262 lines
10 KiB
Python
262 lines
10 KiB
Python
# -*- coding: utf-8 -*-
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from urllib.parse import quote
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from django.db import transaction
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from django.http import HttpResponse
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from openpyxl import Workbook
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from openpyxl.worksheet.datavalidation import DataValidation
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from openpyxl.utils import get_column_letter, quote_sheetname
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from openpyxl.worksheet.table import Table, TableStyleInfo
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from rest_framework.request import Request
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from dvadmin.utils.import_export import import_to_data
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from dvadmin.utils.json_response import DetailResponse
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from dvadmin.utils.request_util import get_verbose_name
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class ImportSerializerMixin:
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"""
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自定义导入模板、导入功能
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"""
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# 导入字段
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import_field_dict = {}
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# 导入序列化器
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import_serializer_class = None
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# 表格表头最大宽度，默认50个字符
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export_column_width = 50
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def is_number(self,num):
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try:
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float(num)
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return True
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except ValueError:
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pass
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try:
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import unicodedata
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unicodedata.numeric(num)
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return True
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except (TypeError, ValueError):
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pass
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return False
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def get_string_len(self, string):
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"""
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获取字符串最大长度
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:param string:
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:return:
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"""
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length = 4
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if string is None:
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return length
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if self.is_number(string):
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return length
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for char in string:
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length += 2.1 if ord(char) > 256 else 1
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return round(length, 1) if length <= self.export_column_width else self.export_column_width
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@transaction.atomic # Django 事务,防止出错
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def import_data(self, request: Request, *args, **kwargs):
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"""
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导入模板
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:param request:
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:param args:
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:param kwargs:
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:return:
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"""
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assert self.import_field_dict, "'%s' 请配置对应的导出模板字段。" % self.__class__.__name__
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# 导出模板
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if request.method == "GET":
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# 示例数据
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queryset = self.filter_queryset(self.get_queryset())
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# 导出excel 表
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response = HttpResponse(content_type="application/msexcel")
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response["Access-Control-Expose-Headers"] = f"Content-Disposition"
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response[
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"Content-Disposition"
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] = f'attachment;filename={quote(str(f"导入{get_verbose_name(queryset)}模板.xlsx"))}'
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wb = Workbook()
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ws1 = wb.create_sheet("data", 1)
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ws1.sheet_state = "hidden"
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ws = wb.active
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row = get_column_letter(len(self.import_field_dict) + 1)
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column = 10
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header_data = [
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"序号",
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]
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validation_data_dict = {}
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for index, ele in enumerate(self.import_field_dict.values()):
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if isinstance(ele, dict):
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header_data.append(ele.get("title"))
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choices = ele.get("choices", {})
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if choices.get("data"):
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data_list = []
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data_list.extend(choices.get("data").keys())
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validation_data_dict[ele.get("title")] = data_list
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elif choices.get("queryset") and choices.get("values_name"):
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data_list = choices.get("queryset").values_list(choices.get("values_name"), flat=True)
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validation_data_dict[ele.get("title")] = list(data_list)
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else:
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continue
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column_letter = get_column_letter(len(validation_data_dict))
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dv = DataValidation(
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type="list",
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formula1=f"{quote_sheetname('data')}!${column_letter}$2:${column_letter}${len(validation_data_dict[ele.get('title')]) + 1}",
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allow_blank=True,
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)
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ws.add_data_validation(dv)
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dv.add(f"{get_column_letter(index + 2)}2:{get_column_letter(index + 2)}1048576")
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else:
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header_data.append(ele)
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# 添加数据列
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ws1.append(list(validation_data_dict.keys()))
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for index, validation_data in enumerate(validation_data_dict.values()):
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for inx, ele in enumerate(validation_data):
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ws1[f"{get_column_letter(index + 1)}{inx + 2}"] = ele
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# 插入导出模板正式数据
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df_len_max = [self.get_string_len(ele) for ele in header_data]
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ws.append(header_data)
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# 更新列宽
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for index, width in enumerate(df_len_max):
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ws.column_dimensions[get_column_letter(index + 1)].width = width
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tab = Table(displayName="Table1", ref=f"A1:{row}{column}") # 名称管理器
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style = TableStyleInfo(
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name="TableStyleLight11",
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showFirstColumn=True,
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showLastColumn=True,
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showRowStripes=True,
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showColumnStripes=True,
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)
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tab.tableStyleInfo = style
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ws.add_table(tab)
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wb.save(response)
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return response
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updateSupport = request.data.get("updateSupport")
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# 从excel中组织对应的数据结构，然后使用序列化器保存
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queryset = self.filter_queryset(self.get_queryset())
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# 获取多对多字段
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m2m_fields = [
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ele.name
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for ele in queryset.model._meta.get_fields()
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if hasattr(ele, "many_to_many") and ele.many_to_many == True
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]
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data = import_to_data(request.data.get("url"), self.import_field_dict, m2m_fields)
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unique_list = [
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ele.name for ele in queryset.model._meta.get_fields() if hasattr(ele, "unique") and ele.unique == True
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]
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for ele in data:
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# 获取 unique 字段
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if queryset.model._meta.unique_together: # 判断是否存在联合主键
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filter_dic = {i: ele.get(i) for i in list(queryset.model._meta.unique_together[0])}
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else:
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filter_dic = {i: ele.get(i) for i in list(set(self.import_field_dict.keys()) & set(unique_list))}
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instance = filter_dic and queryset.filter(**filter_dic).first()
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if instance and not updateSupport:
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continue
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if not filter_dic:
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instance = None
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serializer = self.import_serializer_class(instance, data=ele, request=request)
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serializer.is_valid(raise_exception=True)
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serializer.save()
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return DetailResponse(msg=f"导入成功！")
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class ExportSerializerMixin:
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"""
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自定义导出功能
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"""
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# 导出字段
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export_field_label = []
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# 导出序列化器
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export_serializer_class = None
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# 表格表头最大宽度，默认50个字符
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export_column_width = 50
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def is_number(self,num):
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try:
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float(num)
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return True
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except ValueError:
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pass
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try:
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import unicodedata
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unicodedata.numeric(num)
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return True
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except (TypeError, ValueError):
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pass
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return False
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def get_string_len(self, string):
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"""
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获取字符串最大长度
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:param string:
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:return:
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"""
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length = 4
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if string is None:
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return length
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if self.is_number(string):
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return length
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for char in string:
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length += 2.1 if ord(char) > 256 else 1
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return round(length, 1) if length <= self.export_column_width else self.export_column_width
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def export_data(self, request: Request, *args, **kwargs):
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"""
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导出功能
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:param request:
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:param args:
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:param kwargs:
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:return:
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"""
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queryset = self.filter_queryset(self.get_queryset())
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assert self.export_field_label, "'%s' 请配置对应的导出模板字段。" % self.__class__.__name__
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assert self.export_serializer_class, "'%s' 请配置对应的导出序列化器。" % self.__class__.__name__
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data = self.export_serializer_class(queryset, many=True, request=request).data
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# 导出excel 表
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response = HttpResponse(content_type="application/msexcel")
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response["Access-Control-Expose-Headers"] = f"Content-Disposition"
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response["content-disposition"] = f'attachment;filename={quote(str(f"导出{get_verbose_name(queryset)}.xlsx"))}'
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wb = Workbook()
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ws = wb.active
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header_data = ["序号", *self.export_field_label.values()]
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hidden_header = ["#", *self.export_field_label.keys()]
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df_len_max = [self.get_string_len(ele) for ele in header_data]
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row = get_column_letter(len(self.export_field_label) + 1)
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column = 1
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ws.append(header_data)
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for index, results in enumerate(data):
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results_list = []
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for h_index, h_item in enumerate(hidden_header):
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for key,val in results.items():
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if key == h_item:
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if val is None or val=="":
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results_list.append("")
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else:
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results_list.append(val)
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# 计算最大列宽度
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result_column_width = self.get_string_len(val)
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if h_index !=0 and result_column_width > df_len_max[h_index]:
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df_len_max[h_index] = result_column_width
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ws.append([index + 1, *results_list])
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column += 1
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# 更新列宽
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for index, width in enumerate(df_len_max):
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ws.column_dimensions[get_column_letter(index + 1)].width = width
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tab = Table(displayName="Table", ref=f"A1:{row}{column}") # 名称管理器
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style = TableStyleInfo(
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name="TableStyleLight11",
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showFirstColumn=True,
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showLastColumn=True,
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showRowStripes=True,
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showColumnStripes=True,
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)
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tab.tableStyleInfo = style
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ws.add_table(tab)
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wb.save(response)
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return response
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