Merge pull request plotly#3903 from plotly/sunburst-ids-as-numbers

Accept number `0` as valid item in sunburst ids/parents

Author: etpinard

src/traces/sunburst/calc.js

@@ -37,6 +37,11 @@ exports.calc = function(gd, trace) {
         refs[v] = 1;
     };
 
+    // treat number `0` as valid
+    var isValidKey = function(k) {
+        return k || typeof k === 'number';
+    };
+
     var isValidVal = function(i) {
         return !hasVals || (isNumeric(vals[i]) && vals[i] >= 0);
     };
@@ -47,11 +52,11 @@ exports.calc = function(gd, trace) {
 
     if(hasIds) {
         len = Math.min(ids.length, parents.length);
-        isValid = function(i) { return ids[i] && isValidVal(i); };
+        isValid = function(i) { return isValidKey(ids[i]) && isValidVal(i); };
         getId = function(i) { return String(ids[i]); };
     } else {
         len = Math.min(labels.length, parents.length);
-        isValid = function(i) { return labels[i] && isValidVal(i); };
+        isValid = function(i) { return isValidKey(labels[i]) && isValidVal(i); };
         // TODO We could allow some label / parent duplication
         //
         // From AJ:
@@ -67,13 +72,13 @@ exports.calc = function(gd, trace) {
     for(var i = 0; i < len; i++) {
         if(isValid(i)) {
             var id = getId(i);
-            var pid = parents[i] ? String(parents[i]) : '';
+            var pid = isValidKey(parents[i]) ? String(parents[i]) : '';
 
             var cdi = {
                 i: i,
                 id: id,
                 pid: pid,
-                label: labels[i] ? String(labels[i]) : ''
+                label: isValidKey(labels[i]) ? String(labels[i]) : ''
             };
 
             if(hasVals) cdi.v = +vals[i];

test/jasmine/tests/sunburst_test.js

@@ -268,6 +268,28 @@ describe('Test sunburst calc:', function() {
         expect(Lib.warn).toHaveBeenCalledTimes(1);
         expect(Lib.warn).toHaveBeenCalledWith('Failed to build sunburst hierarchy. Error: ambiguous: b');
     });
+
+    it('should accept numbers (even `0`) are ids/parents items', function() {
+        _calc({
+            labels: ['Eve', 'Cain', 'Seth', 'Enos', 'Noam', 'Abel', 'Awan', 'Enoch', 'Azura'],
+            ids: [0, 1, 2, 3, 4, 5, 6, 7, 8],
+            parents: ['', 0, 0, 2, 2, 0, 0, 6, 0]
+        });
+
+        expect(extract('id')).toEqual(['0', '1', '2', '3', '4', '5', '6', '7', '8']);
+        expect(extract('pid')).toEqual(['', '0', '0', '2', '2', '0', '0', '6', '0']);
+    });
+
+    it('should accept mix typed are ids/parents items', function() {
+        _calc({
+            labels: ['Eve', 'Cain', 'Seth', 'Enos', 'Noam', 'Abel', 'Awan', 'Enoch', 'Azura'],
+            ids: [true, 1, '2', 3, 4, 5, 6, 7, 8],
+            parents: ['', true, true, 2, 2, 'true', 'true', '6', true]
+        });
+
+        expect(extract('id')).toEqual(['true', '1', '2', '3', '4', '5', '6', '7', '8']);
+        expect(extract('pid')).toEqual(['', 'true', 'true', '2', '2', 'true', 'true', '6', 'true']);
+    });
 });
 
 describe('Test sunburst hover:', function() {