arrays - Ant Design TreeSelect map data from API to title value keys

Question

I am trying to populate a Tree Select in ANT Design from API, the API Response type is so

projectData = ProjectData[];

export type ProjectData = {
    key?: number;
    projectId: number;
    projectName: string;
    description: string;
    level: number;
    parent: string;
    parentId: number;
    children: ProjectData[];
};

for TreeSelect I can't find an option to set title to projectName and value to projectId

Tree select takes treeData values in this format

const treeData = [
  {
    title: 'Node1',
    value: '0-0',
    children: [
      {
        title: 'Child Node1',
        value: '0-0-1',
      },
      {
        title: 'Child Node2',
        value: '0-0-2',
      },
    ],
  },
  {
    title: 'Node2',
    value: '0-1',
  },
];

For example if I am using a a Cascader in ant design I can set the mapping with the fieldNames prop like so

fieldNames={{ label: 'projectName', value: 'projectId', children: 'children' }}

is it possible at all to do something like this with TreeSelect?

I have a ProjectData[] as mentioned above and I need to generate a tree select using that data. What is the best way?

Now If I use Cascader I can only select the Last(deepest) entry and not a node which is a parent. Thus I have to use Treeselect and Can't figure out how to map it properly.

------- Edit -----------

Added a sample of data with implementation of cascader and treeselect on codesandbox here

question from:https://stackoverflow.com/questions/65909094/ant-design-treeselect-map-data-from-api-to-title-value-keys

Answer 1

Upon reading the docs, it seems like you can do this through the prop treeDataSimpleMode. This would change the expected format of the treeData from nested objects with children to a flat array where each object has its own id and a parent id pId. It also appears that we can specify the property names for id and pId which is exactly what you want. We can change treeNodeLabelProp from "label" to "projectName" and treeNodeFilterProp from "value" to "projectId".

So it seems like this might be all you need:

const MyTree = ({projectData}: {projectData: ProjectData[]}) => {
  return (
    <TreeSelect
      treeData={projectData}
      treeDataSimpleMode={{
        id: 'projectId',
        pId: 'parentId',
        //rootPId can be set too
      }}
      treeNodeLabelProp="projectName"
      treeNodeFilterProp="projectId"
    />
  )

I can't really test this out without sample data so let me know if you get any errors.

Note that the typings in the antd package are not strict enough to detect changes in the formatting. The DataNode interface makes all of the expected properties optional and has a string index signature to allow for any custom properties.

export interface DataNode {
    value?: RawValueType;
    title?: React.ReactNode;
    label?: React.ReactNode;
    key?: Key;
    disabled?: boolean;
    disableCheckbox?: boolean;
    checkable?: boolean;
    children?: DataNode[];
    /** Customize data info */
    [prop: string]: any;
}