Django project structure and js directory calling?

Question

This is my Django Project structure:

Project
 -app_ABC
    -json_data
      -filter_saved.txt
 -site_media
    -css
    -images
    -scripts
       -search.js

In My script (search.js) ->I am going to create a script that can write content to file as json format:

function WriteJSONFile(str){
    var fh = fopen("json_data/filter_saved.txt", 3);//Open the file for writing
     // If the file has been successfully opened
    if(fh!=-1) {
        fwrite(fh, str); // Write the string to a file
        fclose(fh); // Close the file
    }
 }  

$(document).ready(function(){
    $("#save_filter").click(function(){
         var filter_saved = []
         var customer_type_selected = $('#id_customer_type :selected').text();
         var list_tag_selected = $("#tag_checked").val();
         var filter_name = $("#put_filter_name").val();
         filter_saved_JSON = {
                         "pk":autoincrement,
                         "customer_type": customer_type_selected,
                         "tag": list_tag_selected
                        };
          WriteJSONFile(filter_saved_JSON);

    });

});

My problems is

 var fh = fopen("json_data/filter_saved.txt", 3);//Open the file for writing
 Where "filter_saved.txt" Could I put into directory?

I tried to place in many directories in project (I am using ubuntu)

I got an error:

fopen is not defined
[Break on this error] var fh = fopen("json_data/filter_saved.txt", 3);//Open the file for writing\n

Could anyone help me ?

Thanks :)

Answer 1

What the hell are you trying to do? Javascript runs in the browser, on the client side. It has no filesystem hooks, and thank god for that. Why on earth would you think it could open and write to files on your server?

Answer 2

You cannot access the file system on the client side using javascript. If you are trying to write to a file on your sever (what it looks like your doing), then this needs to be in the sever side code (python in this case).