wtem/admin.py

   1 # -*- coding: utf-8 -*-
   2
   3 import os
   4
   5 from django.contrib import admin
   6 from django import forms
   7 from django.utils import simplejson
   8 from django.utils.safestring import mark_safe
   9 from django.core.urlresolvers import reverse
  10 from django.conf.urls import url, patterns
  11 from django.shortcuts import render
  12 from django.contrib.auth.models import User
  13 from django.http import HttpResponse
  14 from django.template.loader import render_to_string
  15 from .models import Submission, Assignment, Attachment, exercises
  16 from .middleware import get_current_request
  17
  18
  19 def get_user_exercises(user):
  20     try:
  21         assignment = Assignment.objects.get(user = user)
  22         return [e for e in exercises if e['id'] in assignment.exercises]
  23     except Assignment.DoesNotExist:
  24         return []
  25
  26
  27 readonly_fields = ('submitted_by', 'first_name', 'last_name', 'email', 'key', 'key_sent')
  28
  29 class AttachmentWidget(forms.Widget):
  30     def render(self, name, value, *args, **kwargs):
  31         if value:
  32             a_tag = '<a href="%s">%s</a>' % (value, value)
  33         else:
  34             a_tag = 'brak'
  35         return mark_safe(('<input type="hidden" name="%s" value="%s"/>' + a_tag) % (name, value))
  36
  37 class SubmissionFormBase(forms.ModelForm):
  38     class Meta:
  39         model = Submission
  40         exclude = ('answers', 'marks', 'contact', 'end_time') + readonly_fields
  41
  42
  43 def get_open_answer(answers, exercise):
  44     def get_option(options, id):
  45         for option in options:
  46             if option['id'] == int(id):
  47                 return option
  48
  49     exercise_id = str(exercise['id'])
  50     answer = answers[exercise_id]
  51     if exercise['type'] == 'open':
  52         if isinstance(answer, list):
  53             toret = ''
  54             for part in answer:
  55                 field = get_option(exercise['fields'], part['id'])
  56                 toret += '- %s:\n\n%s\n\n' % (field['caption'], part['text'])
  57         else:
  58             toret = answer
  59     if exercise['type'] == 'edumed_wybor':
  60         ok = set(map(str, exercise['answer'])) == set(map(str,answer['closed_part']))
  61         toret = u'Czesc testowa [%s]:\n' % ('poprawna' if ok else 'niepoprawna')
  62         if len(answer['closed_part']):
  63             for selected in answer['closed_part']:
  64                 option = get_option(exercise['options'], selected)
  65                 toret += '%s: %s\n' % (selected, option['text'])
  66         else:
  67             toret += u'<nie wybrano odpowiedzi>\n'
  68         toret += u'\nCzesc otwarta (%s):\n\n' % ' '.join(exercise['open_part'])
  69         toret += answer['open_part']
  70
  71     return toret
  72
  73
  74 def get_form(request, submission):
  75     fields = dict()
  76     if submission.answers:
  77         answers = simplejson.loads(submission.answers)
  78         user_exercises = get_user_exercises(request.user)
  79         for exercise in exercises:
  80             if exercise not in user_exercises:
  81                 continue
  82
  83             answer_field_name = 'exercise_%s' % exercise['id']
  84             mark_field_name = 'markof_%s_by_%s' % (exercise['id'], request.user.id)
  85             if exercise['type'] in ('open', 'file_upload') or exercise.get('open_part', None):
  86                 if exercise['type'] == 'file_upload':
  87                     try:
  88                         attachment = Attachment.objects.get(submission = submission, exercise_id = exercise['id'])
  89                     except Attachment.DoesNotExist:
  90                         attachment = None
  91                     widget = AttachmentWidget
  92                     initial = attachment.file.url if attachment else None
  93                 else:
  94                     widget = forms.Textarea(attrs={'readonly':True})
  95                     initial = get_open_answer(answers, exercise)
  96
  97                 fields[answer_field_name] = forms.CharField(
  98                         widget = widget,
  99                         initial = initial,
 100                         label = 'Rozwiązanie zadania %s' % exercise['id']
 101                 )
 102
 103                 fields[mark_field_name] = forms.ChoiceField(
 104                     choices = [(None, '-')] + [(i,i) for i in range(exercise['max_points']+1)],
 105                     initial = submission.get_mark(user_id = request.user.id, exercise_id = exercise['id']),
 106                     label = u'Twoja ocena zadania %s' % exercise['id']
 107                 )
 108
 109     if not request.user.is_superuser:
 110         class Meta(SubmissionFormBase.Meta):
 111             pass
 112         Meta.exclude += ('examiners',)
 113         fields['Meta'] = Meta
 114
 115     return type('SubmissionForm', (SubmissionFormBase,), fields)
 116
 117
 118 class SubmissionAdmin(admin.ModelAdmin):
 119     list_display = ('__unicode__', 'todo', 'examiners_repr')
 120     readonly_fields = readonly_fields
 121
 122     def get_form(self, request, obj, **kwargs):
 123         return get_form(request, obj)
 124
 125     def submitted_by(self, instance):
 126         if instance.contact:
 127             return '<a href="%s">%s</a>' % (
 128                 reverse('admin:contact_contact_change', args = [instance.contact.id]),
 129                 instance.contact.contact
 130             )
 131         return '-'
 132     submitted_by.allow_tags = True
 133     submitted_by.short_description = "Zgłoszony/a przez"
 134
 135     def todo(self, submission):
 136         user = get_current_request().user
 137         user_exercises = get_user_exercises(user)
 138         user_marks = submission.marks.get(str(user.id), {})
 139         return ','.join([str(e['id']) for e in user_exercises if str(e['id']) not in user_marks.keys()])
 140     todo.short_description = 'Twoje nieocenione zadania'
 141
 142     def examiners_repr(self, submission):
 143         return ', '.join([u.username for u in submission.examiners.all()])
 144     examiners_repr.short_description = 'Przypisani do zgłoszenia'
 145
 146     def save_model(self, request, submission, form, change):
 147         for name, value in form.cleaned_data.items():
 148             if name.startswith('markof_'):
 149                 parts = name.split('_')
 150                 exercise_id = parts[1]
 151                 user_id = parts[3]
 152                 submission.set_mark(user_id = user_id, exercise_id = exercise_id, mark = value)
 153         submission.save()
 154
 155     def changelist_view(self, request, extra_context=None):
 156         context = dict(examiners = [])
 157         assignments = Assignment.objects.all()
 158         if not request.user.is_superuser:
 159             assignments = assignments.filter(user = request.user)
 160         for assignment in assignments:
 161             examiner = dict(name = assignment.user.username, todo = 0)
 162             for submission in Submission.objects.filter(examiners = assignment.user):
 163                 for exercise_id in assignment.exercises:
 164                     if submission.get_mark(user_id = assignment.user.id, exercise_id = exercise_id) is None:
 165                         examiner['todo'] += 1
 166             context['examiners'].append(examiner)
 167         return super(SubmissionAdmin, self).changelist_view(request, extra_context = context)
 168
 169     def queryset(self, request):
 170         qs = super(SubmissionAdmin, self).queryset(request)
 171         if not request.user.is_superuser:
 172             qs = qs.filter(examiners = request.user)
 173         return qs
 174
 175     def get_urls(self):
 176         urls = super(SubmissionAdmin, self).get_urls()
 177         return patterns('',
 178             url(r'^report/$', self.admin_site.admin_view(report_view), name='wtem_admin_report')
 179         ) + super(SubmissionAdmin, self).get_urls()
 180
 181
 182 class SubmissionsSet:
 183     def __init__(self, submissions):
 184         self.submissions = submissions
 185         self.examiners_by_exercise = dict()
 186         for submission in submissions:
 187             for user_id, marks in submission.marks.items():
 188                 user = User.objects.get(pk=user_id)
 189                 for exercise_id in marks.keys():
 190                     examiners = self.examiners_by_exercise.setdefault(exercise_id, [])
 191                     if not user in examiners:
 192                         examiners.append(user)
 193
 194 def report_view(request):
 195     submissions = sorted(Submission.objects.all(), key = lambda s: -s.final_result)
 196     toret = render_to_string('wtem/admin_report.csv', dict(
 197         submissionsSet = SubmissionsSet(submissions),
 198         exercise_ids = map(str, range(1,len(exercises)+1))
 199     ))
 200     response = HttpResponse(toret, content_type = 'text/csv')
 201     response['Content-Disposition'] = 'attachment; filename="wyniki.csv"'
 202     return response
 203
 204 admin.site.register(Submission, SubmissionAdmin)
 205 admin.site.register(Assignment)