CODEWITHSUNDEEP
djangoforms
ted
ted

Reputation: 14734

How to reach url from form in django

I am new to Django and I have a simple question. Here is a view : 

def watchmovie(request, idmovie): 
[...]         
return render(request, 'movies/watch_movie.html', locals())`

and I would like to create a simple form :

an IntegerField that would redirect to the correct url : if I submit "42" it will redirect me to the view watchmovie with the parameter 42 as idmovie.

How can I do that?

I tried something like that

<form action="{% url "movies.views.watchmovie" %}" method="post">
    {% csrf_token %}
    {{ form.as_p }}
    <input type="submit" value="Submit" />
</form>

my url.py is 

from django.conf.urls import patterns, url

    urlpatterns = patterns(
        'movies.views',
        url(r'^movie/(?P<idmovie>\d+)$', 'watchmovie'),
    )

and Django says

Reverse for 'movies.views.watchmovie' with arguments '()' and keyword arguments '{}' not found. 1 pattern(s) tried: ['movies/movie/(?P<idmovie>\\d+)$']

Thank you!

Upvotes: 0

Views: 72

Answers (1)

little_birdie
little_birdie

Reputation: 5857

The reason you are getting that error is because of a mistake in your url tag usage. Your watchmovie view url definition expects an argument to be supplied for idmovie. Since you are not supplying any argument in your url tag call, it looks only for urls which do not require an argument. Since there is none, you get an error.

But that is just a symptom. The real issue is that the way you have this structured there is no view listening for a post from your form.

The easier way to structure this is to use the same view to both display the form and to play the movie. If your view is hit with a GET request, display the form. If it is hit with a POST, validate the form (which will contain the movie id) and then respond with the page that plays the movie. That way there is no need to pass idmovie within your url.. you can remove that from your url definition and also remove the need to specify the action= attribute in your tag.. it will just post right back to where it came from.

Upvotes: 1

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