I want to print path of object key, dynamically. Here is my code:

   const Tree = ({ data }) => {
     let path = "onboarding";
  
      return Object.keys(data).map((key) => {
        if (Array.isArray(data[key])) {
          path = path   "."   key;
          return (
              <Tree data={data[key]}></Tree> 
          );
        }

        if (typeof data[key] === "object") {
          path = path   "."   key;
          return (
              <Tree data={data[key]}></Tree>
          );
        } else {
          path = path   "."   key;    
          return (
            <input defaultValue={data[key]}
              style={{ fontWeight: "bold" }}
              disabled={!this.props.isEditable}/>

          );
        }
      });
    };

and its my data

  onboarding: {
    enumType: 1,
    key: "key1",
    steps: [
      {
        title: "STEP ONE",
        description: "des1",
        instructions: [
          {
            icon: "step_power",
            label: {
              text: "text1",
              color: "A11111",
              location: "top",
            },
          },
        ],
      },
      {
        title: "STEP TWO",
        description: "des2",
        instructions: [
          {
            icon: "step_power",
            label: {
              text: "text2",
              color: "A11111",
              location: "top",
            },
          },
       ],
    }

And i want to print path of key for each iteration, expected output :

• "enumType"
• "key"
• "steps"
• "steps[0]"
• "steps[0].title"
• . . .
• "steps[1].instructions[0].label.location"

CodePudding user response：

You have to pass the path along as prop, I made a codebox: https://codesandbox.io/s/old-browser-crgd9r

Edit: adding relevant code here as comment suggested

const Tree = ({ path, data }) => {
  // We have 3 cases: Array, Object or neither
  // If we have an array we want to cycle through the elements
  // and keep track of the index
  // If we have an object we want to cicle through the keys
  // otherwise just return the value

  if (Array.isArray(data)) {
    return data.map((element, index) => {
      let currentPath = `${path}[${index}]`;
      return (
        <Tree
          path={currentPath}
          data={element}
          arrayIndex={index}
          key={currentPath}
        ></Tree>
      );
    });
  } else if (data instanceof Object) {
    return Object.keys(data).map((key) => {
      let currentPath = path !== "" ? `${path}.${key}` : key;
      return <Tree data={data[key]} path={currentPath} key={currentPath} />;
    });
  } else {
    return (
      <div>
        <label>{path}</label>
        <input defaultValue={data} style={{ fontWeight: "bold" }} />
      </div>
    );
  }
};