function category() {
  var data = Process("models.category.get", {
    wheres: [{ column: "parent_id", value: null }],
  });
  return data;
}

// Call other processes in JS and call the category method above
function getData() {
  return Process("scripts.category.category");
}

Running the command line call yao run scripts.category.category is equivalent to yao run scripts.category.getData

Execute the command yao migrate -n category and you can see that the corresponding data table and data are generated in the database

{
  "label": "Category Tree",
  "version": "1.0.0",
  "description": "Category Tree",
  "nodes": [
    {
      "name": "Category",
      "engine": "xiang",
      "query": {
        "select": ["id", "name", "name as label", "id as value", "parent_id"],
        "wheres": [{ ":deleted_at": "deleted", "=": null }],
        "from": "category",
        "limit": 1000
      }
    },
    {
      "name": "Category Tree",
      "process": "xiang.helper.ArrayTree",
      "args": ["{{$res.category}}", { "parent": "parent_id" }]
    }
  ],
  "output": "{{$res.category tree}}"
}

Execute yao run flows.category to see the following output in the console:

[
  {
    "children": [
      {
        "children": [],
        "id": 2,
        "label": "Secondary Classification",
        "name": "Secondary Category",
        "parent_id": 1,
        "value": 2
      }
    ],
    "id": 1,
    "label": "First-class classification",
    "name": "First-level classification",
    "parent_id": null,
    "value": 1
  }
]