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@rfjs/data-label

v0.1.1

Published

Compose display label strings from data paths, value maps, and templates

Downloads

214

Readme

@rfjs/data-label

依資料路徑組成顯示用標籤字串,支援值翻譯與安全的 ${path} 模板。

安裝

npm install @rfjs/data-label

用法

import { composeLabel } from '@rfjs/data-label';

const source = { contract: [{ type: 'ProductSales' }], qty: 3 };

// 有模板(可用 ${aliasKey}、${_索引}、${path}):
composeLabel(
  {
    fields: [{ path: 'contract[0].type', aliasKey: 'type' }, { path: 'qty' }],
    valueMap: [{ key: 'ProductSales', value: '產品銷售契約' }],
    template: '${type} x${_1}',
  },
  source,
);
// → '產品銷售契約 x3'

// 無模板 → 各欄位值以空白 join:
composeLabel({ fields: [{ path: 'contract[0].type' }, { path: 'qty' }] }, source);
// → 'ProductSales 3'

${token} 會以去掉 [ ] . 後的形式查表,所以 ${contract[0]}${_0}${alias1} 都能解析。未知 token 與 nullish 值會輸出空字串 —— 組字不會丟錯。

自訂渲染器

預設引擎只做 ${path} 取值替換(不執行任何程式碼)。需要進階模板時,自行傳入 render:

import _ from 'lodash';
import { composeLabel, normalizeKey } from '@rfjs/data-label';

composeLabel(spec, source, {
  render: (template, values) => _.template(normalizeKey(template))(values),
});

API

  • composeLabel(spec, source, options?)string
  • buildLabelValues(spec, source) → 查找表(_N、原始 path、正規化 path、aliasKey)
  • normalizeKey(path) → 去掉 []. 的 path