def source_new(request):
"""
Page with the form to create a new Source.
"""
# We can get here one of two ways: either we just got to the form
# page, or we just submitted the form. If POST, we submitted; if
# GET, we just got here.
if request.method == 'POST':
# A form bound to the POST data
sourceForm = ImageSourceForm(request.POST)
pointGenForm = PointGenForm(request.POST)
annotationAreaForm = AnnotationAreaPercentsForm(request.POST)
# is_valid() calls our ModelForm's clean() and checks validity
source_form_is_valid = sourceForm.is_valid()
point_gen_form_is_valid = pointGenForm.is_valid()
annotation_area_form_is_valid = annotationAreaForm.is_valid()
if source_form_is_valid and point_gen_form_is_valid and annotation_area_form_is_valid:
# After calling a ModelForm's is_valid(), an instance is created.
# We can get this instance and add a bit more to it before saving to the DB.
newSource = sourceForm.instance
newSource.default_point_generation_method = PointGen.args_to_db_format(**pointGenForm.cleaned_data)
newSource.image_annotation_area = AnnotationAreaUtils.percentages_to_db_format(**annotationAreaForm.cleaned_data)
newSource.labelset = LabelSet.getEmptyLabelset()
newSource.save()
# Make the user a source admin
newSource.assign_role(request.user, Source.PermTypes.ADMIN.code)
# Add a success message
messages.success(request, 'Source successfully created.')
# Redirect to the source's main page
return HttpResponseRedirect(reverse('source_main', args=[newSource.id]))
else:
# Show the form again, with error message
messages.error(request, 'Please correct the errors below.')
else:
# An unbound form (empty form)
sourceForm = ImageSourceForm()
pointGenForm = PointGenForm()
annotationAreaForm = AnnotationAreaPercentsForm()
# RequestContext needed for CSRF verification of POST form,
# and to correctly get the path of the CSS file being used.
return render_to_response('images/source_new.html', {
'sourceForm': sourceForm,
'pointGenForm': pointGenForm,
'annotationAreaForm': annotationAreaForm,
},
context_instance=RequestContext(request)
)
def source_edit(request, source_id):
"""
Edit a source: name, visibility, location keys, etc.
"""
source = get_object_or_404(Source, id=source_id)
if request.method == 'POST':
# Cancel
cancel = request.POST.get('cancel', None)
if cancel:
messages.success(request, 'Edit cancelled.')
return HttpResponseRedirect(reverse('source_main', args=[source_id]))
# Submit
sourceForm = ImageSourceForm(request.POST, instance=source)
pointGenForm = PointGenForm(request.POST)
annotationAreaForm = AnnotationAreaPercentsForm(request.POST)
# Make sure is_valid() is called for all forms, so all forms are checked and
# all relevant error messages appear.
source_form_is_valid = sourceForm.is_valid()
point_gen_form_is_valid = pointGenForm.is_valid()
annotation_area_form_is_valid = annotationAreaForm.is_valid()
if source_form_is_valid and point_gen_form_is_valid and annotation_area_form_is_valid:
editedSource = sourceForm.instance
editedSource.default_point_generation_method = PointGen.args_to_db_format(**pointGenForm.cleaned_data)
editedSource.image_annotation_area = AnnotationAreaUtils.percentages_to_db_format(**annotationAreaForm.cleaned_data)
editedSource.save()
messages.success(request, 'Source successfully edited.')
return HttpResponseRedirect(reverse('source_main', args=[source_id]))
else:
messages.error(request, 'Please correct the errors below.')
else:
# Just reached this form page
sourceForm = ImageSourceForm(instance=source)
pointGenForm = PointGenForm(source=source)
annotationAreaForm = AnnotationAreaPercentsForm(source=source)
return render_to_response('images/source_edit.html', {
'source': source,
'editSourceForm': sourceForm,
'pointGenForm': pointGenForm,
'annotationAreaForm': annotationAreaForm,
},
context_instance=RequestContext(request)
)