‘RelatedManager’ object is not iterable Django
Call all() to retrieve the elements from the manager. {% for area in world_areas.all %}
django-views
Django 2.0 path error ?: (2_0.W001) has a route that contains ‘(?P
The new path() syntax in Django 2.0 does not use regular expressions. You want something like: path(‘<int:album_id>/’, views.detail, name=”detail”), If you want to use a regular expression, you can use re_path(). re_path(r’^(?P<album_id>[0-9])/$’, views.detail, name=”detail”), The old url() still works and is now an alias to re_path, but it is likely to be deprecated in future. … Read more
How can I get the username of the logged-in user in Django?
You can use the request object to find the logged in user def my_view(request): username = None if request.user.is_authenticated(): username = request.user.username According to https://docs.djangoproject.com/en/2.0/releases/1.10/ In version Django 2.0 the syntax has changed to request.user.is_authenticated
How do I return JSON without using a template in Django?
I think the issue has gotten confused regarding what you want. I imagine you’re not actually trying to put the HTML in the JSON response, but rather want to alternatively return either HTML or JSON. First, you need to understand the core difference between the two. HTML is a presentational format. It deals more with … Read more
How to get primary keys of objects created using django bulk_create
2016 Since Django 1.10 – it’s now supported (on Postgres only) here is a link to the doc. >>> list_of_objects = Entry.objects.bulk_create([ … Entry(headline=”Django 2.0 Released”), … Entry(headline=”Django 2.1 Announced”), … Entry(headline=”Breaking: Django is awesome”) … ]) >>> list_of_objects[0].id 1 From the change log: Changed in Django 1.10: Support for setting primary keys on objects … Read more
How to handle request.GET with multiple variables for the same parameter in Django
You want the getlist() function of the GET object: request.GET.getlist(‘myvar’)
Can I call a view from within another view?
Sure, as long as when it’s all said and done your view returns an HttpResponse object. The following is completely valid: def view1(request): # do some stuff here return HttpResponse(“some html here”) def view2(request): return view1(request) If you don’t want to return the HttpResponse from the first view then just store it into some variable … Read more
Class Based Views VS Function Based Views
The single most significant advantage is inheritance. On a large project it’s likely that you will have lots of similar views. Rather than write the same code again and again, you can simply have your views inherit from a base view. Also django ships with a collection of generic view classes that can be used … Read more
django – get() returned more than one topic
get() returned more than one topic — it returned 2! The above error indicatess that you have more than one record in the DB related to the specific parameter you passed while querying using get() such as Model.objects.get(field_name=some_param) To avoid this kind of error in the future, you always need to do query as per … Read more
Django reverse lookup of foreign keys
You can use events = venue.event_set to go the other way. Note that venue.event_set is a manager object, like Event.objects, so you can call .all, .filter, .exclude and similar on it to get a queryset. See the Django documentation