Craig,
The subprocess is returning a json-encoded string. This is a string. You
must parse it first via json.loads(subprocess.check_output(...)) if you
want to use the objects it contains in your template. Similarly you said
it's working with renderer="json" but it's actually not. You're
json-encoding a json-encoded string. You'll see if you try to use that
response that it is double encoded and you will need to double-decode it.
You'll want to use the same solution in that case via json.loads() or you
can just pass through the check_output content as the response body by
making a response yourself instead of using the renderer.
- Michael
On Tue, Feb 13, 2018 at 6:03 AM, Craig Burton <
craig.alexander.bur...@gmail.com> wrote:
> Hi there, if you can help me with this it will save what's left of my hair.
>
> I want to have a jinja2 template render with variables passed in from an
> external program. The views.py has this in it
>
> @view_config(route_name='stats', renderer='templates/stats.jinja2')
> def my_view_stats(request):
> return {'r': subprocess.check_output(['program_that_returns_json']),
> 'page': 'My Stats', 'next' : '/hello', 'prev': '/paydown'}
>
> program_that_returns_json returns this kind of thing {'on_target' : 3425}
>
> The template stats.jinja2 has
> We are this much on target: {{r.on_target}}
> ...
> The next page is {{next}}
>
> {{next}} gets rendered but {{r.on_target}} does not.
>
> The technique above works for me when renderer='json' but I need
> javascript to unpack the response and jquery to set content, variable by
> variable. Here I have a large list of them. Can it work like I have
> guessed or ?
> Cheers
> Craig.
>
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