link field type

[edumed.git] / stage2 / forms.py

diff --git a/stage2/forms.py b/stage2/forms.py
index 9ff44f7..ee25a03 100644 (file)
--- a/stage2/forms.py
+++ b/stage2/forms.py
@@ -1,15 +1,109 @@
 # -*- coding: utf-8 -*-
 from django import forms
+from django.conf import settings
+from django.template.defaultfilters import filesizeformat
 
-from stage2.models import Attachment
+from stage2.models import Attachment, Mark, FieldOptionSet, FieldOption
 
 
 class AttachmentForm(forms.ModelForm):
+    assignment_id = forms.CharField(widget=forms.HiddenInput)
+
     class Meta:
         model = Attachment
         fields = ['file']
 
-    def __init__(self, assignment, file_no, label, *args, **kwargs):
+    def __init__(self, assignment, file_no, label, extensions=None, *args, **kwargs):
         prefix = 'att%s-%s' % (assignment.id, file_no)
         super(AttachmentForm, self).__init__(*args, prefix=prefix, **kwargs)
+        self.fields['assignment_id'].initial = assignment.id
         self.fields['file'].label = label
+        if extensions:
+            self.fields['file'].widget.attrs = {'data-ext': '|'.join(extensions)}
+        self.extensions = extensions
+
+    def clean_file(self):
+        file = self.cleaned_data['file']
+        if file.size > settings.MAX_UPLOAD_SIZE:
+            raise forms.ValidationError(
+                'Please keep filesize under %s. Current filesize: %s' % (
+                    filesizeformat(settings.MAX_UPLOAD_SIZE), filesizeformat(file.size)))
+        if self.extensions and ('.' not in file.name or file.name.rsplit('.', 1)[1].lower() not in self.extensions):
+            raise forms.ValidationError('Incorrect extension, should be one of: %s' % ', '.join(self.extensions))
+        return file
+
+
+class AssignmentFieldForm(forms.Form):
+    value = forms.CharField(required=False)
+    assignment_id = forms.CharField(widget=forms.HiddenInput)
+
+    def __init__(self, label, field_no, options, answer, *args, **kwargs):
+        prefix = 'field%s-%s' % (answer.id, field_no)
+        super(AssignmentFieldForm, self).__init__(prefix=prefix, *args, **kwargs)
+        self.answer = answer
+        self.label = label
+        self.fields['value'].label = label
+        self.type = options['type']
+        self.fields['assignment_id'].initial = answer.assignment.id
+        if self.type == 'options':
+            option_set = FieldOptionSet.objects.get(name=options['option_set'])
+            self.fields['value'].widget = forms.Select(choices=option_set.choices(answer))
+            options = answer.fieldoption_set.all()
+            if options:
+                self.fields['value'].initial = options.get().id
+        else:
+            value = answer.field_values.get(label)
+            self.fields['value'].initial = value or ''
+
+    def clean_value(self):
+        if self.type == 'options':
+            value = self.cleaned_data['value']
+            if value:
+                option = FieldOption.objects.get(id=int(value))
+                if option.answer != self.answer and option.answer is not None:
+                    raise forms.ValidationError(u'Ta opcja została już wybrana przez kogoś innego.')
+                return option
+        return self.cleaned_data['value']
+
+    def save(self):
+        value = self.cleaned_data['value']
+        if self.type == 'options':
+            option = value
+            if option:
+                if option.answer != self.answer:
+                    # not thread-safe :/
+                    assert not option.answer
+                    for opt in self.answer.fieldoption_set.all():
+                        opt.answer = None
+                        opt.save()
+                    option.answer = self.answer
+                    option.save()
+            else:
+                for opt in self.answer.fieldoption_set.all():
+                    opt.answer = None
+                    opt.save()
+        else:
+            self.answer.field_values[self.label] = value
+            self.answer.save()
+
+
+class MarkForm(forms.ModelForm):
+    class Meta:
+        model = Mark
+        fields = ['points']
+        widgets = {
+            'points': forms.TextInput(attrs={'type': 'number', 'min': 0, 'step': '0.5'})
+        }
+
+    def __init__(self, answer, *args, **kwargs):
+        super(MarkForm, self).__init__(*args, **kwargs)
+        self.answer = answer
+        self.fields['points'].widget.attrs['max'] = answer.assignment.max_points
+
+    def clean_points(self):
+        points = self.cleaned_data['points']
+        if points > self.answer.assignment.max_points:
+            raise forms.ValidationError('Too many points for this assignment')
+        if points < 0:
+            raise forms.ValidationError('Points cannot be negative')
+        return points