django的templates和url，views之间的关系怎么弄

Question

django的templates和url，views之间的关系怎么弄

Answer 1

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from django.core.urlresolvers import reverse_lazy from django.shortcuts import redirect, get_object_or_404 from django.forms.models import modelform_factory from django.apps import apps from django.views.generic.base import TemplateResponseMixin, View from django.views.generic.list import ListView from django.views.generic.edit import CreateView, UpdateView, DeleteView from braces.views import LoginRequiredMixin, PermissionRequiredMixin from braces.views import CsrfExemptMixin, JsonRequestResponseMixin from .models import Course, Module, Content from .forms import ModuleFormSet from django.db.models import Count from .models import Subject from django.views.generic.detail import DetailView from students.forms import CourseEnrollForm # Create your views here.     class OwnerMixin(object):     def get_queryset(self):         qs = super(OwnerMixin, self).get_queryset()         return qs.filter(owner=self.request.user)     class OwnerEditMixin(object):     def form_valid(self, form):         form.instance.owner = self.request.user         return super(OwnerEditMixin, self).form_valid(form)     class OwnerCourseMixin(OwnerMixin, LoginRequiredMixin):     model = Course     fields = ['subject', 'title', 'slug', 'overview']     success_url = reverse_lazy('manage_course_list')     class OwnerCourseEditMinxin(OwnerCourseMixin, OwnerEditMixin):     fields = ['subject', 'title', 'slug', 'overview']     success_url = reverse_lazy('manage_course_list')     template_name = 'courses/manage/course/form.html'     class ManageCourseListView(OwnerCourseMixin, ListView):       template_name = 'courses/manage/course/list.html'     class CourseCreateView(PermissionRequiredMixin,                        OwnerCourseEditMinxin,                        CreateView):     permission_required = 'courses.add_course'     class CourseUpdateView(PermissionRequiredMixin,                        OwnerCourseEditMinxin,                        UpdateView):     permission_required = 'courses.change_course'     class CourseDeleteView(PermissionRequiredMixin,                        OwnerCourseMixin,                        DeleteView):     template_name = 'courses/manage/course/delete.html'     success_url = reverse_lazy('manage_course_list')     permission_required = 'courses.delete_course'     class CourseModuleUpdateView(TemplateResponseMixin, View):     template_name = 'courses/manage/module/formset.html'     course = None       def get_formset(self, data=None):         return ModuleFormSet(instance=self.course,                              data=data)       def dispatch(self, request, pk):         self.course = get_object_or_404(Course, id=pk, owner=request.user)         return super(CourseModuleUpdateView, self).dispatch(request, pk)       def get(self, request, *args, **kwargs):         formset = self.get_formset()         return self.render_to_response({'course': self.course,                                         'formset': formset})       def post(self, request, *args, **kwargs):         formset = self.get_formset(data=request.POST)         if formset.is_valid():             formset.save()             return redirect('manage_course_list')         return self.render_to_response({'course': self.course,                                         'formset': formset})     class ContentCreateUpdateView(TemplateResponseMixin, View):     module = None     model = None     obj = None     template_name = 'courses/manage/content/form.html'       def get_model(self, model_name):         if model_name in ['text', 'video', 'image', 'file']:             return apps.get_model(app_label='courses',                                   model_name=model_name)         return None       def get_form(self, model, *args, **kwargs):         Form = modelform_factory(model, exclude=['owner',                                                  'order',                                                  'created',                                                  'updated'])         return Form(*args, **kwargs)       def dispatch(self, request, module_id, model_name, id=None):         self.module = get_object_or_404(Module,                                         id=module_id,                                         course__owner=request.user)         self.model = self.get_model(model_name)         if id:             self.obj = get_object_or_404(self.model, id=id, owner=request.user)         return super(ContentCreateUpdateView, self).dispatch(request, module_id, model_name, id)       def get(self, request, module_id, model_name, id=None):         form = self.get_form(self.model, instance=self.obj)         return self.render_to_response({'form': form, 'object': self.obj})       def post(self, request, module_id, model_name, id=None):         form = self.get_form(self.model,                              instance=self.obj,                              data=request.POST,                              files=request.FILES)         if form.is_valid():               obj = form.save(commit=False)             obj.owner = request.user             obj.save()             print id, '&&&&&&&&&&&'             if not id:                 print '****************'                 Content.objects.create(module=self.module,                                        item=obj)                 print '****************'             return redirect('module_content_list', self.module.id)         return self.render_to_response({'form': form, 'object': self.obj})     class ContentDeleteView(View):     def post(self, request, id):         content = get_object_or_404(Content,                                     id=id,                                     module__course__owner=request.user)         module = content.module         content.item.delete()         content.delete()         return redirect('module_content_list', module.id)     class ModuleContentListView(TemplateResponseMixin, View):     template_name = 'courses/manage/module/content_list.html'       def get(self, request, module_id):         module = get_object_or_404(Module,                                    id=module_id,                                    course__owner=request.user)         return self.render_to_response({'module': module})     class ModuleOrderView(CsrfExemptMixin,                       JsonRequestResponseMixin,                       View):     def post(self, request):         for id, order in self.request_json.items():             Module.objects.filter(id=id,                                   course__owner=request.user).update(order=order)         return self.render_json_response({'saved': 'OK'})     class ContentOrderView(CsrfExemptMixin,                        JsonRequestResponseMixin,                        View):     def post(self, request):         for id, order in self.request_json.items():             Content.objects.filter(id=id,                                    module__course__owner=request.user)\                 .update(order=order)         return self.render_json_response({'saved': 'OK'})     class CourseListView(TemplateResponseMixin, View):     model = Course     template_name = 'courses/course/list.html'       def get(self, request, subject=None):         subjects = Subject.objects.annotate(             total_courses=Count('courses')         )         courses = Course.objects.annotate(             total_modules=Count('modules')         )         if subject:             subject = get_object_or_404(Subject, slug=subject)             courses = courses.filter(subject=subject)         print '***********', subjects, courses, subject         return self.render_to_response({'subjets': subjects,                                         'subject': subject,                                         'courses': courses})     class CourseDetailView(DetailView):     model = Course     template_name = 'courses/course/detail.html'       def get_context_data(self, **kwargs):         context = super(CourseDetailView,                         self).get_context_data(**kwargs)         context['enroll_form'] = CourseEnrollForm(             initial={'course': self.object})         return context