0601

djangoProject2/movie/apps.py

@@ -4,4 +4,4 @@ from django.apps import AppConfig
 
 class MovieConfig(AppConfig):
     name = 'movie'
-    verbose_name='电影推荐系统'
+    verbose_name="电影推荐系统"

djangoProject2/movie/forms.py

@@ -5,15 +5,15 @@ from movie.model import User,Movie_rating
 class RegisterForm(forms.ModelForm):
     password_repeat=forms.CharField(max_length=256)
 
-    def get_erros(self):
-        erros=self.erros.get_json_data()
-        erros_lst=[]
-        for messages in erros.values():
-            for messages_dict in messages:
+    def get_errors(self):
+        errors=self.errors.get_json_data()
+        errors_lst=[]
+        for messages in errors.values():
+            for message_dict in messages:
                 for key,message in message_dict.items():
                     if key=='messasge':
-                        erros_lst.apppend(message)
-        return erros_lst
+                        errors_lst.append(message)
+        return errors_lst
 
 
     def clean(self):
@@ -37,12 +37,12 @@ class LoginForm(forms.ModelForm):
         model=User
         fields=['password']
 
-    def get_error(self):
+    def get_errors(self):
         errors=self.errors.get_json_data()
         errors_lst=[]
         for messages in errors.values():
-            for message_dict in messsages:
-                for key.message in message_dict.items():
+            for message_dict in messages:
+                for key,message in message_dict.items():
                     if key=='messasge':
                         errors_lst.append(message)
         return errors_lst

djangoProject2/movie/urls.py

@@ -5,11 +5,11 @@ from.import views
 app_name='movie'
 
 
-urlpattterns=[
+urlpatterns=[
     path('',views.IndexView.as_view(),name='index'),
     path('hot',views.PopularMovieView.as_view(),name='hot'),
     path('login',views.LoginView.as_view(),name='login'),
-    path('logout',views.UserLogout.as_view(),name='logout'),
+    path('logout',views.UserLogout,name='logout'),
     path('register',views.RegisterView.as_view(),name='register'),
     path('tag',views.TagView.as_view(),name='tag'),
     path('search',views.SearchView.as_view(),name='search'),

djangoProject2/movie/views.py

@@ -23,11 +23,11 @@ class IndexView(ListView):
 
 
     def get_queryset(self):
-        return Movie.object.filter(imdb_id__lte=1000)
+        return Movie.objects.filter(imdb_id__lte=1000)
 
 
     def get_context_data(self,*,object_list=None,**kwargs):
-        context=super(IndexView,self).get_context_data(*kwargs)
+        context=super(IndexView,self).get_context_data(**kwargs)
         paginator=context.get('paginator')
         page_obj=context.get('page_obj')
         pagination_data=self.get_pagination_data(paginator,page_obj)
@@ -82,7 +82,7 @@ class PopularMovieView(ListView):
 
 
     def get_context_data(self,*,object_list=None,**kwargs):
-        context=super(PopularMovieView,self).get_context_data(*kwargs)
+        context=super(PopularMovieView,self).get_context_data(**kwargs)
         paginator=context.get('paginator')
         page_obj=context.get('page_obj')
         pagination_data=self.get_pagination_data(paginator,page_obj)
@@ -132,8 +132,7 @@ class TagView(ListView):
             print(movies)
             return movies[:100]
     def get_context_data(self,*,object_list=None,**kwargs):
-
-        context=super(TagView,self).get_context_data(*kwargs)
+        context=super(TagView,self).get_context_data(**kwargs)
         if "genre" in self.request.GET.dict().keys():
             genre=self.request.GET.dict()['genre']
             context.update({'genre':genre})
@@ -177,7 +176,7 @@ class SearchView(ListView):
         movies=Movie.objects.filter(name__icontains=self.request.GET.dict()['keyword'])
         return movies
     def get_context_data(self,*,object_list=None,**kwargs):
-        context=super(SearchView,self).get_context_data(*kwargs)
+        context=super(SearchView,self).get_context_data(**kwargs)
         paginator=context.get('paginator')
         page_obj=context.get('page_obj')
         pagination_data=self.get_pagination_data(paginator,page_obj)
@@ -252,7 +251,7 @@ class LoginView(View):
             for error in errors:
                 messages.info(request,error)
             return redirect(reverse('movie:login'))
-class UserLogout(request):
+def UserLogout(request):
         request.session.set_expiry(-1)
         return redirect(reverse('movie:index'))
 
@@ -269,7 +268,7 @@ class MovieDetailView(DetailView):
             login=False
 
         pk=self.kwargs['pk']
-        movie=Movie.object.get(pk=pk)
+        movie=Movie.objects.get(pk=pk)
         if login:
             user=User.objects.get(pk=user_id)
             rating=Movie_rating.objects.filter(user=user,movie=movie).first()
@@ -291,8 +290,8 @@ class MovieDetailView(DetailView):
             comment=form.cleaned_data.get('comment')
             user_id=request.session['user_id']
             user=User.objects.get(pk=user_id)
-            movie=Movie.object.get(pk=pk)
-            rating=Movie_rating.object.filter(user=user,movie=movie).first()
+            movie=Movie.objects.get(pk=pk)
+            rating=Movie_rating.objects.filter(user=user,movie=movie).first()
             if rating:
                 rating.score=score
                 rating.comment=comment
@@ -327,7 +326,7 @@ def delete_recode(request,pk):
     messages.info(request,f'删除{movie.name}评分记录成功！')
     return redirect(reverse('movie:history',args=(user_id,)))
 
-class recommendMovieView(ListView):
+class RecommendMovieView(ListView):
     model=Movie
     template_name='movie/recommend.html'
     paginate_by=15
@@ -348,10 +347,56 @@ class recommendMovieView(ListView):
         other_users=User.objects.exclude(pk=cur_user_id)
         self.cur_user_movie_qs=Movie.objects.filter(user=cur_user)
         for user in other_users:
-            user_sim_dct[user.id]=len(Movie.object,filter(user=user)&self.cur_user_movie_qs)
+            user_sim_dct[user.id]=len(Movie.objects.filter(user=user)&self.cur_user_movie_qs)
         print("user similarity calculated!")
         return sorted(user_sim_dct.items(),key=lambda x:-x[1][:self.K])
     def get_recommend_movie(self,user_lst):
         movie_val_dct=dict()
-        for user,_in user_lst:
-            movie_set=Movie.objects.filter(user=user).exclude(id__in=self.cur_user_movie_qs).annotate(score=F('movie_rating__score')*F('movie_rating__score'))
+        for user in user_lst:
+            movie_set=Movie.objects.filter(user=user).exclude(id__in=self.cur_user_movie_qs).annotate(score=Movie('movie_rating__score')*Movie('movie_rating__score'))
+            for movie in movie_set:
+                movie_val_dct.setdefault(movie,0)
+                movie_val_dct[movie]+=movie.score
+        return sorted(movie_val_dct.items(),key=lambda x:-x[1])[:self.N]
+    def get_queryset(self):
+        s=time.time()
+        user_lst=self.get_user_sim()
+        movie_lst=self.get_recommend_movie(user_lst)
+        result_lst=[]
+        for movie, in movie_lst:
+            result_lst.append(movie)
+        e=time.time()
+        print(f"算法推荐用时:[e-s]秒")
+        return result_lst
+    def get_context_data(self,*,object_list=None,**kwargs):
+        context=super(RecommendMovieView,self).get_context_data(**kwargs)
+        print(context)
+        paginator=context.get('pagginator')
+        page_obj=context.get('page_obj')
+        pagination_data=self.get_pagination_data(paginator,page_obj)
+        context.update(pagination_data)
+        return context
+
+    def get_pagination_data(self,paginator,page_obj,around_count=2):
+        current_page=page_obj.number
+        if current_page<=around_count+2:
+            left_pages=range(1,current_page)
+            left_has_more=False
+        else:
+            left_pages=range(current_page-around_count,current_page)
+            left_has_more=True
+
+        if current_page>=paginator.num_pages-around_count-1:
+            right_pages=range(current_page+1,paginator.num_pages+1)
+            right_has_more=False
+        else:
+            right_pages=range(current_page+1,current_page+around_count+1)
+            right_has_more=True
+
+        return {
+                'left_pages':left_pages,
+                'right_pages':right_pages,
+                'current_page':current_page,
+                'left_has__more':left_has_more,
+                'right_has__more':right_has_more
+               }