Django: passing JSON from view to template

Question

In views.py, I have time series data stored in a dictionary as follows:

time_series = {\"timestamp1\": occurrences, \"timestamp2\": occurrences}         


        

Answer 1

If a frontend library needs a to parse JSON, you can use the json library to convert a python dict to a JSON valid string. Use the escapejs filter

import json

def foo(request):
    json_string = json.dumps(<time_series>)
    render(request, "foo.html", {'time_series_json_string': json_string})


<script>
    var jsonObject = JSON.parse('{{ time_series_json_string | escapejs }}');
</script>

Answer 2

have you tried passing something like json.dumps(time_series) to the render function?

Answer 3

Pass a json.dumps value to the template. It is already a valid JSON string so you don't need to parse it or anything. Only when rendering it in the template, mark it as safe to prevent HTML quoting.

# views.py
def foo(request):
    time_series_json = json.dumps(time_series)
    return render(request, 
                  "template.html", 
                  context={'time_series': time_series_json})

# in the template
<script>
    const timeSeries = {{ time_series | safe }};
</script>