## $Id: export.py 8493 2012-05-23 05:59:19Z henrik $ ## ## Copyright (C) 2011 Uli Fouquet & Henrik Bettermann ## This program is free software; you can redistribute it and/or modify ## it under the terms of the GNU General Public License as published by ## the Free Software Foundation; either version 2 of the License, or ## (at your option) any later version. ## ## This program is distributed in the hope that it will be useful, ## but WITHOUT ANY WARRANTY; without even the implied warranty of ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ## GNU General Public License for more details. ## ## You should have received a copy of the GNU General Public License ## along with this program; if not, write to the Free Software ## Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA ## """Exporters for student related stuff. """ import grok from zope.catalog.interfaces import ICatalog from zope.component import queryUtility from waeup.kofa.interfaces import MessageFactory as _ from waeup.kofa.students.interfaces import ( IStudent, IStudentStudyCourse, IStudentStudyLevel, ICourseTicket, IStudentOnlinePayment, ICSVStudentExporter) from waeup.kofa.utils.batching import ExporterBase from waeup.kofa.utils.helpers import iface_names #: A tuple containing all exporter names referring to students or #: subobjects thereof. EXPORTER_NAMES = ('students', 'studentstudycourses', 'studentstudylevels', 'coursetickets', 'studentpayments') def get_students(site): """Get all students registered in catalog in `site`. """ catalog = queryUtility( ICatalog, context=site, name='students_catalog', default=None) if catalog is None: return [] students = catalog.searchResults(student_id=(None, None)) return students def get_studycourses(students): """Get studycourses of `students`. """ return [x.get('studycourse', None) for x in students if x is not None] def get_levels(students): """Get all studylevels of `students`. """ levels = [] for course in get_studycourses(students): for level in course.values(): levels.append(level) return levels def get_tickets(students): """Get all course tickets of `students`. """ tickets = [] for level in get_levels(students): for ticket in level.values(): tickets.append(ticket) return tickets def get_payments(students): """Get all payments of `students`. """ payments = [] for student in students: for payment in student.get('payments', {}).values(): payments.append(payment) return payments class StudentExporterBase(ExporterBase): """Exporter for students or related objects. This is a baseclass. """ grok.baseclass() grok.implements(ICSVStudentExporter) grok.provides(ICSVStudentExporter) def export(self, values, filepath=None): """Export `values`, an iterable, as CSV file. If `filepath` is ``None``, a raw string with CSV data is returned. """ writer, outfile = self.get_csv_writer(filepath) for value in values: self.write_item(value, writer) return self.close_outfile(filepath, outfile) class StudentsExporter(grok.GlobalUtility, StudentExporterBase): """Exporter for Students. """ grok.name('students') #: Fieldnames considered by this exporter fields = tuple(sorted(iface_names( IStudent, omit=['loggerInfo']))) + ( 'password', 'state', 'history', 'certcode') #: The title under which this exporter will be displayed title = _(u'Students') def mangle_value(self, value, name, context=None): if name == 'history': value = value.messages return super( StudentsExporter, self).mangle_value( value, name, context=context) def export_all(self, site, filepath=None): """Export students into filepath as CSV data. If `filepath` is ``None``, a raw string with CSV data is returned. """ return self.export(get_students(site), filepath) def export_student(self, student, filepath=None): return self.export([student], filepath=filepath) class StudentStudyCourseExporter(grok.GlobalUtility, StudentExporterBase): """Exporter for StudentStudyCourses. """ grok.name('studentstudycourses') #: Fieldnames considered by this exporter fields = tuple(sorted(iface_names(IStudentStudyCourse))) + ('student_id',) #: The title under which this exporter will be displayed title = _(u'Student Study Courses') def mangle_value(self, value, name, context=None): """Treat location values special. """ if name == 'certificate' and value is not None: # XXX: hopefully cert codes are unique site-wide value = value.code if name == 'student_id' and context is not None: student = context.getStudent() value = getattr(student, name, None) return super( StudentStudyCourseExporter, self).mangle_value( value, name, context=context) def export_all(self, site, filepath=None): """Export study courses into filepath as CSV data. If `filepath` is ``None``, a raw string with CSV data is returned. """ return self.export(get_studycourses(get_students(site)), filepath) def export_student(self, student, filepath=None): """Export studycourse of a single student object. """ return self.export(get_studycourses([student]), filepath) class StudentStudyLevelExporter(grok.GlobalUtility, StudentExporterBase): """Exporter for StudentStudyLevels. """ grok.name('studentstudylevels') #: Fieldnames considered by this exporter fields = tuple(sorted(iface_names( IStudentStudyLevel) + ['level'])) + ('student_id',) #: The title under which this exporter will be displayed title = _(u'Student Study Levels') def mangle_value(self, value, name, context=None): """Treat location values special. """ if name == 'student_id' and context is not None: student = context.getStudent() value = getattr(student, name, None) return super( StudentStudyLevelExporter, self).mangle_value( value, name, context=context) def export_all(self, site, filepath=None): """Export study levels into filepath as CSV data. If `filepath` is ``None``, a raw string with CSV data is returned. """ return self.export(get_levels(get_students(site)), filepath) def export_student(self, student, filepath=None): return self.export(get_levels([student]), filepath) class CourseTicketExporter(grok.GlobalUtility, StudentExporterBase): """Exporter for CourseTickets. """ grok.name('coursetickets') #: Fieldnames considered by this exporter fields = tuple(sorted(iface_names(ICourseTicket) + ['level', 'code', 'title', 'credits', 'passmark', 'semester', 'fcode', 'dcode'])) + ('student_id',) #: The title under which this exporter will be displayed title = _(u'Course Tickets') def mangle_value(self, value, name, context=None): """Treat location values special. """ if context is not None: student = context.getStudent() if name == 'student_id' and student is not None: value = getattr(student, name, None) if name == 'level': value = getattr(context, 'getLevel', lambda: None)() return super( CourseTicketExporter, self).mangle_value( value, name, context=context) def export_all(self, site, filepath=None): """Export course tickets into filepath as CSV data. If `filepath` is ``None``, a raw string with CSV data is returned. """ return self.export(get_tickets(get_students(site)), filepath) def export_student(self, student, filepath=None): return self.export(get_tickets([student]), filepath) class PaymentsExporter(grok.GlobalUtility, StudentExporterBase): """Exporter for OnlinePayment instances. """ grok.name('studentpayments') #: Fieldnames considered by this exporter fields = tuple( sorted(iface_names( IStudentOnlinePayment, exclude_attribs=False))) + ('student_id',) #: The title under which this exporter will be displayed title = _(u'Course Tickets') def mangle_value(self, value, name, context=None): """Treat location values special. """ if context is not None: student = context.getStudent() if name in ['student_id'] and student is not None: value = getattr(student, name, None) return super( PaymentsExporter, self).mangle_value( value, name, context=context) def export_all(self, site, filepath=None): """Export payments into filepath as CSV data. If `filepath` is ``None``, a raw string with CSV data is returned. """ return self.export(get_payments(get_students(site)), filepath) def export_student(self, student, filepath=None): return self.export(get_payments([student]), filepath)