| 1 | """Workflow for students. |
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| 2 | """ |
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| 3 | import grok |
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| 4 | from datetime import datetime |
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| 5 | from zope.component import getUtility |
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| 6 | from hurry.workflow.workflow import Transition, WorkflowState, NullCondition |
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| 7 | from hurry.workflow.interfaces import IWorkflowState, IWorkflowTransitionEvent |
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| 8 | from waeup.kofa.interfaces import ( |
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| 9 | IObjectHistory, IKofaWorkflowInfo, IKofaUtils, |
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| 10 | CREATED, ADMITTED, CLEARANCE, REQUESTED, CLEARED, PAID, RETURNING, |
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| 11 | REGISTERED, VALIDATED) |
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| 12 | from waeup.kofa.interfaces import MessageFactory as _ |
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| 13 | from waeup.kofa.workflow import KofaWorkflow, KofaWorkflowInfo |
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| 14 | from waeup.kofa.students.interfaces import IStudent, IStudentsUtils |
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| 15 | from waeup.kofa.utils.helpers import get_current_principal |
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| 16 | |
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| 17 | |
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| 18 | IMPORTABLE_STATES = (ADMITTED, CLEARANCE, REQUESTED, CLEARED, PAID, RETURNING, |
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| 19 | REGISTERED, VALIDATED) |
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| 20 | |
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| 21 | FORBIDDEN_POSTGRAD_STATES = (RETURNING, REGISTERED, VALIDATED) |
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| 22 | |
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| 23 | REGISTRATION_TRANSITIONS = ( |
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| 24 | Transition( |
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| 25 | transition_id = 'create', |
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| 26 | title = _('Create student'), |
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| 27 | source = None, |
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| 28 | condition = NullCondition, |
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| 29 | msg = _('Record created'), |
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| 30 | destination = CREATED), |
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| 31 | |
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| 32 | Transition( |
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| 33 | transition_id = 'admit', |
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| 34 | title = _('Admit student'), |
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| 35 | msg = _('Admitted'), |
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| 36 | source = CREATED, |
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| 37 | destination = ADMITTED), |
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| 38 | |
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| 39 | Transition( |
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| 40 | transition_id = 'reset1', |
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| 41 | title = _('Reset student'), |
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| 42 | msg = _('Reset to initial state'), |
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| 43 | source = ADMITTED, |
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| 44 | destination = CREATED), |
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| 45 | |
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| 46 | Transition( |
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| 47 | transition_id = 'start_clearance', |
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| 48 | title = _('Start clearance'), |
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| 49 | msg = _('Clearance started'), |
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| 50 | source = ADMITTED, |
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| 51 | destination = CLEARANCE), |
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| 52 | |
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| 53 | Transition( |
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| 54 | transition_id = 'reset2', |
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| 55 | title = _('Reset to admitted'), |
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| 56 | msg = _("Reset to 'admitted'"), |
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| 57 | source = CLEARANCE, |
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| 58 | destination = ADMITTED), |
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| 59 | |
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| 60 | Transition( |
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| 61 | transition_id = 'request_clearance', |
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| 62 | title = _('Request clearance'), |
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| 63 | msg = _('Clearance requested'), |
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| 64 | source = CLEARANCE, |
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| 65 | destination = REQUESTED), |
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| 66 | |
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| 67 | Transition( |
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| 68 | transition_id = 'reset3', |
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| 69 | title = _('Reset to clearance started'), |
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| 70 | msg = _("Reset to 'clearance started'"), |
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| 71 | source = REQUESTED, |
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| 72 | destination = CLEARANCE), |
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| 73 | |
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| 74 | Transition( |
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| 75 | transition_id = 'clear', |
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| 76 | title = _('Clear student'), |
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| 77 | msg = _('Cleared'), |
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| 78 | source = REQUESTED, |
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| 79 | destination = CLEARED), |
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| 80 | |
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| 81 | Transition( |
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| 82 | transition_id = 'reset4', |
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| 83 | title = _('Reset to clearance started'), |
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| 84 | msg = _("Reset to 'clearance started'"), |
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| 85 | source = CLEARED, |
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| 86 | destination = CLEARANCE), |
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| 87 | |
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| 88 | Transition( |
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| 89 | transition_id = 'pay_first_school_fee', |
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| 90 | title = _('Pay school fee'), |
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| 91 | msg = _('First school fee payment made'), |
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| 92 | source = CLEARED, |
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| 93 | destination = PAID), |
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| 94 | |
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| 95 | Transition( |
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| 96 | transition_id = 'approve_first_school_fee', |
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| 97 | title = _('Approve payment'), |
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| 98 | msg = _('First school fee payment approved'), |
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| 99 | source = CLEARED, |
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| 100 | destination = PAID), |
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| 101 | |
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| 102 | Transition( |
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| 103 | transition_id = 'reset5', |
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| 104 | title = _('Reset to cleared'), |
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| 105 | msg = _("Reset to 'cleared'"), |
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| 106 | source = PAID, |
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| 107 | destination = CLEARED), |
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| 108 | |
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| 109 | Transition( |
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| 110 | transition_id = 'pay_school_fee', |
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| 111 | title = _('Pay school fee'), |
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| 112 | msg = _('School fee payment made'), |
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| 113 | source = RETURNING, |
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| 114 | destination = PAID), |
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| 115 | |
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| 116 | Transition( |
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| 117 | transition_id = 'pay_pg_fee', |
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| 118 | title = _('Pay PG school fee'), |
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| 119 | msg = _('PG school fee payment made'), |
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| 120 | source = PAID, |
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| 121 | destination = PAID), |
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| 122 | |
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| 123 | Transition( |
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| 124 | transition_id = 'approve_school_fee', |
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| 125 | title = _('Approve school fee payment'), |
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| 126 | msg = _('School fee payment approved'), |
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| 127 | source = RETURNING, |
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| 128 | destination = PAID), |
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| 129 | |
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| 130 | Transition( |
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| 131 | transition_id = 'approve_pg_fee', |
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| 132 | title = _('Approve PG school fee payment'), |
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| 133 | msg = _('PG school fee payment approved'), |
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| 134 | source = PAID, |
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| 135 | destination = PAID), |
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| 136 | |
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| 137 | Transition( |
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| 138 | transition_id = 'reset6', |
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| 139 | title = _('Reset to returning'), |
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| 140 | msg = _("Reset to 'returning'"), |
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| 141 | source = PAID, |
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| 142 | destination = RETURNING), |
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| 143 | |
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| 144 | Transition( |
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| 145 | transition_id = 'register_courses', |
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| 146 | title = _('Register courses'), |
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| 147 | msg = _('Courses registered'), |
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| 148 | source = PAID, |
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| 149 | destination = REGISTERED), |
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| 150 | |
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| 151 | Transition( |
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| 152 | transition_id = 'reset7', |
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| 153 | title = _('Reset to school fee paid'), |
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| 154 | msg = _("Reset to 'school fee paid'"), |
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| 155 | source = REGISTERED, |
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| 156 | destination = PAID), |
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| 157 | |
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| 158 | Transition( |
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| 159 | transition_id = 'validate_courses', |
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| 160 | title = _('Validate courses'), |
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| 161 | msg = _('Courses validated'), |
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| 162 | source = REGISTERED, |
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| 163 | destination = VALIDATED), |
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| 164 | |
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| 165 | Transition( |
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| 166 | transition_id = 'bypass_validation', |
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| 167 | title = _('Return and bypass validation'), |
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| 168 | msg = _("Course validation bypassed"), |
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| 169 | source = REGISTERED, |
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| 170 | destination = RETURNING), |
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| 171 | |
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| 172 | Transition( |
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| 173 | transition_id = 'reset8', |
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| 174 | title = _('Reset to school fee paid'), |
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| 175 | msg = _("Reset to 'school fee paid'"), |
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| 176 | source = VALIDATED, |
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| 177 | destination = PAID), |
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| 178 | |
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| 179 | Transition( |
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| 180 | transition_id = 'return', |
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| 181 | title = _('Return'), |
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| 182 | msg = _("Returned"), |
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| 183 | source = VALIDATED, |
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| 184 | destination = RETURNING), |
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| 185 | |
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| 186 | Transition( |
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| 187 | transition_id = 'reset9', |
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| 188 | title = _('Reset to courses validated'), |
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| 189 | msg = _("Reset to 'courses validated'"), |
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| 190 | source = RETURNING, |
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| 191 | destination = VALIDATED), |
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| 192 | ) |
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| 193 | |
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| 194 | IMPORTABLE_TRANSITIONS = [i.transition_id for i in REGISTRATION_TRANSITIONS] |
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| 195 | |
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| 196 | FORBIDDEN_POSTGRAD_TRANS = ['reset6', 'register_courses'] |
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| 197 | LOCK_CLEARANCE_TRANS = ('reset2', 'request_clearance') |
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| 198 | UNLOCK_CLEARANCE_TRANS = ('reset3', 'reset4', 'start_clearance') |
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| 199 | |
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| 200 | registration_workflow = KofaWorkflow(REGISTRATION_TRANSITIONS) |
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| 201 | |
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| 202 | class RegistrationWorkflowState(WorkflowState, grok.Adapter): |
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| 203 | """An adapter to adapt Student objects to workflow states. |
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| 204 | """ |
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| 205 | grok.context(IStudent) |
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| 206 | grok.provides(IWorkflowState) |
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| 207 | |
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| 208 | state_key = 'wf.registration.state' |
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| 209 | state_id = 'wf.registration.id' |
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| 210 | |
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| 211 | class RegistrationWorkflowInfo(KofaWorkflowInfo, grok.Adapter): |
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| 212 | """Adapter to adapt Student objects to workflow info objects. |
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| 213 | """ |
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| 214 | grok.context(IStudent) |
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| 215 | grok.provides(IKofaWorkflowInfo) |
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| 216 | |
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| 217 | def __init__(self, context): |
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| 218 | self.context = context |
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| 219 | self.wf = registration_workflow |
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| 220 | |
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| 221 | @grok.subscribe(IStudent, IWorkflowTransitionEvent) |
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| 222 | def handle_student_transition_event(obj, event): |
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| 223 | """Append message to student history and log file when transition happened. |
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| 224 | |
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| 225 | Lock and unlock clearance form. |
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| 226 | Trigger actions after school fee payment. |
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| 227 | """ |
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| 228 | |
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| 229 | msg = event.transition.user_data['msg'] |
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| 230 | history = IObjectHistory(obj) |
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| 231 | history.addMessage(msg) |
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| 232 | if event.transition.transition_id in LOCK_CLEARANCE_TRANS: |
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| 233 | obj.clearance_locked = True |
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| 234 | if event.transition.transition_id in UNLOCK_CLEARANCE_TRANS: |
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| 235 | obj.clearance_locked = False |
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| 236 | # School fee payment of returning students triggers the change of |
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| 237 | # current session, current level, and current verdict |
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| 238 | if event.transition.transition_id in ( |
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| 239 | 'pay_school_fee', 'approve_school_fee'): |
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| 240 | getUtility(IStudentsUtils).setReturningData(obj) |
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| 241 | elif event.transition.transition_id in ( |
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| 242 | 'pay_pg_fee', 'approve_pg_fee'): |
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| 243 | new_session = obj['studycourse'].current_session + 1 |
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| 244 | obj['studycourse'].current_session = new_session |
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| 245 | elif event.transition.transition_id == 'validate_courses': |
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| 246 | current_level = obj['studycourse'].current_level |
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| 247 | level_object = obj['studycourse'].get(str(current_level), None) |
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| 248 | if level_object is not None: |
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| 249 | user = get_current_principal() |
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| 250 | if user is None: |
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| 251 | usertitle = 'system' |
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| 252 | else: |
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| 253 | usertitle = getattr(user, 'public_name', None) |
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| 254 | if not usertitle: |
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| 255 | usertitle = user.title |
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| 256 | level_object.validated_by = usertitle |
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| 257 | level_object.validation_date = datetime.utcnow() |
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| 258 | elif event.transition.transition_id == 'clear': |
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| 259 | obj.officer_comment = None |
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| 260 | elif event.transition.transition_id == 'reset8': |
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| 261 | current_level = obj['studycourse'].current_level |
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| 262 | level_object = obj['studycourse'].get(str(current_level), None) |
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| 263 | if level_object is not None: |
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| 264 | level_object.validated_by = None |
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| 265 | level_object.validation_date = None |
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| 266 | # In some tests we don't have a students container |
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| 267 | try: |
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| 268 | students_container = grok.getSite()['students'] |
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| 269 | students_container.logger.info('%s - %s' % (obj.student_id,msg)) |
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| 270 | except (TypeError, AttributeError): |
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| 271 | pass |
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| 272 | return |
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