87 lines
3 KiB
Python
87 lines
3 KiB
Python
from django.contrib import admin, messages
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from django.http import HttpResponse
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from django.db.models import F
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from django.utils.translation import ngettext
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import io
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import zipfile
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from housewars.utils import load_pdf
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from housewars.models import Teacher, UserEntry
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@admin.register(Teacher)
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class TeacherAdmin(admin.ModelAdmin):
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fieldsets = [
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('Personal Information', {'fields': [
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'first_name', 'last_name']}),
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('House Wars Information', {
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'fields': ['grade', 'house', 'activity']}),
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]
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list_display = ('first_name', 'last_name', 'house', 'grade', 'activity')
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actions = ['export_mentor_to_pdf']
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@admin.action(description='Remove activity from selected teachers')
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def remove_activity(self, request, queryset):
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queryset.update(activity=None)
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self.message_user(request, ngettext(
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'Removed activity for %d teacher.',
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'Removed activities for %d teachers.',
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queryset.count(),
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) % queryset.count(), messages.SUCCESS)
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@admin.action(description='Remove house from selected teachers')
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def remove_activity(self, request, queryset):
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queryset.update(house=None)
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self.message_user(request, ngettext(
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'Removed house for %d teacher.',
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'Removed houses for %d teachers.',
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queryset.count(),
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) % queryset.count(), messages.SUCCESS)
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@admin.action(description='Remove grade from selected teachers')
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def remove_activity(self, request, queryset):
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queryset.update(grade=None)
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self.message_user(request, ngettext(
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'Removed grade for %d teacher.',
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'Removed grades for %d teachers.',
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queryset.count(),
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) % queryset.count(), messages.SUCCESS)
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@admin.action(description='Export mentor to pdf')
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def export_mentor_to_pdf(self, request, queryset):
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file_list = {}
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for teacher in queryset:
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user_entries = UserEntry.objects.filter(
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grade=teacher.grade, house=teacher.house)
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# Augment the queryset with extra data
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user_entries = user_entries.annotate(
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a1_room=F('activity1__room_number')).annotate(a2_room=F('activity2__room_number'))
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# Select headers that are to be unpacked
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headers = ['first_name', 'last_name', 'grade', 'house',
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'activity1', 'a1_room', 'activity2', 'a2_room']
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file = load_pdf(user_entries, headers,
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f"{teacher.last_name}, {teacher.first_name}")
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file_list[f"{teacher.last_name}, {teacher.first_name}"] = file
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outfile = io.BytesIO()
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with zipfile.ZipFile(outfile, 'w') as zf:
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for name, file in file_list.items():
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zf.writestr(f"{name}.pdf", file.getvalue())
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outfile = outfile.getvalue()
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response = HttpResponse(
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outfile, content_type='application/octet-stream')
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response['Content-Disposition'] = 'attachment; filename=mentor.zip'
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return response
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