On Aug 6, 2018, at 22:06, olliemignot@gmail.com wrote:
Hi Bryan,
Many thanks for your reply - I took your advice and used server_document and removed the pull_session:
@app.route("/")
def index():
get_id = request.args.get("ID")
ID = {'ID': str(get_id)}
print(ID)
bokeh_script = server_document(url='http://localhost:5006/data', arguments=ID)
return render_template('index.html', bokeh_script=bokeh_script)
In reply to your question, while I would be willing to help, I am a python hobbyist at best and my overall grasp of both Python and Bokeh is pretty sub-par - I would just make a fool of myself; an example being I don't really understand the difference between pull_session and server_document.
Thanks again,
Ollie
On Tuesday, 7 August 2018 01:01:32 UTC+10, Bryan Van de ven wrote:
Hi,
This probably needs to be clarified in the docs, or maybe better, made to raise an error. The code in the app script is executed when pull_session is called, so by the time you call server_session, it is simply too late. There's nothing that could be done about that.
There are two possibilities:
* If you only need to set this ID and not do any other configuration of the Bokeh document, you don't need to use pull_session at all. Just call server_session or server_document with the arguments parameter.
* Otherwise if you do need to use pull_session, you might be able to bake the request args into the URL, i.e. something like:
pull_session(url='http://localhost:5006/data?foo=bar'\)
If that does not work it will require an issue and investigation/work so see if it's possible to add.
It would be nice to make it clear (in docs and in code) that arguments cannot work when server_session is used with an existing session. Would you be interested in helping the project by working up a small PR to do that with some guidance?
Thanks,
Bryan
> On Aug 5, 2018, at 22:50, Ol1BoT <ollie...@gmail.com> wrote:
>
> Hi All,
>
> I have encountered a problem when trying to pass arguments from Flask into Bokeh Server.
>
> If I am running my Bokeh Server independently I can pass my arguments in no problem, as I can print out my arguments and all the graphs work correctly
>
> #data.py
> args = curdoc().session_context.request.arguments
> print('Arguments are: ', args)
>
> However when I add in my Flask application
> ..
>
> #app.py
> @app.route("/")
> def index():
> get_id = request.args.get("ID")
> ID = {'ID': get_id}
> print(ID)
> with pull_session(url='http://localhost:5006/data'\) as session:
> bokeh_script = server_session(session_id=session.id, url="http:/localhost:5006/data", arguments=ID)
> return render_template('index.html', bokeh_script=bokeh_script)
>
> and run the following
>
> >bokeh serve --allow-websocket-origin=localhost:5000 data.py --num-procs=1
>
> the page loads however data.py prints "Arguments are: {} " however I know my arguments are being accepted in Flask as ID is printing a dictionary successfully.
>
> Here is the documentation for server_session, it explicitly says that arguments bokeh.embed — Bokeh 3.3.2 Documentation
>
> Thanks in advance!
>
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