Generate a folder structure based on the Delta data provided by the Dropbox API utilizing the file paths

Question

Generate a folder structure based on the Delta data provided by the Dropbox API utilizing the file paths

I came across a query on how to convert a file path into a treeview, and I'm uncertain about achieving the desired outcome using JavaScript:

My goal is to transform an array of paths into a JSON tree structure:

 var paths = [
        "/org/openbmc/UserManager/Group",
        "/org/stackExchange/StackOverflow",
        "/org/stackExchange/StackOverflow/Meta",
        "/org/stackExchange/Programmers",
        "/org/stackExchange/Philosophy",
        "/org/stackExchange/Religion/Christianity",
        "/org/openbmc/records/events",
        "/org/stackExchange/Religion/Hinduism",
        "/org/openbmc/HostServices",
        "/org/openbmc/UserManager/Users",
        "/org/openbmc/records/transactions",
        "/org/stackExchange/Religion/Islam",
        "/org/openbmc/UserManager/Groups",
        "/org/openbmc/NetworkManager/Interface"
    ];

The expected JSON structure based on the folder paths should look like this:

        var xyz = [{
            "path": "photos",
            "name": "photos",
            "children": [
              {
                "path": "photos/summer",
                "name": "summer",
                "children": [
                  {
                    "path": "photos/summer/june",
                    "name": "june",
                    "children": [
                      {
                        "path": "photos/summer/june/windsurf",
                        "name": "windsurf",
                      }
                    ]
                  }
                ]
              },
              {
                "path": "photos/winter",
                "name": "winter",
                "children": [
                  {
                    "path": "photos/winter/january",
                    "name": "january",
                    "children": [
                      {
                        "path": "photos/winter/january/ski",
                        "name": "ski",
                      },
                      {
                        "path": "photos/winter/january/snowboard",
                        "name": "snowboard",
                      }
                    ]
                  }
                ]
              }
            ]
    }];

I attempted to use the following function, but it's not yielding the desired results:

var parsePathArray = function(paths) {
var parsed = [];
for (var i = 0; i < paths.length; i++) {
    var position = parsed;
    var split = paths[i].split('/');
    for (var j = 0; j < split.length; j++) {
        if (split[j] !== "") {
            if (typeof position[split[j]] === 'undefined')
                position[split[j]] = {};
            position.children = [position[split[j]]];
            position.name = split[j];
            position = position[split[j]];

        }
    }
}
return parsed;
}

javascript angularjs arrays

Answer 1

Answer №1

Just to clarify, I created this response as a way to engage in an interesting exercise. However, it's disheartening that you didn't make an effort to understand and failed to elaborate on the specific areas of confusion...

I took a different approach in my explanation, so rather than copying and pasting the code directly, you'll need to grasp the concept behind it.

Let me briefly outline each step without delving into details that may already be familiar to you.

Step 1:

Transform a list of strings into a list of arrays:

["a/1", "a/2", "b/1"] -> [["a", "1"], ["a", "2"], ["b", "1"]]

We utilize methods like String.prototype.slice to eliminate the leading "/", and String.prototype.split with your chosen delimiter to convert it into an array: path.split("/")

Step 2

Iterate through each folder and include them in an object.

[["a", "1"], ["a", "2"], ["b", "1"]] -> { a: { 1: {}, 2: {} }, b: { 1: {} } }

We leverage a reducer that accesses objects using bracket notation obj[key], creating new folder objects and returning the deepest location as needed.

Step 3

Recursively traverse the keys of your object and transform them into a specific layout:

{ a: { 1: { } } -> { name: "a", path: [], children: [ /* ... */ ] }

We extract a list of keys (folder names) using Object.keys and recursively call for each nested object.

Please update your response by specifying the exact step where you're facing difficulties. This will not only assist others in providing assistance but also allow me to offer a more detailed explanation of that particular step.

Answer 2

Just to clarify, I created this response as a way to engage in an interesting exercise. However, it's disheartening that you didn't make an effort to understand and failed to elaborate on the specific areas of confusion...

I took a different approach in my explanation, so rather than copying and pasting the code directly, you'll need to grasp the concept behind it.

Let me briefly outline each step without delving into details that may already be familiar to you.

Step 1:

Transform a list of strings into a list of arrays:

["a/1", "a/2", "b/1"] -> [["a", "1"], ["a", "2"], ["b", "1"]]

We utilize methods like String.prototype.slice to eliminate the leading "/", and String.prototype.split with your chosen delimiter to convert it into an array: path.split("/")

Step 2

Iterate through each folder and include them in an object.

[["a", "1"], ["a", "2"], ["b", "1"]] -> { a: { 1: {}, 2: {} }, b: { 1: {} } }

We leverage a reducer that accesses objects using bracket notation obj[key], creating new folder objects and returning the deepest location as needed.

Step 3

Recursively traverse the keys of your object and transform them into a specific layout:

{ a: { 1: { } } -> { name: "a", path: [], children: [ /* ... */ ] }

We extract a list of keys (folder names) using Object.keys and recursively call for each nested object.

Please update your response by specifying the exact step where you're facing difficulties. This will not only assist others in providing assistance but also allow me to offer a more detailed explanation of that particular step.

Generate a folder structure based on the Delta data provided by the Dropbox API utilizing the file paths

Answer №1

Step 1:

Step 2

Step 3

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