wtem/admin.py

   1 # -*- coding: utf-8 -*-
   2 import json
   3
   4 from django import forms
   5 from django.conf.urls import url, patterns
   6 from django.contrib import admin
   7 from django.contrib.auth.models import User
   8 from django.core.urlresolvers import reverse
   9 from django.http import HttpResponse
  10 from django.template.loader import render_to_string
  11 from django.utils.safestring import mark_safe
  12
  13 from .middleware import get_current_request
  14 from .models import Submission, Assignment, Attachment, exercises
  15
  16
  17 def get_user_exercises(user):
  18     try:
  19         assignment = Assignment.objects.get(user=user)
  20         return [e for e in exercises if e['id'] in assignment.exercises]
  21     except Assignment.DoesNotExist:
  22         return []
  23
  24
  25 readonly_fields = ('submitted_by', 'first_name', 'last_name', 'email', 'key', 'key_sent')
  26
  27
  28 class AttachmentWidget(forms.Widget):
  29     def render(self, name, value, *args, **kwargs):
  30         if value:
  31             a_tag = '<a href="%s">%s</a>' % (value, value)
  32         else:
  33             a_tag = 'brak'
  34         return mark_safe(('<input type="hidden" name="%s" value="%s"/>' % (name, value)) + a_tag)
  35
  36
  37 class TextareaWithLinks(forms.Textarea):
  38     def render(self, name, value, *args, **kwargs):
  39         t, links = value
  40         self.links = links
  41         output = super(TextareaWithLinks, self).render(name, t, *args, **kwargs)
  42         moreoutput = "<div style='margin-left: 106px'>"
  43         for k, n, v in links:
  44             moreoutput += u"<br>%s: %s" % (k, AttachmentWidget().render(n, v))
  45         output += mark_safe(moreoutput + "</div>")
  46         return output
  47
  48
  49 class SubmissionFormBase(forms.ModelForm):
  50     class Meta:
  51         model = Submission
  52         exclude = ('answers', 'marks', 'contact', 'end_time') + readonly_fields
  53
  54
  55 def get_open_answer(answers, exercise):
  56     def get_option(options, id):
  57         for option in options:
  58             if str(option['id']) == id:
  59                 return option
  60
  61     exercise_id = str(exercise['id'])
  62     answer = answers[exercise_id]
  63     if exercise['type'] == 'open':
  64         if isinstance(answer, list):
  65             toret = ''
  66             for part in answer:
  67                 field = get_option(exercise['fields'], part['id'])
  68                 toret += '- %s:\n\n%s\n\n' % (field['caption'], part['text'])
  69         else:
  70             toret = answer
  71     if exercise['type'] == 'edumed_wybor':
  72         ok = set(map(str, exercise['answer'])) == set(map(str, answer['closed_part']))
  73         toret = u'Czesc testowa [%s]:\n' % ('poprawna' if ok else 'niepoprawna')
  74         if len(answer['closed_part']):
  75             for selected in answer['closed_part']:
  76                 option = get_option(exercise['options'], selected)
  77                 toret += '%s: %s\n' % (selected, option['text'])
  78         else:
  79             toret += u'<nie wybrano odpowiedzi>\n'
  80         toret += u'\nCzesc otwarta (%s):\n\n' % ' '.join(exercise['open_part'])
  81         toret += answer['open_part']
  82
  83     return toret
  84
  85
  86 def get_form(request, submission):
  87     fields = dict()
  88     if submission and submission.answers:
  89         answers = json.loads(submission.answers)
  90         user_exercises = get_user_exercises(request.user)
  91         for exercise in exercises:
  92             if exercise not in user_exercises:
  93                 continue
  94
  95             answer_field_name = 'exercise_%s' % exercise['id']
  96             mark_field_name = 'markof_%s_by_%s' % (exercise['id'], request.user.id)
  97             if exercise['type'] in ('open', 'file_upload') or exercise.get('open_part', None):
  98                 if exercise['type'] == 'file_upload':
  99                     try:
 100                         attachment = Attachment.objects.get(submission=submission, exercise_id=exercise['id'])
 101                     except Attachment.DoesNotExist:
 102                         attachment = None
 103                     widget = AttachmentWidget
 104                     initial = attachment.file.url if attachment else None
 105                 else:
 106                     # widget = forms.Textarea(attrs={'readonly':True})
 107                     widget = TextareaWithLinks(attrs={'readonly': True})
 108                     links = []
 109                     qfiles = []
 110                     for qfield in exercise.get('fields', []):
 111                         if qfield.get('type') == 'file':
 112                             qfiles.append((qfield['id'], qfield['caption']))
 113                     if qfiles:
 114                         eid = int(exercise['id'])
 115                         by_tag = {}
 116                         for att in Attachment.objects.filter(submission=submission, exercise_id=eid).order_by('tag'):
 117                             by_tag[att.tag] = att.file.url
 118                         for tag, caption in qfiles:
 119                             v = by_tag.get(tag)
 120                             if v:
 121                                 links.append((caption, "file_%s__%s" % (eid, tag), v))
 122                     initial = get_open_answer(answers, exercise), links
 123
 124                 fields[answer_field_name] = forms.CharField(
 125                     widget=widget,
 126                     initial=initial,
 127                     label=u'Rozwiązanie zadania %s' % exercise['id'],
 128                     required=False
 129                 )
 130
 131                 choices = [(None, '-')]  # + [(i,i) for i in range(exercise['max_points']+1)],
 132                 i = 0
 133                 while i <= exercise['max_points']:
 134                     choices.append((i, i))
 135                     i += .5
 136                 fields[mark_field_name] = forms.ChoiceField(
 137                     choices=choices,
 138                     initial=submission.get_mark(user_id=request.user.id, exercise_id=exercise['id']),
 139                     label=u'Twoja ocena zadania %s' % exercise['id']
 140                 )
 141
 142     if not request.user.is_superuser:
 143         class Meta(SubmissionFormBase.Meta):
 144             pass
 145         Meta.exclude += ('examiners',)
 146         fields['Meta'] = Meta
 147
 148     return type('SubmissionForm', (SubmissionFormBase,), fields)
 149
 150
 151 class SubmissionAdmin(admin.ModelAdmin):
 152     list_display = ('__unicode__', 'todo', 'examiners_repr')
 153     readonly_fields = readonly_fields
 154
 155     def get_form(self, request, obj=None, **kwargs):
 156         return get_form(request, obj)
 157
 158     @staticmethod
 159     def submitted_by(instance):
 160         if instance.contact:
 161             return '<a href="%s">%s</a>' % (
 162                 reverse('admin:contact_contact_change', args=[instance.contact.id]),
 163                 instance.contact.contact
 164             )
 165         return '-'
 166     submitted_by.allow_tags = True
 167     submitted_by.short_description = "Zgłoszony/a przez"
 168
 169     @staticmethod
 170     def todo(submission):
 171         user = get_current_request().user
 172         user_exercises = get_user_exercises(user)
 173         user_marks = submission.marks.get(str(user.id), {})
 174         return ','.join([str(e['id']) for e in user_exercises if str(e['id']) not in user_marks.keys()])
 175     todo.short_description = 'Twoje nieocenione zadania'
 176
 177     @staticmethod
 178     def examiners_repr(submission):
 179         return ', '.join([u.username for u in submission.examiners.all()])
 180     examiners_repr.short_description = 'Przypisani do zgłoszenia'
 181
 182     def save_model(self, request, submission, form, change):
 183         for name, value in form.cleaned_data.items():
 184             if name.startswith('markof_'):
 185                 parts = name.split('_')
 186                 exercise_id = parts[1]
 187                 user_id = parts[3]
 188                 submission.set_mark(user_id=user_id, exercise_id=exercise_id, mark=value)
 189         submission.save()
 190
 191     def changelist_view(self, request, extra_context=None):
 192         context = dict(examiners=[])
 193         assignments = Assignment.objects.all()
 194         if not request.user.is_superuser:
 195             assignments = assignments.filter(user=request.user)
 196         for assignment in assignments:
 197             examiner = dict(name=assignment.user.username, todo=0)
 198             for submission in Submission.objects.filter(examiners=assignment.user):
 199                 for exercise_id in assignment.exercises:
 200                     if submission.get_mark(user_id=assignment.user.id, exercise_id=exercise_id) is None:
 201                         examiner['todo'] += 1
 202             context['examiners'].append(examiner)
 203         return super(SubmissionAdmin, self).changelist_view(request, extra_context=context)
 204
 205     def queryset(self, request):
 206         qs = super(SubmissionAdmin, self).queryset(request)
 207         if not request.user.is_superuser:
 208             qs = qs.filter(examiners=request.user)
 209         return qs
 210
 211     def get_urls(self):
 212         urls = super(SubmissionAdmin, self).get_urls()
 213         return patterns(
 214             '',
 215             url(r'^report/$', self.admin_site.admin_view(report_view), name='wtem_admin_report')
 216         ) + super(SubmissionAdmin, self).get_urls()
 217
 218
 219 class SubmissionsSet:
 220     def __init__(self, submissions):
 221         self.submissions = submissions
 222         self.examiners_by_exercise = {}
 223         for submission in submissions:
 224             for user_id, marks in submission.marks.items():
 225                 user = User.objects.get(pk=user_id)
 226                 for exercise_id in marks.keys():
 227                     examiners = self.examiners_by_exercise.setdefault(exercise_id, [])
 228                     if user not in examiners:
 229                         examiners.append(user)
 230
 231
 232 def report_view(request):
 233     submissions = sorted(Submission.objects.all(), key=lambda s: -s.final_result)
 234     toret = render_to_string('wtem/admin_report.csv', {
 235         'submissionsSet': SubmissionsSet(submissions),
 236         'exercise_ids': [str(e['id']) for e in exercises]})
 237     response = HttpResponse(toret, content_type='text/csv')
 238     response['Content-Disposition'] = 'attachment; filename="wyniki.csv"'
 239     return response
 240
 241 admin.site.register(Submission, SubmissionAdmin)
 242 admin.site.register(Assignment)