图表

目前，NocoBase 图表区块需要通过配置文件或编写代码来实现。图表库使用的是 g2plot，理论上支持 https://g2plot.antv.vision/en/examples 上的所有图表。目前可以配置的图表包括：

柱状图
条形图
折线图
饼图
面积图

添加和编辑图表

图表配置

初始化的图表配置是静态的 JSON 数据

{
  "data": [
    {
      "type": "furniture & appliances",
      "sales": 38
    },
    {
      "type": "食品油副食",
      "sales": 52
    },
    {
      "type": "Fresh Fruit",
      "sales": 61
    },
    {
      "type": "美容洗护",
      "sales": 145
    },
    {
      "type": "Maternity & Baby Products",
      "sales": 48
    },
    {
      "type": "Imported Food",
      "sales": 38
    },
    {
      "type": "Food & Beverage",
      "sales": 38
    },
    {
      "type": "Home Cleaning",
      "sales": 38
    }
  ],
  "xField": "type",
  "yField": "sales",
  "label": {
    "position": "middle",
    "style": {
      "fill": "#FFFFFF",
      "opacity": 0.6
    }
  },
  "xAxis": {
    "label": {
      "autoHide": true,
      "autoRotate": false
    }
  },
  "meta": {
    "type": {
      "alias": "category"
    },
    "sales": {
      "alias": "sales"
    }
  }
}

data 支持表达式的写法，NocoBase 内置了 requestChartData(config) 函数，用于自定义图表数据的请求。Config 参数说明见： https://github.com/axios/axios#request-config

示例：

{
  "data": "{{requestChartData({ url: 'collectionName:getColumnChartData' })}}",
  "xField": "type",
  "yField": "sales",
  "label": {
    "position": "middle",
    "style": {
      "fill": "#FFFFFF",
      "opacity": 0.6
    }
  },
  "xAxis": {
    "label": {
      "autoHide": true,
      "autoRotate": false
    }
  },
  "meta": {
    "type": {
      "alias": "category"
    },
    "sales": {
      "alias": "sales"
    }
  }
}

HTTP API 示例：

GET /api/collectionName:getColumnChartData

Response Body
{
    "data": [
    {
      "type": "furniture & appliances",
      "sales": 38
    },
    {
      "type": "食品油副食",
      "sales": 52
    },
    {
      "type": "Fresh Fruit",
      "sales": 61
    },
    {
      "type": "美容洗护",
      "sales": 145
    },
    {
      "type": "Maternity & Baby Products",
      "sales": 48
    },
    {
      "type": "Imported Food",
      "sales": 38
    },
    {
      "type": "Food & Beverage",
      "sales": 38
    },
    {
      "type": "Home Cleaning",
      "sales": 38
    }
  ]
}

Server 端实现

为名为 collectionName 的数据表，添加自定义的 getColumnChartData 方法：

app.resourcer.registerActionHandlers({
  'collectionName:getColumnChartData': (ctx, next) => {
    // The data to be output
    ctx.body = [];
    await next();
  },
});

视频

静态数据

动态数据

JS 表达式

Syntax

{
  "key1": "{{ js expression }}"
}

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图表