source: main/waeup.kofa/trunk/src/waeup/kofa/students/workflow.py @ 15419

Last change on this file since 15419 was 15402, checked in by Henrik Bettermann, 6 years ago

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1## $Id: workflow.py 15402 2019-05-07 08:07:52Z henrik $
2##
3## Copyright (C) 2011 Uli Fouquet & Henrik Bettermann
4## This program is free software; you can redistribute it and/or modify
5## it under the terms of the GNU General Public License as published by
6## the Free Software Foundation; either version 2 of the License, or
7## (at your option) any later version.
8##
9## This program is distributed in the hope that it will be useful,
10## but WITHOUT ANY WARRANTY; without even the implied warranty of
11## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12## GNU General Public License for more details.
13##
14## You should have received a copy of the GNU General Public License
15## along with this program; if not, write to the Free Software
16## Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17##
18"""Workflow for students.
19"""
20import grok
21from datetime import datetime
22from zope.component import getUtility
23from hurry.workflow.workflow import Transition, WorkflowState, NullCondition
24from hurry.workflow.interfaces import IWorkflowState, IWorkflowTransitionEvent
25from waeup.kofa.interfaces import (
26    IObjectHistory, IKofaWorkflowInfo, IKofaUtils,
27    CREATED, ADMITTED, CLEARANCE, REQUESTED, CLEARED, PAID, RETURNING,
28    REGISTERED, VALIDATED, GRADUATED, TRANSREQ, TRANSVAL, TRANSREL,
29    IExtFileStore)
30from waeup.kofa.interfaces import MessageFactory as _
31from waeup.kofa.workflow import KofaWorkflow, KofaWorkflowInfo
32from waeup.kofa.students.interfaces import IStudent, IStudentsUtils
33from waeup.kofa.utils.helpers import get_current_principal
34
35
36IMPORTABLE_STATES = (ADMITTED, CLEARANCE, REQUESTED, CLEARED, PAID, RETURNING,
37    REGISTERED, VALIDATED, GRADUATED)
38
39FORBIDDEN_POSTGRAD_STATES = (RETURNING, REGISTERED, VALIDATED)
40
41REGISTRATION_TRANSITIONS = (
42    Transition(
43        transition_id = 'create',
44        title = _('Create student'),
45        source = None,
46        condition = NullCondition,
47        msg = _('Record created'),
48        destination = CREATED),
49
50    Transition(
51        transition_id = 'admit',
52        title = _('Admit student'),
53        msg = _('Admitted'),
54        source = CREATED,
55        destination = ADMITTED),
56
57    Transition(
58        transition_id = 'reset1',
59        title = _('Reset student'),
60        msg = _('Reset to initial state'),
61        source = ADMITTED,
62        destination = CREATED),
63
64    Transition(
65        transition_id = 'start_clearance',
66        title = _('Start clearance'),
67        msg = _('Clearance started'),
68        source = ADMITTED,
69        destination = CLEARANCE),
70
71    Transition(
72        transition_id = 'reset2',
73        title = _('Reset to admitted'),
74        msg = _("Reset to 'admitted'"),
75        source = CLEARANCE,
76        destination = ADMITTED),
77
78    Transition(
79        transition_id = 'request_clearance',
80        title = _('Request clearance'),
81        msg = _('Clearance requested'),
82        source = CLEARANCE,
83        destination = REQUESTED),
84
85    Transition(
86        transition_id = 'reset3',
87        title = _('Reset to clearance started'),
88        msg = _("Reset to 'clearance started'"),
89        source = REQUESTED,
90        destination = CLEARANCE),
91
92    Transition(
93        transition_id = 'clear',
94        title = _('Clear student'),
95        msg = _('Cleared'),
96        source = REQUESTED,
97        destination = CLEARED),
98
99    Transition(
100        transition_id = 'reset4',
101        title = _('Reset to clearance started'),
102        msg = _("Reset to 'clearance started'"),
103        source = CLEARED,
104        destination = CLEARANCE),
105
106    Transition(
107        transition_id = 'pay_first_school_fee',
108        title = _('Pay school fee'),
109        msg = _('First school fee payment made'),
110        source = CLEARED,
111        destination = PAID),
112
113    Transition(
114        transition_id = 'approve_first_school_fee',
115        title = _('Approve payment'),
116        msg = _('First school fee payment approved'),
117        source = CLEARED,
118        destination = PAID),
119
120    Transition(
121        transition_id = 'reset5',
122        title = _('Reset to cleared'),
123        msg = _("Reset to 'cleared'"),
124        source = PAID,
125        destination = CLEARED),
126
127    Transition(
128        transition_id = 'pay_school_fee',
129        title = _('Pay school fee'),
130        msg = _('School fee payment made'),
131        source = RETURNING,
132        destination = PAID),
133
134    Transition(
135        transition_id = 'pay_pg_fee',
136        title = _('Pay PG school fee'),
137        msg = _('PG school fee payment made'),
138        source = PAID,
139        destination = PAID),
140
141    Transition(
142        transition_id = 'approve_school_fee',
143        title = _('Approve school fee payment'),
144        msg = _('School fee payment approved'),
145        source = RETURNING,
146        destination = PAID),
147
148    Transition(
149        transition_id = 'approve_pg_fee',
150        title = _('Approve PG school fee payment'),
151        msg = _('PG school fee payment approved'),
152        source = PAID,
153        destination = PAID),
154
155    Transition(
156        transition_id = 'reset6',
157        title = _('Reset to returning'),
158        msg = _("Reset to 'returning'"),
159        source = PAID,
160        destination = RETURNING),
161
162    Transition(
163        transition_id = 'register_courses',
164        title = _('Register courses'),
165        msg = _('Courses registered'),
166        source = PAID,
167        destination = REGISTERED),
168
169    Transition(
170        transition_id = 'reset7',
171        title = _('Unregister courses'),
172        msg = _("Courses unregistered"),
173        source = REGISTERED,
174        destination = PAID),
175
176    Transition(
177        transition_id = 'validate_courses',
178        title = _('Validate courses'),
179        msg = _('Courses validated'),
180        source = REGISTERED,
181        destination = VALIDATED),
182
183    Transition(
184        transition_id = 'bypass_validation',
185        title = _('Return and bypass validation'),
186        msg = _("Course validation bypassed"),
187        source = REGISTERED,
188        destination = RETURNING),
189
190    Transition(
191        transition_id = 'reset8',
192        title = _('Reset to school fee paid'),
193        msg = _("Reset to 'school fee paid'"),
194        source = VALIDATED,
195        destination = PAID),
196
197    Transition(
198        transition_id = 'return',
199        title = _('Return'),
200        msg = _("Returned"),
201        source = VALIDATED,
202        destination = RETURNING),
203
204    Transition(
205        transition_id = 'reset9',
206        title = _('Reset to courses validated'),
207        msg = _("Reset to 'courses validated'"),
208        source = RETURNING,
209        destination = VALIDATED),
210
211    # There is no transition to graduated.
212
213    Transition(
214        transition_id = 'request_transcript',
215        title = _('Request transript'),
216        msg = _("Transcript requested"),
217        source = GRADUATED,
218        destination = TRANSREQ),
219
220    Transition(
221        transition_id = 'reset10',
222        title = _('Reject transcript request'),
223        msg = _("Transcript request rejected"),
224        source = TRANSREQ,
225        destination = GRADUATED),
226
227    Transition(
228        transition_id = 'validate_transcript',
229        title = _('Validate transcript'),
230        msg = _("Transcript validated"),
231        source = TRANSREQ,
232        destination = TRANSVAL),
233
234    Transition(
235        transition_id = 'release_transcript',
236        title = _('Release transcript'),
237        msg = _("Transcript released"),
238        source = TRANSVAL,
239        destination = TRANSREL),
240
241    Transition(
242        transition_id = 'reset11',
243        title = _('Reset to graduated'),
244        msg = _("Transcript process reset"),
245        source = TRANSREL,
246        destination = GRADUATED),
247    )
248
249
250IMPORTABLE_TRANSITIONS = [i.transition_id for i in REGISTRATION_TRANSITIONS]
251
252FORBIDDEN_POSTGRAD_TRANS = ['reset6', 'register_courses']
253
254registration_workflow = KofaWorkflow(REGISTRATION_TRANSITIONS)
255
256class RegistrationWorkflowState(WorkflowState, grok.Adapter):
257    """An adapter to adapt Student objects to workflow states.
258    """
259    grok.context(IStudent)
260    grok.provides(IWorkflowState)
261
262    state_key = 'wf.registration.state'
263    state_id = 'wf.registration.id'
264
265class RegistrationWorkflowInfo(KofaWorkflowInfo, grok.Adapter):
266    """Adapter to adapt Student objects to workflow info objects.
267    """
268    grok.context(IStudent)
269    grok.provides(IKofaWorkflowInfo)
270
271    def __init__(self, context):
272        self.context = context
273        self.wf = registration_workflow
274
275@grok.subscribe(IStudent, IWorkflowTransitionEvent)
276def handle_student_transition_event(obj, event):
277    """Append message to student history and log file when transition happened.
278
279    Lock and unlock clearance form.
280    Trigger actions after school fee payment.
281    """
282
283    msg = event.transition.user_data['msg']
284    history = IObjectHistory(obj)
285    history.addMessage(msg)
286    # School fee payment of returning students triggers the change of
287    # current session, current level, and current verdict
288    if event.transition.transition_id in (
289        'pay_school_fee', 'approve_school_fee'):
290        getUtility(IStudentsUtils).setReturningData(obj)
291    elif event.transition.transition_id in (
292        'pay_pg_fee', 'approve_pg_fee'):
293        new_session = obj['studycourse'].current_session + 1
294        obj['studycourse'].current_session = new_session
295    elif event.transition.transition_id == 'validate_courses':
296        current_level = obj['studycourse'].current_level
297        level_object = obj['studycourse'].get(str(current_level), None)
298        if level_object is not None:
299            user = get_current_principal()
300            if user is None:
301                usertitle = 'system'
302            else:
303                usertitle = getattr(user, 'public_name', None)
304                if not usertitle:
305                    usertitle = user.title
306            level_object.validated_by = usertitle
307            level_object.validation_date = datetime.utcnow()
308    elif event.transition.transition_id == 'clear':
309        obj.officer_comment = None
310    elif event.transition.transition_id == 'reset8':
311        current_level = obj['studycourse'].current_level
312        level_object = obj['studycourse'].get(str(current_level), None)
313        if level_object is not None:
314            level_object.validated_by = None
315            level_object.validation_date = None
316    elif event.transition.transition_id == 'reset11':
317        transcript_file = getUtility(IExtFileStore).getFileByContext(
318            obj, attr='final_transcript')
319        if transcript_file:
320            getUtility(IExtFileStore).deleteFileByContext(
321                obj, attr='final_transcript')
322        obj['studycourse'].transcript_comment = None
323        obj['studycourse'].transcript_signees = None
324    # In some tests we don't have a students container
325    try:
326        students_container = grok.getSite()['students']
327        students_container.logger.info('%s - %s' % (obj.student_id,msg))
328    except (TypeError, AttributeError):
329        pass
330    return
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