jinja2.exceptions.UndefinedError: list object has no element Undefined

Question

I'm not good in javascript. I have google charts with data. And I need to add data to charts via loop in javascript:

for (let i = 0; i < 3; i++) {
    data.addRow(
        ['{{list[i][0]}}',
        { v: {{list[i][1][0]}}, f: '{{list[i][1][1]}}' }]
        );
}

What did contain a list:

list = ['Car', [2:30, '2:30'], '1:00']

But it wrote me an error:

UndefinedError

jinja2.exceptions.UndefinedError: list object has no element Undefined

Can you advice me please, what I can do with it?

Answer 1

I'm not too familiar with the Google Charts API, but from the looks of it, you have a syntax error since you're literally passing the string '{{list[i][0]}}' to the data.addrow() method.

Try this instead and let me know if it works:

for (let i = 0; i < 3; i++) {
  data.addRow([
    list[i][0],
    {
      v: list[i][1][0],
      f: list[i][1][1]
    }
  ]);
}