How to generate specific json with jqwidgets and angular? - json

Question

I'm trying to export the data of my datatable into a json file.
The table is create with JQwidget on Angular6 and the data come from an API.
But, with the jqwidgets method exportData('json');, only can make a format of a json of the table.
[{"id":"1","name":"test"},
{"id":"2","name":"toto"}]
jsonExport(): void {
this.myDataTable.exportData('json');
};
I don't know how to change the format of the json to have something like that:
["number":"2",
"1":{"id":"1","name":"test"},
"2":{"id":"2","name":"toto"}]
Thanks

Answer 1

I manage to do what I wanted, it goes like that:
First, You can't do it with JqWidgets https://www.jqwidgets.com/community/topic/how-to-generate-specific-json-with-exportdatajson-jqwidgets-and-angular/
Then, my solution is:
I created the String inside my Nodejs API as a GET.
app.get('jsonfile', function (req, res) {
res.header("Content-Disposition", "attachment;filename=\filename.txt\"");
connection.query('select * from heroes', function(error, results, fields) {
if (error) throw error;
var JSONstring = "[";
...
...
...
JSONstring = "]";
res.end(JSONstring);
console.log(JSONstring);
});
});
res.header('Content-Disposition', 'attachment;filename=\filename.txt\""); is mandatory for my solutio if you want to make this JSON string downloalable as a file.
I tried to use this end-point just like the others but I had this problem :
ERROR
Object { headers: {…}, status: 200, statusText: "OK", url: "http://localhost:3000/jsonfile", ok: false, name: "HttpErrorResponse", message: "Http failure during parsing for http://localhost:3000/jsonfile", error: {…} }
Because it was not working with a button click and ts function.
Instead I just made this:
<a href="http://localhost:3000/jsonfile" ><button>Creation JSON File</button></a>
It works for me, but if there are better solutions, I will be glad to know.
Thanks all for your help!