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# Generated by Django 3.1.13 on 2022-01-10 07:37
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from django.db import migrations, models
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from common.utils.timezone import as_current_tz
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def fill_ticket_serial_number(apps, schema_editor):
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Ticket = apps.get_model('tickets', 'Ticket')
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tickets = Ticket.objects.all().order_by('date_created')
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curr_day = '00000000'
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curr_num = 1
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print(f'\n\tFill ticket serial number ... ')
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for ticket in tickets:
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# 跑这个脚本的时候，所有 ticket.serial_num == null
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date_created = as_current_tz(ticket.date_created)
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date_str = date_created.strftime('%Y%m%d')
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if date_str != curr_day:
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curr_day = date_str
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curr_num = 1
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ticket.serial_num = curr_day + '%04d' % curr_num
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curr_num += 1
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Ticket.objects.bulk_update(tickets, fields=('serial_num',))
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class Migration(migrations.Migration):
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dependencies = [
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('tickets', '0012_ticketsession'),
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]
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operations = [
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migrations.AddField(
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model_name='ticket',
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name='serial_num',
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field=models.CharField(max_length=128, null=True, unique=True, verbose_name='Serial number'),
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),
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migrations.RunPython(fill_ticket_serial_number),
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]
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