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javascript - 通过 Patch 方法更新 Yaml 文件不起作用

问题描述

我有一个这种格式的 Yaml 文件（layouts.yaml），我想通过 REST Api 执行 crud 操作：

Layouts:
        -
          Name: Default Layout
          LayoutId : 1
          ConfiguredSegments:
            LiveA :
                Height : 100
                Id : LiveA
            Ref1A :
                Height : 100
                Id : Ref1A

我的控制器根据布局 ID 更新布局的功能（我尝试了 2 种不起作用的方法）：

第一种方式：//这似乎不起作用

const raw = fs.readFileSync("layouts.yaml", 'utf8');
    const layoutData = YAML.load(raw);
    //function to update specific layout based on LayoutId
    export const updateSpecificLayout = (req, res)=>{
        const { id } = req.params;
        const { ConfiguredSegments } = req.body;
    
        const getLayoutList = JSON.parse(JSON.stringify(layoutData)); 
        
        getLayoutList.forEach(element => {if(element.LayoutId == id) element.ConfiguredSegments = 
        ConfiguredSegments 
            
        });
        let yaml = YAML.dump(getLayoutList);
         
          fs.writeFileSync("layouts.yaml", yaml, function (err,file){
             if(err) throw err;        
             console.log(`Layout with the id:${id} has been updated`);
      })      
    }

第二种方式：//这似乎也不起作用

    const raw = fs.readFileSync("layouts.yaml", 'utf8');
    const layoutData = YAML.load(raw);
    //function to update specific layout based on LayoutId
    export const updateSpecificLayout = (req, res)=>{
        const { id } = req.params;
        const { ConfiguredSegments } = req.body;
    
        const getLayout = JSON.parse(JSON.stringify(layoutData)); 
        const foundLayout = getLayout.Layouts.find((layout) => layout.LayoutId == id);
    
        if(ConfiguredSegments)foundLayout.ConfiguredSegments = ConfiguredSegments;
        console.log(`Layout with the id:${id} has been updated`);
    }

通过邮递员，我正在使用以下正文测试我的 api 补丁请求：

    {
    "ConfiguredSegments": {
    "Ref2A": {
    "Height": 100,
    "Id": "LiveA"
    },
    "Ref3A": {
    "Height": 100,
    "Id": "Ref1A"
    }
    }
    }
    
 But the yaml file is not getting updated.Any other ways to achieve this ?

标签： javascriptnode.jsyaml

解决方案

您可以尝试使用此方法。定义一个能够找到并替换您正在寻找的对象的函数。您的控制器功能：

export const updateSpecificLayout = (req, res)=>{
    const { id } = req.params;
    const { ConfiguredSegments } = req.body;

    const getLayoutList = JSON.parse(JSON.stringify(layoutData)); 

    const layoutToBeUpdated = getLayoutList.Layouts.find((layout) => layout.LayoutId == id );

    findAndReplace(getLayoutList.Layouts,layoutToBeUpdated.ConfiguredSegments,ConfiguredSegments)

      let yaml = YAML.dump(getLayoutList);
     
       fs.writeFileSync("layouts.yaml", yaml, function (err,file){
          if(err) throw err;        
          console.log(`Layout with the id:${id} has been updated`);
  })      
}

可以查找和替换数据的辅助函数。

// Helper function to update layout data
function findAndReplace(object, value, replacevalue) {
    for (var x in object) {
      if (object.hasOwnProperty(x)) {
        if (typeof object[x] == 'object') {
          findAndReplace(object[x], value, replacevalue);
        }
        if (object[x] == value) { 
          object["ConfiguredSegments"] = replacevalue;
           break; 
        }
      }
    }
  }

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