From 2650c3b3e6a67aeee7a38b16b161780997136a1e Mon Sep 17 00:00:00 2001
From: Simon <oleurud@gmail.com>
Date: Fri, 8 Sep 2017 17:51:02 +0200
Subject: [PATCH] removing self=this assignment

---
 lib/cartodb/models/dataview/date-histogram.js    | 10 ++++------
 lib/cartodb/models/dataview/numeric-histogram.js | 10 ++++------
 2 files changed, 8 insertions(+), 12 deletions(-)

diff --git a/lib/cartodb/models/dataview/date-histogram.js b/lib/cartodb/models/dataview/date-histogram.js
index 0e11befe..8315cd81 100644
--- a/lib/cartodb/models/dataview/date-histogram.js
+++ b/lib/cartodb/models/dataview/date-histogram.js
@@ -186,23 +186,21 @@ module.exports = class DateHistogram extends BaseDataview {
     }
 
     sql (psql, override, callback) {
-        let self = this;
-
         if (!callback) {
             callback = override;
             override = {};
         }
 
         if (this._columnType === null) {
-            this.getColumnType(psql, this.column, this.queries.no_filters, function (err, type) {
+            this.getColumnType(psql, this.column, this.queries.no_filters, (err, type)  => {
                 // assume numeric, will fail later
-                self._columnType = 'numeric';
+                this._columnType = 'numeric';
                 if (!err && !!type) {
-                    self._columnType = Object.keys(type).find(function (key) {
+                    this._columnType = Object.keys(type).find(function (key) {
                         return type[key];
                     });
                 }
-                self.sql(psql, override, callback);
+                this.sql(psql, override, callback);
             }, true); // use read-only transaction
             return null;
         }
diff --git a/lib/cartodb/models/dataview/numeric-histogram.js b/lib/cartodb/models/dataview/numeric-histogram.js
index 891de107..4968bd58 100644
--- a/lib/cartodb/models/dataview/numeric-histogram.js
+++ b/lib/cartodb/models/dataview/numeric-histogram.js
@@ -178,23 +178,21 @@ module.exports = class NumericHistogram extends BaseDataview {
     }
 
     sql (psql, override, callback) {
-        let self = this;
-
         if (!callback) {
             callback = override;
             override = {};
         }
 
         if (this._columnType === null) {
-            this.getColumnType(psql, this.column, this.queries.no_filters, function (err, type) {
+            this.getColumnType(psql, this.column, this.queries.no_filters, (err, type) => {
                 // assume numeric, will fail later
-                self._columnType = 'numeric';
+                this._columnType = 'numeric';
                 if (!err && !!type) {
-                    self._columnType = Object.keys(type).find(function (key) {
+                    this._columnType = Object.keys(type).find(function (key) {
                         return type[key];
                     });
                 }
-                self.sql(psql, override, callback);
+                this.sql(psql, override, callback);
             }, true); // use read-only transaction
             return null;
         }