535 lines
21 KiB
Python
535 lines
21 KiB
Python
"""打印服务：单据上下文构建 + 默认模板 + 整页 HTML 输出。"""
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from __future__ import annotations
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from datetime import datetime
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from decimal import Decimal
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from django.utils import timezone
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from django.utils.html import escape
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from apps.core.base_models import TenantScopedModel
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from .models import PrintSettings, PrintTemplate
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from .renderer import render_template
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# ============================================================
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# 上下文构建
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# ============================================================
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def _line_ctx(line, *, index: int) -> dict:
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product = line.product
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unit = line.source_unit or product.base_unit
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# 出库单的行带 FEFO 分摊明细（batch_detail），进货单行直接带批次号
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batch_no = getattr(line, "batch_no", "") or ""
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batch_text = batch_no
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movement_batches = _movement_batches(line)
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if movement_batches:
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batch_text = "／".join(movement_batches)
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return {
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"index": index + 1,
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"product_code": product.code,
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"product_name": product.name,
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"spec": product.spec,
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"quantity": line.quantity,
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"source_quantity": line.source_quantity if line.source_quantity is not None else line.quantity,
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"unit_name": unit.name if unit else "",
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"unit_price": line.unit_price,
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"amount": line.amount,
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"batch_no": batch_text,
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"has_batch": bool(batch_text),
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"is_batch_managed": bool(getattr(product, "is_batch_managed", False)),
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}
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def _movement_batches(line) -> list:
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"""从该行商品对应的最新出库流水里取批次分摊明细（销售单打印批次列用）。"""
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bill = getattr(line, "bill", None)
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if bill is None or not getattr(bill, "bill_no", ""):
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return []
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from apps.inventory.models import StockMovement
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mv = (
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StockMovement.objects.filter(
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tenant=bill.tenant, source_ref=bill.bill_no, product_id=line.product_id,
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)
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.exclude(batch_detail=[])
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.order_by("-id")
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.first()
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)
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if mv is None or not mv.batch_detail:
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return []
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return [str(b.get("batch_no") or "") for b in mv.batch_detail]
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def sales_bill_context(bill) -> dict:
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from apps.printing.models import PrintSettings
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settings_obj = PrintSettings.objects.filter(tenant=bill.tenant).first()
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lines = [_line_ctx(ln, index=i) for i, ln in enumerate(bill.lines.select_related(
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"product", "product__base_unit", "source_unit").all())]
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total_amount = bill.total_amount or Decimal("0")
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round_off = getattr(bill, "round_off", None) or Decimal("0")
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return {
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"company": {
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"name": settings_obj.company_name if settings_obj else "",
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"phone": settings_obj.phone if settings_obj else "",
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"address": settings_obj.address if settings_obj else "",
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"bank_info": settings_obj.bank_info if settings_obj else "",
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"footer_note": settings_obj.footer_note if settings_obj else "",
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},
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"bill": {
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"bill_no": bill.bill_no,
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"bill_date": bill.bill_date.isoformat(),
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"state": bill.state,
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"remark": bill.remark,
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"amount": total_amount,
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"round_off": round_off,
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},
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"customer": {
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"code": bill.customer.code,
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"name": bill.customer.name,
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"phone": bill.customer.phone,
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"address": bill.customer.address,
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"tax_number": bill.customer.tax_number,
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},
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"warehouse": {"code": bill.warehouse.code, "name": bill.warehouse.name},
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"lines": lines,
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"has_batch_lines": any(l["has_batch"] for l in lines),
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"totals": {
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"count": len(lines),
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"quantity": sum(l["quantity"] for l in lines),
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"amount": total_amount + round_off,
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"round_off": round_off,
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"net_amount": total_amount,
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},
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"statement_qr": _statement_qr(bill),
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"printed_at": timezone.localtime().strftime("%Y-%m-%d %H:%M"),
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}
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def _statement_qr(bill):
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"""销售单尾部的对账单二维码（D5）。失败/无客户时返回 None（模板自动跳过）。"""
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try:
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from .qr import statement_qr_context
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return statement_qr_context(bill.tenant, bill.customer)
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except Exception:
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return None
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def purchase_bill_context(bill) -> dict:
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settings_obj = PrintSettings.objects.filter(tenant=bill.tenant).first()
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lines = [_line_ctx(ln, index=i) for i, ln in enumerate(bill.lines.select_related(
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"product", "product__base_unit", "source_unit").all())]
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return {
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"company": {
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"name": settings_obj.company_name if settings_obj else "",
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"phone": settings_obj.phone if settings_obj else "",
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"address": settings_obj.address if settings_obj else "",
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"bank_info": settings_obj.bank_info if settings_obj else "",
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"footer_note": settings_obj.footer_note if settings_obj else "",
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},
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"bill": {
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"bill_no": bill.bill_no,
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"bill_date": bill.bill_date.isoformat(),
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"state": bill.state,
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"remark": bill.remark,
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"amount": bill.total_amount or Decimal("0"),
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"round_off": getattr(bill, "round_off", None) or Decimal("0"),
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},
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"supplier": {
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"code": bill.supplier.code,
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"name": bill.supplier.name,
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"phone": bill.supplier.phone,
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"address": bill.supplier.address,
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},
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"warehouse": {"code": bill.warehouse.code, "name": bill.warehouse.name},
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"lines": lines,
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"has_batch_lines": any(l["has_batch"] for l in lines),
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"totals": {
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"count": len(lines),
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"quantity": sum(l["quantity"] for l in lines),
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"amount": bill.total_amount or Decimal("0"),
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"round_off": Decimal("0"),
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"net_amount": bill.total_amount or Decimal("0"),
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},
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"printed_at": timezone.localtime().strftime("%Y-%m-%d %H:%M"),
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}
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DOC_CONTEXT_BUILDERS = {
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"sales_bill": ("apps.sales.models", "SalesBill", sales_bill_context),
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"purchase_bill": ("apps.purchase.models", "PurchaseBill", purchase_bill_context),
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}
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# ============================================================
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# 默认模板
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# ============================================================
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SALES_BILL_DEFAULT = """
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<div class="doc-head">
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<h1>{{company.name}}</h1>
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<div class="sub">电话：{{company.phone}} 地址：{{company.address}}</div>
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<h2>销 售 单</h2>
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</div>
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<table class="meta">
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<tr><td>单号：{{bill.bill_no}}</td><td>日期：{{bill.bill_date}}</td><td>仓库：{{warehouse.name}}</td></tr>
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<tr><td>客户：{{customer.name}}</td><td>电话：{{customer.phone}}</td><td>打印时间：{{printed_at}}</td></tr>
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</table>
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<table class="lines">
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<thead><tr><th>#</th><th>编码</th><th>品名</th><th>单位</th><th>数量</th><th>单价</th><th>金额</th>{{#if has_batch_lines}}<th>批次号</th>{{/if}}</tr></thead>
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<tbody>
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{{#each lines}}
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<tr><td>{{item.index}}</td><td>{{item.product_code}}</td><td>{{item.product_name}} {{item.spec}}</td><td>{{item.unit_name}}</td><td>{{item.source_quantity}}</td><td>{{item.unit_price}}</td><td>{{item.amount}}</td>{{#if item.has_batch}}<td>{{item.batch_no}}</td>{{/if}}</tr>
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{{/each}}
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</tbody>
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<tfoot>
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<tr><td colspan="4">合计：{{totals.count}} 行 / 数量 {{totals.quantity}}</td><td colspan="2">抹零优惠</td><td>{{totals.round_off}}</td>{{#if has_batch_lines}}<td></td>{{/if}}</tr>
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<tr><td colspan="6" class="strong">应收合计（元）</td><td class="strong">{{totals.net_amount}}</td>{{#if has_batch_lines}}<td></td>{{/if}}</tr>
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</tfoot>
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</table>
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<div class="sign">
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<span>制单：__________</span><span>送货人：__________</span><span>客户签收：__________</span>
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</div>
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<div class="remark">备注：{{bill.remark}}</div>
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{{#if statement_qr}}<div class="qr-block">
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<img class="qr-img" src="{{statement_qr.data_uri}}" alt="对账单二维码">
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<div class="qr-tip">{{statement_qr.tip}}</div>
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</div>{{/if}}
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<div class="foot">{{company.footer_note}} 开户/账号：{{company.bank_info}}</div>
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"""
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PURCHASE_BILL_DEFAULT = """
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<div class="doc-head">
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<h1>{{company.name}}</h1>
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<div class="sub">电话：{{company.phone}} 地址：{{company.address}}</div>
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<h2>进 货 单</h2>
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</div>
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<table class="meta">
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<tr><td>单号：{{bill.bill_no}}</td><td>日期：{{bill.bill_date}}</td><td>仓库：{{warehouse.name}}</td></tr>
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<tr><td>供应商：{{supplier.name}}</td><td>电话：{{supplier.phone}}</td><td>打印时间：{{printed_at}}</td></tr>
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</table>
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<table class="lines">
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<thead><tr><th>#</th><th>编码</th><th>品名</th><th>单位</th><th>数量</th><th>单价</th><th>金额</th>{{#if has_batch_lines}}<th>批次号</th>{{/if}}</tr></thead>
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<tbody>
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{{#each lines}}
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<tr><td>{{item.index}}</td><td>{{item.product_code}}</td><td>{{item.product_name}} {{item.spec}}</td><td>{{item.unit_name}}</td><td>{{item.source_quantity}}</td><td>{{item.unit_price}}</td><td>{{item.amount}}</td>{{#if item.has_batch}}<td>{{item.batch_no}}</td>{{/if}}</tr>
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{{/each}}
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</tbody>
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<tfoot>
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<tr><td colspan="4">合计：{{totals.count}} 行 / 数量 {{totals.quantity}}</td><td colspan="{{#if has_batch_lines}}4{{else}}3{{/if}}" class="strong">应付合计（元）：{{totals.net_amount}}</td></tr>
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</tfoot>
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</table>
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<div class="sign">
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<span>制单：__________</span><span>验收人：__________</span><span>供应商签收：__________</span>
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</div>
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<div class="foot">{{company.footer_note}}</div>
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"""
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SALES_RECEIPT_58 = """
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<div class="r-head">
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<h1>{{company.name}}</h1>
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<div class="sub">{{company.phone}}</div>
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</div>
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<div class="r-title">销 售 单</div>
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<div class="r-meta">
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单号：{{bill.bill_no}}<br>
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日期：{{bill.bill_date}}<br>
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客户：{{customer.name}}<br>
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仓库：{{warehouse.name}}
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</div>
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<table class="r-lines">
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<thead>
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<tr><th>品名</th><th class="num">数量</th><th class="num">单价</th><th class="num">金额</th></tr>
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</thead>
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<tbody>
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{{#each lines}}
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<tr>
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<td>{{item.product_name}}</td>
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<td class="num">{{item.source_quantity}}{{item.unit_name}}</td>
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<td class="num">{{item.unit_price}}</td>
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<td class="num">{{item.amount}}</td>
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</tr>
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{{/each}}
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</tbody>
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</table>
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<div class="r-total">
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共 {{totals.count}} 行{{#if totals.round_off}} 抹零 {{totals.round_off}}{{/if}}<br>
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应收合计：<span class="big">¥{{totals.net_amount}}</span>
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</div>
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<div class="r-foot">
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{{company.footer_note}}<br>
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打印时间 {{printed_at}}
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</div>
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"""
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# 三联送货单模板
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SALES_TRIPLICATE = """
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<div class="tpl-page">
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{{#each slips}}
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<div class="tpl-slip">
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<div class="slip-tag">{{item.tag}}</div>
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<h1>{{item.company_name}}</h1>
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<h2>送 货 单</h2>
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<table class="meta">
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<tr><td>单号：{{item.bill_no}}</td><td>日期：{{item.bill_date}}</td></tr>
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<tr><td>客户：{{item.customer_name}}</td><td>电话：{{item.customer_phone}}</td></tr>
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<tr><td colspan="2">地址：{{item.customer_address}}</td></tr>
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</table>
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<table class="lines">
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<thead><tr><th>品名</th><th>数量</th><th>单价</th><th>金额</th></tr></thead>
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<tbody>{{item.lines_html}}</tbody>
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</table>
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<div style="margin-top:6px;font-size:12px">
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合计（元）：<b>{{item.net_amount}}</b>
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</div>
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<div class="sign">
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<span>送货人：______</span><span>客户签收：______</span>
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</div>
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</div>
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{{/each}}
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</div>
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"""
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DEFAULT_TEMPLATES = {
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"sales_bill": [
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("xs-default", "销售单（默认）", SALES_BILL_DEFAULT),
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("xs-receipt-58", "销售小票（58mm 热敏）", SALES_RECEIPT_58),
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("xs-triplicate", "三联送货单（A4 横向）", SALES_TRIPLICATE),
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],
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"purchase_bill": [("cg-default", "进货单（默认）", PURCHASE_BILL_DEFAULT)],
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}
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# 模板 → 版式（决定用哪个 HTML 外壳，以及是否横排）
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TEMPLATE_SHELL = {
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"xs-receipt-58": "receipt",
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"xs-triplicate": "triplicate",
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}
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def ensure_default_templates(tenant) -> int:
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"""幂等创建租户默认模板（is_default=True）。返回新建数量。"""
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created = 0
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for doc_type, templates in DEFAULT_TEMPLATES.items():
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for code, name, body in templates:
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_, was_created = PrintTemplate.objects.get_or_create(
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tenant=tenant, code=code,
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defaults={
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"name": name, "doc_type": doc_type,
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"body_html": body, "is_default": True,
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},
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)
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created += 1 if was_created else 0
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return created
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def ensure_settings(tenant) -> PrintSettings:
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obj = PrintSettings.objects.filter(tenant=tenant).first()
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if obj is None:
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obj = PrintSettings.objects.create(
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tenant=tenant, company_name=f"{tenant.name}"
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)
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return obj
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# ============================================================
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# 渲染输出
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# ============================================================
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RECEIPT_SHELL = """<!DOCTYPE html>
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<html lang="zh-CN">
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<head>
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<meta charset="utf-8">
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<title>{title}</title>
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<style>
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@page {{ size: 58mm auto; margin: 3mm 2mm; }}
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* {{ box-sizing: border-box; }}
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body {{ font-family: "Microsoft YaHei", "SimSun", monospace; font-size: 12px;
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color: #000; margin: 0; width: 54mm; }}
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.r-head {{ text-align: center; }}
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.r-head h1 {{ margin: 0 0 2px; font-size: 15px; }}
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.r-head .sub {{ font-size: 10px; }}
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.r-title {{ text-align: center; font-size: 14px; font-weight: 700;
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margin: 6px 0; letter-spacing: 2px; }}
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.r-meta {{ font-size: 11px; line-height: 1.5; border-bottom: 1px dashed #000;
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padding-bottom: 4px; }}
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.r-lines {{ width: 100%; border-collapse: collapse; margin-top: 4px; font-size: 11px; }}
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.r-lines th {{ border-bottom: 1px solid #000; text-align: left; padding: 2px 0; }}
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.r-lines td {{ padding: 2px 0; vertical-align: top; }}
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.r-lines td.num, .r-lines th.num {{ text-align: right; }}
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.r-total {{ border-top: 1px dashed #000; margin-top: 4px; padding-top: 4px;
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font-size: 12px; }}
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.r-total .big {{ font-size: 15px; font-weight: 700; }}
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.r-foot {{ text-align: center; font-size: 10px; margin-top: 8px;
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border-top: 1px dashed #000; padding-top: 4px; }}
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.noprint {{ margin: 6px 0; }}
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.noprint button {{ width: 100%; padding: 6px; }}
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@media print {{ .noprint {{ display: none; }} }}
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</style>
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</head>
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<body>
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<div class="noprint"><button onclick="window.print()">打 印</button></div>
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{body}
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{script}
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</body>
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</html>"""
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# 三联送货单：A4 横排三份（存根/客户/财务）
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TRIPLICATE_SHELL = """<!DOCTYPE html>
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<html lang="zh-CN">
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<head>
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<meta charset="utf-8">
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<title>{title}</title>
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<style>
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@page {{ size: A4 landscape; margin: 8mm; }}
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* {{ box-sizing: border-box; }}
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body {{ font-family: "Microsoft YaHei", "SimSun", sans-serif; font-size: 12px;
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color: #111; margin: 0; }}
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.tpl-page {{ display: flex; gap: 6mm; }}
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.tpl-slip {{ flex: 1; border: 1px solid #333; padding: 5mm 4mm;
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display: flex; flex-direction: column; }}
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.tpl-slip .slip-tag {{ text-align: right; font-size: 11px; color: #444; }}
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.tpl-slip h1 {{ margin: 0 0 2px; font-size: 15px; text-align: center; }}
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.tpl-slip h2 {{ margin: 2px 0 8px; font-size: 14px; text-align: center;
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letter-spacing: 4px; }}
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.tpl-slip table {{ width: 100%; border-collapse: collapse; }}
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.tpl-slip .lines th, .tpl-slip .lines td {{ border: 1px solid #333;
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padding: 2px 3px; font-size: 11px; }}
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.tpl-slip .meta td {{ padding: 1px 2px; font-size: 11px; }}
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.tpl-slip .sign {{ margin-top: auto; padding-top: 10px; font-size: 11px;
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display: flex; justify-content: space-between; }}
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.noprint {{ margin: 8px 0; }}
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@media print {{ .noprint {{ display: none; }} }}
|
||
</style>
|
||
</head>
|
||
<body>
|
||
<div class="noprint"><button onclick="window.print()">打 印（三联）</button></div>
|
||
{body}
|
||
{script}
|
||
</body>
|
||
</html>"""
|
||
|
||
PAGE_SHELL = """<!DOCTYPE html>
|
||
<html lang="zh-CN">
|
||
<head>
|
||
<meta charset="utf-8">
|
||
<title>{title}</title>
|
||
<style>
|
||
@page {{ size: {paper} portrait; margin: 12mm 10mm; }}
|
||
* {{ box-sizing: border-box; }}
|
||
body {{ font-family: "Microsoft YaHei", "SimSun", sans-serif; font-size: 13px; color: #111; margin: 0; }}
|
||
.doc-head {{ text-align: center; }}
|
||
.doc-head h1 {{ margin: 0 0 2px; font-size: 20px; }}
|
||
.doc-head h2 {{ margin: 6px 0 10px; font-size: 17px; letter-spacing: 8px; }}
|
||
.doc-head .sub {{ color: #444; font-size: 12px; }}
|
||
table {{ width: 100%; border-collapse: collapse; margin-top: 6px; }}
|
||
.meta td {{ padding: 2px 4px; border: none; }}
|
||
.lines th, .lines td {{ border: 1px solid #333; padding: 4px 6px; text-align: left; }}
|
||
.lines th {{ background: #f2f2f2; }}
|
||
.lines tfoot td {{ border: 1px solid #333; font-size: 13px; }}
|
||
.strong {{ font-weight: 700; font-size: 15px; }}
|
||
.sign {{ margin-top: 22px; display: flex; justify-content: space-between; }}
|
||
.remark {{ margin-top: 10px; white-space: pre-wrap; }}
|
||
.foot {{ margin-top: 14px; color: #555; font-size: 12px; border-top: 1px dashed #999; padding-top: 6px; }}
|
||
.qr-block {{ margin-top: 12px; text-align: center; }}
|
||
.qr-img {{ width: 88px; height: 88px; }}
|
||
.qr-tip {{ font-size: 11px; color: #555; margin-top: 2px; }}
|
||
.noprint {{ margin: 10px 0; }}
|
||
@media print {{ .noprint {{ display: none; }} }}
|
||
</style>
|
||
</head>
|
||
<body>
|
||
<div class="noprint"><button onclick="window.print()">打 印</button></div>
|
||
{body}
|
||
{script}
|
||
</body>
|
||
</html>"""
|
||
|
||
AUTO_PRINT_SCRIPT = '<script>window.addEventListener("load", function(){ window.print(); });</script>'
|
||
|
||
|
||
def render_document(*, tenant, doc_type: str, document, template_code: str = "",
|
||
autoprint: bool = True) -> str:
|
||
"""渲染整页可打印 HTML。
|
||
|
||
template_code 为空时取该 doc_type 的 is_default 模板（无则用内置默认并落库）。
|
||
"""
|
||
from django.apps import apps as django_apps
|
||
|
||
ensure_default_templates(tenant)
|
||
ensure_settings(tenant)
|
||
|
||
if template_code:
|
||
tpl = PrintTemplate.objects.get(tenant=tenant, code=template_code, doc_type=doc_type)
|
||
else:
|
||
tpl = PrintTemplate.objects.filter(
|
||
tenant=tenant, doc_type=doc_type, is_default=True
|
||
).first()
|
||
if tpl is None:
|
||
code, name, body = DEFAULT_TEMPLATES[doc_type][0]
|
||
tpl = PrintTemplate.objects.create(
|
||
tenant=tenant, code=code, name=name,
|
||
doc_type=doc_type, body_html=body, is_default=True,
|
||
)
|
||
|
||
builder = DOC_CONTEXT_BUILDERS[doc_type][2]
|
||
ctx = builder(document)
|
||
|
||
# 版式选择（D5）：模板 code 决定外壳；未登记的走标准 A4
|
||
shell_kind = TEMPLATE_SHELL.get(tpl.code, "page")
|
||
if shell_kind == "triplicate":
|
||
ctx = _triplicate_context(ctx, document)
|
||
body = render_template(tpl.body_html, ctx)
|
||
script = AUTO_PRINT_SCRIPT if autoprint else ""
|
||
title = escape(f"{tpl.name} {document.bill_no}")
|
||
|
||
if shell_kind == "receipt":
|
||
return RECEIPT_SHELL.format(title=title, body=body, script=script)
|
||
if shell_kind == "triplicate":
|
||
return TRIPLICATE_SHELL.format(title=title, body=body, script=script)
|
||
|
||
paper = "A4" if tpl.paper_size == "A4" else tpl.paper_size
|
||
return PAGE_SHELL.format(
|
||
title=title, paper=paper, body=body, script=script,
|
||
)
|
||
|
||
|
||
def _line_rows_html(lines: list) -> str:
|
||
"""把行渲染成 <tr> 串（含转义）。
|
||
|
||
三联模板是"循环套循环"，而渲染器的 `item` 只能表示一层——内层再用 item
|
||
会被外层覆盖。这里在 Python 侧先把行拼好，模板里只留一层循环。
|
||
"""
|
||
from django.utils.html import escape as _esc
|
||
|
||
rows = []
|
||
for ln in lines:
|
||
rows.append(
|
||
"<tr><td>{name}</td><td>{qty}{unit}</td><td>{price}</td><td>{amount}</td></tr>".format(
|
||
name=_esc(str(ln.get("product_name", ""))),
|
||
qty=_esc(str(ln.get("source_quantity", ""))),
|
||
unit=_esc(str(ln.get("unit_name", ""))),
|
||
price=_esc(str(ln.get("unit_price", ""))),
|
||
amount=_esc(str(ln.get("amount", ""))),
|
||
)
|
||
)
|
||
return "".join(rows)
|
||
|
||
|
||
def _triplicate_context(ctx: dict, document) -> dict:
|
||
"""三联送货单上下文：把同一份单据复制成三份，各带标签（存根/客户/送货）。"""
|
||
base = {
|
||
"company_name": (ctx.get("company") or {}).get("name", ""),
|
||
"bill_no": (ctx.get("bill") or {}).get("bill_no", ""),
|
||
"bill_date": (ctx.get("bill") or {}).get("bill_date", ""),
|
||
"customer_name": (ctx.get("customer") or {}).get("name", ""),
|
||
"customer_phone": (ctx.get("customer") or {}).get("phone", ""),
|
||
"customer_address": (ctx.get("customer") or {}).get("address", ""),
|
||
"lines_html": _line_rows_html(ctx.get("lines") or []),
|
||
"net_amount": (ctx.get("totals") or {}).get("net_amount", ""),
|
||
}
|
||
slips = [{"tag": tag, **base} for tag in ("① 存根联", "② 客户联", "③ 财务联")]
|
||
return {**ctx, "slips": slips}
|