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') + 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         for selected in answer['closed_part']:
  63             option = get_option(exercise['options'], selected)
  64             toret += '%s: %s\n' % (selected, option['text'])
  65         else:
  66             toret += u'<nie wybrano odpowiedzi>\n'
  67         toret += u'\nCzesc otwarta (%s):\n\n' % ' '.join(exercise['open_part'])
  68         toret += answer['open_part']
  69
  70     return toret
  71
  72
  73 def get_form(request, submission):
  74     fields = dict()
  75     if submission.answers:
  76         answers = simplejson.loads(submission.answers)
  77         user_exercises = get_user_exercises(request.user)
  78         for exercise in exercises:
  79             if exercise not in user_exercises:
  80                 continue
  81
  82             answer_field_name = 'exercise_%s' % exercise['id']
  83             mark_field_name = 'markof_%s_by_%s' % (exercise['id'], request.user.id)
  84             if exercise['type'] in ('open', 'file_upload') or exercise.get('open_part', None):
  85                 if exercise['type'] == 'file_upload':
  86                     try:
  87                         attachment = Attachment.objects.get(submission = submission, exercise_id = exercise['id'])
  88                     except Attachment.DoesNotExist:
  89                         attachment = None
  90                     widget = AttachmentWidget
  91                     initial = attachment.file.url if attachment else None
  92                 else:
  93                     widget = forms.Textarea(attrs={'readonly':True})
  94                     initial = get_open_answer(answers, exercise)
  95
  96                 fields[answer_field_name] = forms.CharField(
  97                         widget = widget,
  98                         initial = initial,
  99                         label = 'Rozwiązanie zadania %s' % exercise['id']
 100                 )
 101
 102                 fields[mark_field_name] = forms.ChoiceField(
 103                     choices = [(None, '-')] + [(i,i) for i in range(exercise['max_points']+1)],
 104                     initial = submission.get_mark(user_id = request.user.id, exercise_id = exercise['id']),
 105                     label = u'Twoja ocena zadania %s' % exercise['id']
 106                 )
 107
 108     if not request.user.is_superuser:
 109         class Meta(SubmissionFormBase.Meta):
 110             pass
 111         Meta.exclude += ('examiners',)
 112         fields['Meta'] = Meta
 113
 114     return type('SubmissionForm', (SubmissionFormBase,), fields)
 115
 116
 117 class SubmissionAdmin(admin.ModelAdmin):
 118     list_display = ('__unicode__', 'todo', 'examiners_repr')
 119     readonly_fields = readonly_fields
 120
 121     def get_form(self, request, obj, **kwargs):
 122         return get_form(request, obj)
 123
 124     def submitted_by(self, instance):
 125         if instance.contact:
 126             return '<a href="%s">%s</a>' % (
 127                 reverse('admin:contact_contact_change', args = [instance.contact.id]),
 128                 instance.contact.contact
 129             )
 130         return '-'
 131     submitted_by.allow_tags = True
 132     submitted_by.short_description = "Zgłoszony/a przez"
 133
 134     def todo(self, submission):
 135         user = get_current_request().user
 136         user_exercises = get_user_exercises(user)
 137         user_marks = submission.marks.get(str(user.id), {})
 138         return ','.join([str(e['id']) for e in user_exercises if str(e['id']) not in user_marks.keys()])
 139     todo.short_description = 'Twoje nieocenione zadania'
 140
 141     def examiners_repr(self, submission):
 142         return ', '.join([u.username for u in submission.examiners.all()])
 143     examiners_repr.short_description = 'Przypisani do zgłoszenia'
 144
 145     def save_model(self, request, submission, form, change):
 146         for name, value in form.cleaned_data.items():
 147             if name.startswith('markof_'):
 148                 parts = name.split('_')
 149                 exercise_id = parts[1]
 150                 user_id = parts[3]
 151                 submission.set_mark(user_id = user_id, exercise_id = exercise_id, mark = value)
 152         submission.save()
 153
 154     def changelist_view(self, request, extra_context=None):
 155         context = dict(examiners = [])
 156         assignments = Assignment.objects.all()
 157         if not request.user.is_superuser:
 158             assignments = assignments.filter(user = request.user)
 159         for assignment in assignments:
 160             examiner = dict(name = assignment.user.username, todo = 0)
 161             for submission in Submission.objects.filter(examiners = assignment.user):
 162                 for exercise_id in assignment.exercises:
 163                     if submission.get_mark(user_id = assignment.user.id, exercise_id = exercise_id) is None:
 164                         examiner['todo'] += 1
 165             context['examiners'].append(examiner)
 166         return super(SubmissionAdmin, self).changelist_view(request, extra_context = context)
 167
 168     def queryset(self, request):
 169         qs = super(SubmissionAdmin, self).queryset(request)
 170         if not request.user.is_superuser:
 171             qs = qs.filter(examiners = request.user)
 172         return qs
 173
 174     def get_urls(self):
 175         urls = super(SubmissionAdmin, self).get_urls()
 176         return patterns('',
 177             url(r'^report/$', self.admin_site.admin_view(report_view), name='wtem_admin_report')
 178         ) + super(SubmissionAdmin, self).get_urls()
 179
 180
 181 class SubmissionsSet:
 182     def __init__(self, submissions):
 183         self.submissions = submissions
 184         self.examiners_by_exercise = dict()
 185         for submission in submissions:
 186             for user_id, marks in submission.marks.items():
 187                 user = User.objects.get(pk=user_id)
 188                 for exercise_id in marks.keys():
 189                     examiners = self.examiners_by_exercise.setdefault(exercise_id, [])
 190                     if not user in examiners:
 191                         examiners.append(user)
 192
 193 def report_view(request):
 194     submissions = sorted(Submission.objects.all(), key = lambda s: -s.final_result)
 195     toret = render_to_string('wtem/admin_report.csv', dict(
 196         submissionsSet = SubmissionsSet(submissions),
 197         exercise_ids = map(str, range(1,len(exercises)+1))
 198     ))
 199     response = HttpResponse(toret, content_type = 'text/csv')
 200     response['Content-Disposition'] = 'attachment; filename="wyniki.csv"'
 201     return response
 202
 203 admin.site.register(Submission, SubmissionAdmin)
 204 admin.site.register(Assignment)