1

I could implement the export data to csv on node webkit with node fs modules. But now I want to prompt the user to save the file in his/her desired location. Like the download pop-up in case of html. I tried doing on the lines of this code and even this file dialog. Could someone help me find a way out of this. Here's my code.

fs.writeFile("export.csv", data, function(err) {
    if(err) {
       console.log(err);
    } else {
        $('#export_file').show();
        $('#export_file input').on('change', function (event) {
            console.log($(this).val());
            console.log("The file was saved!");
        });
    }
});

<div id="export_file" style="display:none">
    <input type="file" nwsaveas nwworkingdir="/data/input/" />
</div>
Community
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user2991307
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2 Answers2

4

I found a solution here http://9ijy.net/blog/view/6

Step 1 In your html file, add a Input tag block like below:

<input id="export_file" type="file" nwsaveas style="display:none" nwworkingdir=""/>

Step 2 Add a new function in your javascript file like below:

function saveFile(name,data) {
    var chooser = document.querySelector(name);
    chooser.addEventListener("change", function(evt) {
      console.log(this.value); // get your file name
     var fs = require('fs');// save it now
fs.writeFile(this.value, data, function(err) {
    if(err) {
       alert("error"+err);
    }
});
    }, false);

    chooser.click();  
  }

Step 3 Save your file where ever you like by using saveFile(name,data) function like below:

...

_exportCSV="you data to save";

saveFile('#export_file',_exportCSV);
user3591588
  • 66
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0
  • You are writing the file dialog code as a callback to fs.writeFile. A callback means it will be called AFTER the file is saved. This is what might be happening right now. 1) File is written in the current directory where node-webkit app is running from. 2) When the file is saved without any errors, the dialog shows up. But this dialog is of no help.
  • Instead, show the dialog earlier and get the file-path from it(https://github.com/rogerwang/node-webkit/wiki/File-dialogs). Pass this path as the first arg in fs.writeFile(). Done.
Sagar
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