Thank you Michael this did indeed fix it.
Works a charm now, cheers.
This does already works for me though - not sure how? Perhaps the json
renderer parses the string returned by subprocess?
Or jinja2 deparses it twice? In the previous example I noticed that merely
putting {{r}} on a page dumped the entire "json" string with the quotes
marked up to unicode before the change you suggested.
@view_config(route_name='rachel_content', renderer='json')
def rachel_content(request):
return {'rachel': subprocess.check_output(
'program_that_accepts_and_returns_json',json.dumps(request.json_body)])
}
On Wednesday, February 14, 2018 at 12:39:34 AM UTC+11, Michael Merickel
wrote:
>
> 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 <[email protected]
> <javascript:>> 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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