How to implement a python script in a Django web app using parameters from a view

Question

My question about implementing a script into a view in a django web app.

I have a .py script that I want to run inside this django web app using the user-supplied data, the configfile, the modelfile and the choice as command line arguments. The output is then a list with different scores which will then be displayed inside the html (not the part I need help with yet).

So I have 2 forms, one that uploads a ML model and another one (the one I need help with) that uses user-supplied data to run a uploaded model:

 class Meta: model = MlModel fields = [ 'modelname', 'configfile', 'modelfile', 'choice', ] class TestForm(forms.Form): testdata = forms.FileField() model = forms.ModelChoiceField(queryset=MlModel.objects.all())

My views are as follow, where the test view is where the testing happens:

 if request.method == 'POST': form = UploadForm(request.POST, request.FILES) if form.is_valid(): form.save() return HttpResponseRedirect('/mltesting/') else: form = UploadForm() context = {'form':form} return render(request,'mltesting/upload.html', context=context) def test_model(request): submitbutton = request.POST.get("submit") testdata = '' modfile = '' confile = '' choice = '' form = TestForm(request.POST, request.FILES) if form.is_valid(): testdata = request.FILES['testdata'] model = form.cleaned_data.get('model') model = MlModel.objects.get(modelname=model) modfile = model.modelfile.path confile = model.configfile.path choice = model.choice else: form = TestForm() context = {'form': form, 'testdata': testdata, 'submitbutton': submitbutton, 'modelfile':modfile, 'configfile': confile,'choice': choice} return render(request,'mltesting/test.html', context=context)

And this is the HTML template where the output of the testing is supposed to be:

 {% block content %} <p>Compound Protein Interaction Tool</p> <form action="" method="POST" enctype="multipart/form-data"> {% csrf_token %} {{ form.as_table }} <input type="Submit" name="submit" value="Submit"/> </form> {% if submitbutton == "Submit" %} {% endif %} {% endblock %}

I am fairly new to Django in general so I apologise for the (probable) bad formulation of my question, but all help is greatly appreciated.

Rafael Arias · Accepted Answer · 2020-06-02 13:28:02Z

You can follow the answer from this solution

Make a folder in the same directory, add the py file there and then import the module you want in the view.py.

call the function as you would call any custom module.

** EDIT ** Call the script as stated in this answer

def test_model(request): if form.is_valid(): testdata = request.FILES['testdata'] model = form.cleaned_data.get('model') model = MlModel.objects.get(modelname=model) modfile = model.modelfile.path confile = model.configfile.path choice = model.choice else: form = TestForm() ######################################### ###########Here you run your script ###########Any variable from the script will be loaded here exec(open("./path/toYour/script.py").read(), globals()) #Add the information you want from the script to the context context = {'someVariableFromTheScript':someVariableFromTheScript, 'form': form, 'testdata': testdata, 'submitbutton': submitbutton, 'modelfile':modfile, 'configfile': confile,'choice': choice} return render(request,'mltesting/test.html', context=context)

Thanks for the help, however the script I want to run is a script that takes command line argument which I would run as follows: python3 script.py --modelfile ... --configfile ... --choice ... So it's not a module I want to import.
Then check this answer, I think this is what you want. stackoverflow.com/questions/1027714/…
and how do you implement this feature in the django context? Where is the script that I want to run saved? Do I save this in the static folder (where my css files are) or is this somewhere else?
Follow this answer: stackoverflow.com/a/31566843/8900853 If you run your "script.py", python will load the globals (the variables used in the your script) to the current function beeing run, like the "test_model" you have there. There you can access it and added to the context and return it to the HTML and render it.

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