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