    SELECT',
@@ -156,13 +147,14 @@ var dateHistogramQueryTpl = dot.template([
     '      THEN 0',
     '      ELSE GREATEST(1, LEAST(WIDTH_BUCKET({{=it._column}}, bins_array), bins_number)) - 1',
     '    END AS bin,',
+    '    date_part(\'epoch\', start_date)::numeric AS bin_start,',
     '    min(date_part(\'epoch\', {{=it._column}}))::numeric AS min,',
     '    max(date_part(\'epoch\', {{=it._column}}))::numeric AS max,',
     '    avg(date_part(\'epoch\', {{=it._column}}))::numeric AS avg,',
     '    count(*) AS freq',
     'FROM ({{=it._query}}) _cdb_histogram, basics, bins, nulls',
     'WHERE date_part(\'epoch\', {{=it._column}}) IS NOT NULL',
-    'GROUP BY bin, bins_number, bin_width, nulls_count, avg_val',
+    'GROUP BY bin, bins_number, bin_width, nulls_count, avg_val, start_date',
     'ORDER BY bin'
 ].join('\n'));
 
@@ -187,6 +179,7 @@ function Histogram(query, options, queries) {
     this.column = options.column;
     this.bins = options.bins;
     this.aggregation = options.aggregation;
+    this.timezone = options.timezone;
 
     this._columnType = null;
 }

test/acceptance/dataviews/histogram.js

@@ -204,4 +204,22 @@ describe('histogram-dataview for date column type', function() {
         });
     });
 
+    it.skip('should aggregate respecting timezone', function (done) {
+        var params = {
+            timezone: -7200 // GMT -2h
+        };
+
+        this.testClient = new TestClient(mapConfig, 1234);
+        this.testClient.getDataview('date_histogram', params, function(err, dataview) {
+            assert.ok(!err, err);
+            assert.equal(dataview.type, 'histogram');
+            assert.ok(dataview.bin_width > 0, 'Unexpected bin width: ' + dataview.bin_width);
+            assert.equal(dataview.bins.length, 5);
+            dataview.bins.forEach(function(bin) {
+                assert.ok(bin.min <= bin.max, 'bin min < bin max: ' + JSON.stringify(bin));
+            });
+
+            done();
+        });
+    });
 });

test/support/test-client.js

@@ -369,7 +369,7 @@ TestClient.prototype.getDataview = function(dataviewName, params, callback) {
                 own_filter: params.hasOwnProperty('own_filter') ? params.own_filter : 1
             };
 
-            ['bbox', 'bins', 'start', 'end', 'aggregation'].forEach(function(extraParam) {
+            ['bbox', 'bins', 'start', 'end', 'aggregation', 'timezone'].forEach(function(extraParam) {
                 if (params.hasOwnProperty(extraParam)) {
                     urlParams[extraParam] = params[extraParam];
                 }