182 lines
6.7 KiB
Python
182 lines
6.7 KiB
Python
import json
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import os
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import urllib.parse
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import openpyxl
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from openpyxl.utils import get_column_letter
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from openpyxl.worksheet.datavalidation import DataValidation
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from django.apps import apps
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from django.core.exceptions import ValidationError
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from openpyxl import load_workbook
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from django.conf import settings
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from django.contrib.auth.decorators import login_required
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from django.contrib.staticfiles import finders
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from django.core.files.storage import default_storage
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from django.http import FileResponse, HttpResponseNotFound, JsonResponse
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from django.views.decorators.csrf import csrf_exempt, csrf_protect
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from rest_framework.decorators import api_view
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from rest_framework.serializers import ModelSerializer
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@login_required
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def download_excel_template(request, template_name, fields):
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"""
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该视图提供下载指定的Excel模板文件。
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参数:
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request: HttpRequest对象。
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template_name: 请求下载的Excel模板文件的名称，期望是一个字符串。
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fields: 包含字段信息的字典，用于生成Excel文件的表头和格式。
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返回:
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FileResponse对象，允许用户下载生成的Excel文件。
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如果文件未找到，则返回一个HttpResponseNotFound响应。
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"""
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fields = json.loads(urllib.parse.unquote(fields).replace("'", '"'))
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# 创建一个新的工作簿
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wb = openpyxl.Workbook()
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ws = wb.active
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# 设置表头行
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headers = [config['label'] for field, config in fields.items()]
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ws.append(headers)
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# 保存生成的Excel文件到指定路径
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static_dir = os.path.join(settings.BASE_DIR, 'static', 'excels')
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if not os.path.exists(static_dir):
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os.makedirs(static_dir)
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temp_file_path = os.path.join(static_dir, template_name)
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wb.save(temp_file_path)
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# 创建FileResponse对象，设置为以附件形式下载，设置MIME类型为Excel文件
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response = FileResponse(open(temp_file_path, 'rb'),
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content_type='application/vnd.openxmlformats-officedocument.spreadsheetml.sheet')
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response['Content-Disposition'] = f'attachment; filename="{urllib.parse.quote(template_name)}"'
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return response
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@csrf_protect
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@login_required
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def common_excel_parse(request):
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"""
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该函数用于解析上传的Excel文件并返回数据。
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Args:
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request: HTTP请求对象，包含上传的Excel文件。
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Returns:
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JsonResponse: 包含解析后的Excel数据的JSON响应，或包含错误消息的JSON响应。
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Raises:
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N/A
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"""
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# 如果是POST请求并且有上传的文件
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if request.method == 'POST' and request.FILES:
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# 获取上传的Excel文件
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excel_file = request.FILES.get('excel_file')
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# 如果没有提供文件，返回错误响应
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if not excel_file:
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return JsonResponse({'error': '请先选择文件。'}, status=400)
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# 获取fields_map和model_config
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fields_map = json.loads(request.POST.get('fields_map', '{}'))
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model_config = json.loads(request.POST.get('model_config', '{}'))
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# 动态获取模型
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try:
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model = apps.get_model(model_config['app_label'], model_config['model_name'])
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except (LookupError, KeyError):
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return JsonResponse({'error': '模型配置错误。'}, status=400)
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columns = list(fields_map.values())
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fields = list(fields_map.keys())
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# 保存文件到服务器
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file_name = default_storage.save(excel_file.name, excel_file)
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file_path = os.path.join(settings.MEDIA_ROOT, file_name)
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def create_dynamic_serializer(mod):
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class DynamicSerializer(ModelSerializer):
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class Meta:
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model = mod
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fields = '__all__'
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return DynamicSerializer
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try:
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# 打开并解析Excel文件
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workbook = load_workbook(file_path, data_only=True)
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sheet = workbook.active
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data = []
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# 读取第一行作为表头
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header_row = [cell.value for cell in sheet[1]]
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# 检查表头是否与fields_map的values对应
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if header_row != columns:
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return JsonResponse({'error': '表头不匹配，请使用正确的Excel上传模板。'}, status=400)
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for row in sheet.iter_rows(min_row=2, values_only=True):
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if not all(value is None for value in row):
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instance_data = dict(zip(fields, row))
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instance = model(**instance_data)
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try:
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instance.full_clean()
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data.append(instance)
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except ValidationError as e:
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return JsonResponse({'error': f'数据校验错误: {e.message_dict}'}, status=400)
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# 动态获取序列化器
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serializer_class = create_dynamic_serializer(model)
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serializer = serializer_class(data, many=True)
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# 清理，删除上传的文件
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os.remove(file_path)
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return JsonResponse(serializer.data, safe=False)
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except Exception as e:
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# 清理，删除上传的文件
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os.remove(file_path)
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return JsonResponse({'error': f'解析文件时出错: {str(e)}'}, status=500)
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return JsonResponse({'error': '请求错误'}, status=400)
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@csrf_protect
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@login_required
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def save_excel_table_data(request):
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if request.method == 'POST':
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try:
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data = json.loads(request.body)
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app_label = data.get('app_label')
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model_name = data.get('model_name')
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table_data = data.get('table_data')
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if not app_label or not model_name or not table_data:
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return JsonResponse({'error': '缺少必要的参数'}, status=400)
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Model = apps.get_model(app_label, model_name)
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for row_data in table_data:
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try:
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instance = Model(**row_data)
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instance.full_clean() # 验证数据
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instance.save()
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except ValidationError as e:
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return JsonResponse({'error': f'数据校验错误: {e.message_dict}'}, status=400)
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except Exception as e:
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return JsonResponse({'error': f'保存数据时出错: {str(e)}'}, status=500)
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return JsonResponse({'message': '表格数据保存成功'}, status=200)
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except json.JSONDecodeError:
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return JsonResponse({'error': '无效的JSON格式'}, status=400)
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except Exception as e:
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return JsonResponse({'error': f'服务器内部错误: {str(e)}'}, status=500)
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return JsonResponse({'error': '无效的请求方法'}, status=400)
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