By the way, in your marke.py, the "global" declaration doesn't do what you seem to think, and may be a syntax error. I know that in some other languages, "global" is used to make a variable available to all code. This is not the case in python. Without the "global" declaration, any piece of code can do:
import marke and then reference your variable as marke.marke . The top level variables of a module which has been imported can be referenced by the same "." syntax as is used to reference the attributes of classes and class instances. In python "global" is used inside of a function definition to allow the function (or method) to write to (set the value of) a variable in the global namespace (the top level of the module in almost all cases). The function can read from (use the current value of) a global (module top level) variable without using any special syntax. But while python is internalizing (compiling) the function definition, if it sees you setting a variable which you have not declared global within that function body, it makes a variable that is local to the function. If this variable has the same name as a global variable, the global variable is hidden from that function body. The global declaration tells python that you really do want to use the global variable, even if you are setting it. Bill On Thu, Feb 28, 2013 at 11:57 AM, Bill Freeman <[email protected]> wrote: > In the lines: > > > return render_to_response('polls/detail.html', {'poll': p}, > context_instance=RequestContext(request)) > > you have two choices. Both: > > return render_to_response('polls/detail.html', {'poll': p, 'marke': > marke}, > context_instance=RequestContext(request)) > > and > > > return render_to_response('polls/detail.html', {'poll': p}, > context_instance=RequestContext(request), > dict(marke=marke)) > > will work. Also, in both places you have the choice of the dictionary > literal syntax: {...} > or the type constructor syntax: dict(...) -- it's a matter of tast, so > long as the keys are > legal python identifiers. That is, the second example could also be > written as: > > > return render_to_response('polls/detail.html', {'poll': p}, > context_instance=RequestContext(request), > {'marke': marke}) > > The second argument of render_to_response is used to update the > context_instance, > or to initialize a new one if context_instance is not provided. > > As to where marke comes from, my suggestions were written from the point > of view > that your marke.py worked, and that you had done: > > import marke > > Higher in the file. Since I don't understand the purpose of marke (versus > a constant > string, or an attribute of an image field on one of your models, I can't > help you with > it. Perhaps you could better describe why this is a variable, and from > where its > contents are intended to come? > > Bill > > On Thu, Feb 28, 2013 at 11:30 AM, Maria <[email protected]> wrote: > >> Can you tell me where exactly to insert that Variable? >> >> >> def detail(request, poll_id): >>> p = get_object_or_404(Poll, pk=poll_id) >>> return render_to_response('polls/detail.html', {'poll': p}, >>> context_instance=RequestContext(request)) >>> >> >> Also, do I have to create a class "marke"? Because up until now I only >> have: >> >> >> from choice import* >>> >>> global marke >>> *marke* = read_m() >>> >>> >> This variable reads an image name. I want to use it for {{ marke }}.jpg >> >> >> >> >> On Thursday, February 28, 2013 12:06:02 PM UTC+1, Maria wrote: >> >>> Hello everyone, >>> >>> I have a variable I want to have access to in my Django template. But >>> somehow I can't manage to do that. >>> >>> I got *Django/mytemplates/polls/detail.html (template) *where I want to >>> insert an image: >>> >>> >>>> {% load staticfiles %} >>>> >>>> <html> >>>> <head> >>>> <link href="{% static "style.css" %}" rel="stylesheet" type="text/css" >>>> media="screen" /> >>>> </head> >>>> <body> >>>> <img src="{{ STATIC_URL }}images/{{ marke.marke }}.jpg" alt="Picture" >>>> /> >>>> >>>> >>> >>> >>> and >>> >>> *Django/mysite/polls/marke.py* : >>> >>> >>>> from choice import* >>>> >>>> global marke >>>> marke = read_m() >>>> >>> The value of marke is *marke3 *and I have an image marke3.jpg. I >>> successfully used another variable to insert an image (poll.id) but >>> this time it wont work. >>> The folder 'polls' is in my INSTALLED_APPS. >>> >>> What can I do? >>> >>> >>> >>> >>> >>> >> -- >> You received this message because you are subscribed to the Google Groups >> "Django users" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> To post to this group, send email to [email protected]. >> Visit this group at http://groups.google.com/group/django-users?hl=en. >> For more options, visit https://groups.google.com/groups/opt_out. >> >> >> > > -- You received this message because you are subscribed to the Google Groups "Django users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/django-users?hl=en. For more options, visit https://groups.google.com/groups/opt_out.
