passing variables in django forms

Question

I'm writing my first django app and I'm in trouble. This is my sitiuation:

I split a track in diferent ways and I need to show every one in an html page with a form. The user must fill the form about this part of the track and then I need to show the next way with the form again until it finishes. I don't know how to do that loop, but I've tried with this and my problem is that I don't know how to pass de variables that I need from the GET situation to the POST.

def acoplar_track(request, track_id, ):            
    if request.method=='POST':
        formulari = WayForm(request.POST, request.FILES)
        if formulari.is_valid():   
            x.addFeatures(newWays_l[cont], formulari.descripcio, formulari.tipus)    
            x.saveCityToFile('/var/www/tottrack/media/zones/city/'+track.zona.nom)                  

            if cont+1==len(newWays_l):
                return render_to_response('principal/inici.html', context_instance=RequestContext(request))
            else:
                cont = cont+1          
                formulari = WayForm()
                lon, lat, zoom = x.getWayMapSettings(newWays_l[cont]) #variables to show the map

                return render(request,'principal/wayForm.html',
                {'formulari':formulari, 'lat':lat, 'lon':lon, 'zoom':zoom})


    else:
        track = get_object_or_404(Track, id=track_id) # obte el track i la zona corresponent al track   

        x=Xarxa('/var/www/tottrack/media/zones/city/'+track.zona.nom) # crea una Track() mitjansant el fitxer on s'ha guardat la zona per poder acoplar-hi les noves dades
        nomTrack = track.track.name.split('/')[-1:] # aconsegueix nomes el nom del fitxer, sense /tracks/gpx/
        x.setZoneBB(track.zona.latSud, track.zona.lonOest, track.zona.latNord, track.zona.lonEst)
        x.uploadTrack(nomTrack[0]) # fusiona el track a la city
        newWays_l = x.getTrackWays() # obte les ids dels nous camins que s'afegiran

        if not newWays_l:
            return render_to_response('acoplarTrackRepetit.html')
        else: 
            cont = 0           
            formulari = WayForm()
            lon, lat, zoom = x.getWayMapSettings(newWays_l[0]) #variables to show the map

            return render(request,'principal/wayForm.html',
            {'formulari':formulari, 'lat':lat, 'lon':lon, 'zoom':zoom})

forms.py

CHOICES = (('1','Pista',),('2','Corriol',))             
class WayForm(forms.Form):
    descripcio = forms.Textarea()
    tipus = forms.ChoiceField(widget=forms.RadioSelect, choices=CHOICES)

Thanks for your help!

Iradiel90 · Accepted Answer · 2013-06-13 14:46:21Z

1

Just try put the code of the GET method before the if request.method == POST. Something like this:

def acoplar_track(request, track_id, ):

//Code for GET here

if request.method == POST:

    //Code for POST here

//return render GET method

answered Jun 13, 2013 at 14:46

Iradiel90

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2 Comments

user2170928 Over a year ago

It doesn't works. I can execute it but when it proces the first form I have the error that the variables aren't initialized...

Iradiel90 Over a year ago

just initialize the variable in the part of the GET code. formulari = WayForm()

Brenda J. Butler · Accepted Answer · 2013-06-14 03:41:19Z

0

Let me rephrase your question, to make sure I understand:

You want to collect some information over several pages/forms, before saving a model.

This is covered in the documentation here:

https://docs.djangoproject.com/en/1.5/ref/contrib/formtools/form-wizard/

Basically, the information collected in earlier pages is actually saved in the database but in a different place, until you have all the info needed to save the model in which you're interested. Then you can save the model and delete all the cached responses.

answered Jun 14, 2013 at 3:41

Brenda J. Butler

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