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问题 I have pagination, html: {% extends 'base.html' %} {% load pagination_tags %} {% block title %}NewsLine{% endblock title %} {% load humanize %} {% block content %} {% autopaginate news news_on_page %} {% paginate %} News on page: <input type="submit" value="10" /> <input type="submit" value="20" /> <input type="submit" value="50" /> <div class="container mt-3"> <div class="row my-5"> <div class="col-11"> <p>News overall {{ paginator.count }}</p> <p>Number of pages {{ paginator.num_pages }}</p

问题 For an app I am developing, I want to graph the results from a pedometer. The pedometer uses a service to measure the amount of steps someone makes in the background. I have a custom view called DrawView, in which I want to draw my results. I call the drawPoint method from my service whenever a step is measured. Then from my drawPoint method I try to call onDraw() using invalidate() . According to my logs, drawPoint is being called but onDraw() is not. So my question is: Why is onDraw() not

问题 I am a newbie, loading data ( data(iris) ) into R. Everything is fine but when I do View(iris) , the Species names in the table are shown in a different language. Wondering if there's a bug or something? Please see an example below. Some details that might be helpful in understanding the issue: R version 4.0.1 (2020-06-06) Platform: x86_64-w64-mingw32/x64 (64-bit) Running under: Windows 10 x64 (build 18362) locale: 1 LC_COLLATE=English_Australia.1252 LC_CTYPE=English_Australia.1252 LC

问题 I want to redirect to the post i actually created. So i have form, that added a post to the website, and after submit form i would like to redirect to this post. This is my urls urlpatterns = [ path('', views.home, name='home'), path('detail/<int:pk>/', views.detail, name='detail'), path('form/', views.formularz, name='formularz'),] and my views : def formularz(request): form = NewJobForm(request.POST) if form.is_valid(): firma = form.save(commit=False) firma.save() return redirect('search

问题 I have two custom UIViews on the screen. UIViewOne occupies 75% of the screen, and UIViewTwo 25%. I need to click on UIViewTwo, resize it to make the second bigger and smaller first. I also know that this needs to be done using constraints, but I don't know how. Please tell me how to solve this problem. 回答1: One approach is to add two Height constraints to view1 and change their Priority , add a Height constraint at 75% ( multiplier = 0.75 ) set its Priority to 999 add a Height constraint at

问题 When I am in a situation where I need pass a significant size of data to a child component, it seems the easiest way to do this is to store it in state and then pass it to children as props inside the render function. I am wondering if there is a less-intensive way to do this. For instance, if I have a relationship like so: <PhotosPage> <PhotoFeed/> </PhotosPage> I know that I want to fetch the 'photo feed' data when the PhotosPage mounts. Let's say I fetch this data in PhotoPage 's

问题 I was wondering if there is any way that I can use a decorator just for some methods from my class, for example in the following code I want token_required to decorate all methods excepting the POST, how could I possibly achieve that? class UserAPI(MethodView): def token_required(view_method): @wraps(view_method) def decorated(*args, **kwargs): token = None if 'token' in request.headers: token = request.headers['token'] if not token: return "no token" return view_method(*args, **kwargs)

问题 It's a simple question. I've organised my models so that most objects served to the page are of one type - Item. The model contains various attributes which help me serve it in different ways. I have articles, and videos, which are determined by a 'type' field on the model. Type = 'article' etc. I have a listview, which shows all the objects in the Item model, sorted by date. class ItemListView(generic.ListView): # This handles the logic for the UserForm and ProfileForm - without it, nothing

问题 It's a simple question. I've organised my models so that most objects served to the page are of one type - Item. The model contains various attributes which help me serve it in different ways. I have articles, and videos, which are determined by a 'type' field on the model. Type = 'article' etc. I have a listview, which shows all the objects in the Item model, sorted by date. class ItemListView(generic.ListView): # This handles the logic for the UserForm and ProfileForm - without it, nothing

问题 I have been trying many solutions out there for preventing the soft keyboard from pushing my layout when it appears. However, all solutions did not work. Simply, I want everything in my layout (buttons, imageViews, Background, textViews, textEdits) to stay in place when soft keyboard is shown. I do not care about what it will cover. I tried all of the following and all produced the same output and do not work: (did not work) I tried writing android:windowSoftInputMode="adjustNothing" in my