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
  11 from .models import Submission, Assignment, Attachment, exercises
  12 from .middleware import get_current_request
  13
  14
  15 def get_user_exercises(user):
  16     try:
  17         assignment = Assignment.objects.get(user = user)
  18         return [e for e in exercises if e['id'] in assignment.exercises]
  19     except Assignment.DoesNotExist:
  20         return []
  21
  22
  23 readonly_fields = ('submitted_by', 'first_name', 'last_name', 'email', 'key', 'key_sent')
  24
  25 class AttachmentWidget(forms.Widget):
  26     def render(self, name, value, *args, **kwargs):
  27         if value:
  28             a_tag = '<a href="%s">%s</a>' % (value, value)
  29         else:
  30             a_tag = 'brak'
  31         return mark_safe(('<input type="hidden" name="%s" value="%s"/>' + a_tag) % (name, value))
  32
  33 class SubmissionFormBase(forms.ModelForm):
  34     class Meta:
  35         model = Submission
  36         exclude = ('answers', 'marks', 'contact') + readonly_fields
  37
  38
  39 def get_open_answer(answers, exercise):
  40     def get_option(options, id):
  41         for option in options:
  42             if option['id'] == int(id):
  43                 return option
  44
  45     exercise_id = str(exercise['id'])
  46     answer = answers[exercise_id]
  47     if exercise['type'] == 'open':
  48         if isinstance(answer, list):
  49             toret = ''
  50             for part in answer:
  51                 field = get_option(exercise['fields'], part['id'])
  52                 toret += '- %s:\n\n%s\n\n' % (field['caption'], part['text'])
  53         else:
  54             toret = answer
  55     if exercise['type'] == 'edumed_wybor':
  56         ok = set(map(str, exercise['answer'])) == set(map(str,answer['closed_part']))
  57         toret = u'Czesc testowa [%s]:\n' % ('poprawna' if ok else 'niepoprawna')
  58         for selected in answer['closed_part']:
  59             option = get_option(exercise['options'], selected)
  60             toret += '%s: %s\n' % (selected, option['text'])
  61         else:
  62             toret += u'<nie wybrano odpowiedzi>\n'
  63         toret += u'\nCzesc otwarta (%s):\n\n' % ' '.join(exercise['open_part'])
  64         toret += answer['open_part']
  65
  66     return toret
  67
  68
  69 def get_form(request, submission):
  70     fields = dict()
  71     if submission.answers:
  72         answers = simplejson.loads(submission.answers)
  73         user_exercises = get_user_exercises(request.user)
  74         for exercise in exercises:
  75             if exercise not in user_exercises:
  76                 continue
  77
  78             answer_field_name = 'exercise_%s' % exercise['id']
  79             mark_field_name = 'markof_%s_by_%s' % (exercise['id'], request.user.id)
  80             if exercise['type'] in ('open', 'file_upload') or exercise.get('open_part', None):
  81                 if exercise['type'] == 'file_upload':
  82                     try:
  83                         attachment = Attachment.objects.get(submission = submission, exercise_id = exercise['id'])
  84                     except Attachment.DoesNotExist:
  85                         attachment = None
  86                     widget = AttachmentWidget
  87                     initial = attachment.file.url if attachment else None
  88                 else:
  89                     widget = forms.Textarea(attrs={'readonly':True})
  90                     initial = get_open_answer(answers, exercise)
  91
  92                 fields[answer_field_name] = forms.CharField(
  93                         widget = widget,
  94                         initial = initial,
  95                         label = 'Rozwiązanie zadania %s' % exercise['id']
  96                 )
  97
  98                 fields[mark_field_name] = forms.ChoiceField(
  99                     choices = [(None, '-')] + [(i,i) for i in range(exercise['max_points']+1)],
 100                     initial = submission.get_mark(user_id = request.user.id, exercise_id = exercise['id']),
 101                     label = u'Twoja ocena zadania %s' % exercise['id']
 102                 )
 103
 104     if not request.user.is_superuser:
 105         class Meta(SubmissionFormBase.Meta):
 106             pass
 107         Meta.exclude += ('examiners',)
 108         fields['Meta'] = Meta
 109
 110     return type('SubmissionForm', (SubmissionFormBase,), fields)
 111
 112
 113 class SubmissionAdmin(admin.ModelAdmin):
 114     list_display = ('__unicode__', 'todo', 'examiners_repr')
 115     readonly_fields = readonly_fields
 116
 117     def get_form(self, request, obj, **kwargs):
 118         return get_form(request, obj)
 119
 120     def submitted_by(self, instance):
 121         if instance.contact:
 122             return '<a href="%s">%s</a>' % (
 123                 reverse('admin:contact_contact_change', args = [instance.contact.id]),
 124                 instance.contact.contact
 125             )
 126         return '-'
 127     submitted_by.allow_tags = True
 128     submitted_by.short_description = "Zgłoszony/a przez"
 129
 130     def todo(self, submission):
 131         user = get_current_request().user
 132         user_exercises = get_user_exercises(user)
 133         user_marks = submission.marks.get(str(user.id), {})
 134         return ','.join([str(e['id']) for e in user_exercises if str(e['id']) not in user_marks.keys()])
 135
 136     def examiners_repr(self, submission):
 137         return ', '.join([u.username for u in submission.examiners.all()])
 138     examiners_repr.short_description = 'Przypisani'
 139
 140     def save_model(self, request, submission, form, change):
 141         for name, value in form.cleaned_data.items():
 142             if name.startswith('markof_'):
 143                 parts = name.split('_')
 144                 exercise_id = parts[1]
 145                 user_id = parts[3]
 146                 submission.set_mark(user_id = user_id, exercise_id = exercise_id, mark = value)
 147         submission.save()
 148
 149     def changelist_view(self, request, extra_context=None):
 150         context = dict(examiners = [])
 151         if request.user.is_superuser:
 152             submissions = Submission.objects.all()
 153             for assignment in Assignment.objects.all():
 154                 examiner = dict(name = assignment.user.username, todo = 0)
 155                 for submission in Submission.objects.filter(examiners = assignment.user):
 156                     for exercise_id in assignment.exercises:
 157                         if submission.get_mark(user_id = assignment.user.id, exercise_id = exercise_id) is None:
 158                             examiner['todo'] += 1
 159                 context['examiners'].append(examiner)
 160         return super(SubmissionAdmin, self).changelist_view(request, extra_context = context)
 161
 162     def queryset(self, request):
 163         qs = super(SubmissionAdmin, self).queryset(request)
 164         if not request.user.is_superuser:
 165             qs = qs.filter(examiners = request.user)
 166         return qs
 167
 168
 169 admin.site.register(Submission, SubmissionAdmin)
 170 admin.site.register(Assignment)