fix: only omit undefined row cell

packages/s2-core/__tests__/bugs/issue-860-spec.ts

@@ -0,0 +1,30 @@
+/**
+ * @description spec for issue #860
+ * https://github.com/antvis/S2/issues/860
+ * Column should not be formatted
+ *
+ */
+import { getContainer } from 'tests/util/helpers';
+import dataCfg from '../data/data-issue-860.json';
+import { PivotSheet, SpreadSheet } from '@/sheet-type';
+import { S2Options } from '@/common/interface';
+
+const s2options: S2Options = {
+  width: 600,
+  height: 400,
+  frozenRowHeader: false,
+};
+
+describe('Column Formatter Tests', () => {
+  let s2: SpreadSheet;
+
+  beforeEach(() => {
+    s2 = new PivotSheet(getContainer(), dataCfg, s2options);
+    s2.render();
+  });
+  test('should get correct row hierarchy with empty row node', () => {
+    const layoutResult = s2.facet.layoutResult;
+    expect(layoutResult.rowNodes).toHaveLength(8);
+    expect(layoutResult.rowLeafNodes).toHaveLength(5);
+  });
+});

packages/s2-core/__tests__/data/data-issue-860.json

@@ -0,0 +1,74 @@
+{
+  "fields": {
+    "rows": ["date", "city", "type"],
+    "columns": [],
+    "values": ["a_sum", "b_sum"],
+    "valueInCols": true
+  },
+  "meta": [
+    {
+      "field": "date",
+      "name": "日期"
+    },
+    {
+      "field": "city",
+      "name": "城市"
+    },
+    {
+      "field": "type",
+      "name": "类型"
+    },
+    {
+      "field": "a_sum",
+      "name": "A类求和"
+    },
+    {
+      "field": "b_sum",
+      "name": "B类求和"
+    }
+  ],
+  "data": [
+    {
+      "date": "2021-12-01",
+      "city": "A市",
+      "type": "电子",
+      "a_sum": 6
+    },
+    {
+      "date": "2021-12-01",
+      "city": "A市",
+      "type": "电子",
+      "b_sum": 6
+    },
+    {
+      "date": "2021-12-01",
+      "city": "A市",
+      "type": "",
+      "b_sum": 6
+    },
+    {
+      "date": "2021-12-01",
+      "city": "A市",
+      "type": "undefined",
+      "b_sum": 6
+    },
+    {
+      "date": "2021-12-01",
+      "city": "A市",
+      "type": null,
+      "b_sum": 6
+    },
+    {
+      "date": "2021-12-01",
+      "city": "B市",
+      "type": "日用",
+      "a_sum": 1
+    },
+    {
+      "date": "2021-12-01",
+      "city": "B市",
+      "type": "",
+      "b_sum": 1
+    }
+  ]
+}

packages/s2-core/__tests__/unit/sheet-type/pivot-sheet-spec.ts

@@ -706,6 +706,27 @@ describe('PivotSheet Tests', () => {
       expect(sheet.dataCfg.fields.valueInCols).toBeTruthy();
     });
 
+    it('should render row nodes if rows fields contain empty string value', () => {
+      const layoutDataCfg: S2DataConfig = {
+        fields: {
+          rows: ['row'],
+        },
+        data: [
+          {
+            row: 'a',
+          },
+          {
+            row: '',
+          },
+        ],
+      } as S2DataConfig;
+      const sheet = new PivotSheet(getContainer(), layoutDataCfg, s2Options);
+      sheet.render();
+
+      const { layoutResult } = sheet.facet;
+      expect(layoutResult.rowNodes).toHaveLength(2);
+    });
+
     it('should only render value nodes in column if rows & columns fields is empty', () => {
       const layoutDataCfg: S2DataConfig = customMerge(dataCfg, {
         fields: {

packages/s2-core/src/facet/layout/build-gird-hierarchy.ts

@@ -1,4 +1,4 @@
-import { compact, isEmpty } from 'lodash';
+import { filter, isEmpty, isUndefined } from 'lodash';
 import { FieldValue, GridHeaderParams } from '@/facet/layout/interface';
 import { TotalMeasure } from '@/facet/layout/total-measure';
 import { layoutArrange } from '@/facet/layout/layout-hooks';
@@ -39,6 +39,7 @@ export const buildGridHierarchy = (params: GridHeaderParams) => {
   } = params;
 
   const index = fields.indexOf(currentField);
+
   const { dataSet, values, spreadsheet } = facetCfg;
   const fieldValues: FieldValue[] = [];
 
@@ -72,7 +73,7 @@ export const buildGridHierarchy = (params: GridHeaderParams) => {
       if (currentField === EXTRA_FIELD) {
         fieldValues.push(...dataSet.fields?.values);
       } else {
-        fieldValues.push(fieldName || currentField);
+        fieldValues.push(fieldName);
       }
     }
     // hide measure in columns
@@ -86,10 +87,16 @@ export const buildGridHierarchy = (params: GridHeaderParams) => {
       spreadsheet,
     });
   }
+
+  const omitUndefinedFieldValues = filter(
+    fieldValues,
+    (value) => !isUndefined(value),
+  );
+
   generateHeaderNodes({
     currentField,
     fields,
-    fieldValues: compact(fieldValues),
+    fieldValues: omitUndefinedFieldValues,
     facetCfg,
     hierarchy,
     parentNode,