Ticks callback is now called with `this` as scope (#4632)

diff --git a/src/core/core.scale.js b/src/core/core.scale.js
index 6f2634c609aa6575ef52a37ef1652d1104b9f53b..7c418575ec2b49fc5f19ea68ad514091774545be 100644 (file)
--- a/src/core/core.scale.js
+++ b/src/core/core.scale.js
@@ -298,7 +298,7 @@ module.exports = function(Chart) {
                        var me = this;
                        // Convert ticks to strings
                        var tickOpts = me.options.ticks;
-                       me.ticks = me.ticks.map(tickOpts.userCallback || tickOpts.callback);
+                       me.ticks = me.ticks.map(tickOpts.userCallback || tickOpts.callback, this);
                },
                afterTickToLabelConversion: function() {
                        helpers.callback(this.options.afterTickToLabelConversion, [this]);