forked from erp-dev/erp
126 lines
4.3 KiB
Python
126 lines
4.3 KiB
Python
"""
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Printing 模块信号处理函数
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监听 stateflow 信号，在流程完成时执行业务逻辑。
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"""
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import logging
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from decimal import Decimal, InvalidOperation
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from django.conf import settings
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from django.db import transaction
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logger = logging.getLogger(__name__)
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def on_printing_job_process_completed(sender, **kwargs):
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"""
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PrintingJob 流程完成时的处理
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当 PrintingJob 的工艺流程全部完成时，自动创建 SalesItem（销售品）。
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数量和单位从指定的流程节点参数中获取（通过 settings 配置）。
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配置项：
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PRINTING_SALES_ITEM_SOURCE_STATE_ID: 指定从哪个 State 获取参数
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PRINTING_SALES_ITEM_QUANTITY_KEY: 数量参数的 key
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PRINTING_SALES_ITEM_UNIT_KEY: 单位参数的 key
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Args:
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sender: PrintingJob 类
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content_object: PrintingJob 实例
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business_object: BusinessObject 实例
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last_completed_by: 最后步骤操作人
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其他参数见 stateflow.signals.process_completed
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"""
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from shipment.models import SalesItem, UnitChoices
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content_object = kwargs.get('content_object')
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business_object = kwargs.get('business_object')
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last_completed_by = kwargs.get('last_completed_by')
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if content_object is None or business_object is None:
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logger.warning('process_completed 信号缺少 content_object 或 business_object')
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return
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printing_job = content_object
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# 从 settings 获取配置
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source_state_id = getattr(settings, 'PRINTING_SALES_ITEM_SOURCE_STATE_ID', None)
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quantity_key = getattr(settings, 'PRINTING_SALES_ITEM_QUANTITY_KEY', '米数')
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if source_state_id is None:
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logger.debug(
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f'PrintingJob #{printing_job.id} 流程完成，'
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f'但 PRINTING_SALES_ITEM_SOURCE_STATE_ID 未配置，跳过销售品创建'
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)
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return
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# 从 business_object 的状态流转记录中找到指定 state_id 的记录
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state_log = business_object.state_logs.filter(
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state_id=source_state_id,
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is_cancelled=False
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).first()
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if state_log is None:
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logger.warning(
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f'PrintingJob #{printing_job.id} 流程完成，'
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f'但未找到 state_id={source_state_id} 的已完成记录，跳过销售品创建'
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)
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return
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# 获取参数汇总
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params = state_log.get_all_parameters_summary()
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# 获取数量
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quantity_raw = params.get(quantity_key)
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if quantity_raw is None:
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logger.warning(
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f'PrintingJob #{printing_job.id} 流程完成，'
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f'但 state_id={source_state_id} 的参数中缺少 {quantity_key}，跳过销售品创建'
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)
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return
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# 转换数量为 Decimal
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try:
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quantity = Decimal(str(quantity_raw))
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except (InvalidOperation, ValueError, TypeError) as e:
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logger.warning(
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f'PrintingJob #{printing_job.id} 流程完成，'
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f'但 {quantity_key}={quantity_raw} 无法转换为数字: {e}，跳过销售品创建'
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)
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return
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# 单位固定为"米"
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sales_unit = UnitChoices.METER
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# 获取产品名称
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product_name = printing_job.product.name if printing_job.product else '未知产品'
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# 获取客户ID（从主订单获取）
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customer_id = None
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if printing_job.printing_order and printing_job.printing_order.customer:
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customer_id = printing_job.printing_order.customer_id
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try:
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with transaction.atomic():
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sales_item = SalesItem.objects.create(
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shipment=None, # 暂不关联出货单，待后续分配
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name=product_name,
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quantity=quantity,
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unit=sales_unit,
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created_by=last_completed_by,
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printing_job_id=printing_job.id,
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customer_id=customer_id,
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)
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logger.info(
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f'PrintingJob #{printing_job.id} 流程完成，'
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f'已创建销售品 SalesItem #{sales_item.id}: '
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f'{product_name} x {quantity} {sales_item.get_unit_display()}'
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)
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except Exception as e:
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logger.error(
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f'PrintingJob #{printing_job.id} 流程完成后创建销售品失败: {e}',
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exc_info=True
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)
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