Cédric Krier
dcc1770b5b
- Manage None as value of field in on_change method issue6069 review27851002
118 lines
3.8 KiB
Python
118 lines
3.8 KiB
Python
# This file is part of Tryton. The COPYRIGHT file at the top level of
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# this repository contains the full copyright notices and license terms.
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from textwrap import TextWrapper
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from sql import Null
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from sql.conditionals import Case
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from ..model import ModelView, ModelSQL, ModelStorage, fields
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from ..pool import Pool
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from ..transaction import Transaction
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from ..tools import grouped_slice, reduce_ids
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from ..pyson import Eval
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from .resource import ResourceMixin
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__all__ = ['Note', 'NoteRead']
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class Note(ResourceMixin, ModelSQL, ModelView):
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"Note"
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__name__ = 'ir.note'
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message = fields.Text('Message', states={
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'readonly': Eval('id', 0) > 0,
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})
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message_wrapped = fields.Function(fields.Text('Message'),
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'on_change_with_message_wrapped')
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unread = fields.Function(fields.Boolean('Unread'), 'get_unread',
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searcher='search_unread', setter='set_unread')
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@staticmethod
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def default_unread():
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return False
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@classmethod
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def get_wrapper(cls):
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return TextWrapper(width=79)
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@fields.depends('message')
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def on_change_with_message_wrapped(self, name=None):
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wrapper = self.get_wrapper()
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message = self.message or ''
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return '\n'.join(map(wrapper.fill, message.splitlines()))
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@classmethod
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def get_unread(cls, ids, name):
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pool = Pool()
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Read = pool.get('ir.note.read')
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cursor = Transaction().connection.cursor()
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user_id = Transaction().user
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table = cls.__table__()
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read = Read.__table__()
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unread = {}
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for sub_ids in grouped_slice(ids):
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where = reduce_ids(table.id, sub_ids)
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query = table.join(read, 'LEFT',
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condition=(table.id == read.note)
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& (read.user == user_id)
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).select(table.id,
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Case((read.user != Null, False), else_=True),
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where=where)
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cursor.execute(*query)
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unread.update(cursor.fetchall())
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return unread
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@classmethod
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def search_unread(cls, name, clause):
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pool = Pool()
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Read = pool.get('ir.note.read')
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user_id = Transaction().user
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table = cls.__table__()
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read = Read.__table__()
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_, operator, value = clause
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assert operator in ['=', '!=']
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Operator = fields.SQL_OPERATORS[operator]
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where = Operator(Case((read.user != Null, False), else_=True), value)
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query = table.join(read, 'LEFT',
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condition=(table.id == read.note)
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& (read.user == user_id)
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).select(table.id, where=where)
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return [('id', 'in', query)]
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@classmethod
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def set_unread(cls, notes, name, value):
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pool = Pool()
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Read = pool.get('ir.note.read')
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user_id = Transaction().user
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if not value:
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Read.create([{'note': n.id, 'user': user_id} for n in notes])
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else:
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reads = []
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for sub_notes in grouped_slice(notes):
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reads += Read.search([
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('note', 'in', [n.id for n in sub_notes]),
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('user', '=', user_id),
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])
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Read.delete(reads)
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@classmethod
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def write(cls, notes, values, *args):
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# Avoid changing write meta data if only unread is set
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if args or values.keys() != ['unread']:
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super(Note, cls).write(notes, values, *args)
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else:
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# Check access write and clean cache
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ModelStorage.write(notes, values)
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cls.set_unread(notes, 'unread', values['unread'])
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class NoteRead(ModelSQL):
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"Note Read"
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__name__ = 'ir.note.read'
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note = fields.Many2One('ir.note', 'Note', required=True,
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ondelete='CASCADE')
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user = fields.Many2One('res.user', 'User', required=True,
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ondelete='CASCADE')
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