django admin 导出数据简单示例

借鉴博客：https://www.lijinlong.cc/django/djxs/2101.html

具体代码实现：

class TipReport(admin.ModelAdmin):
    actions = ['saveexcel']
    list_display = ('tiptype', 'enabled', 'get_tag','get_content')
    search_fields = ('get_tag', 'tiptype')
    list_per_page = 500

    def get_tag(self, obj):
        if obj.tags.all():
            tag_list = [i.name for i in obj.tags.all()]
            return ','.join(tag_list)
        else:
            return '-'

    get_tag.short_description = '小贴士标签'

    def get_content(self, obj):
        if obj.content:
            return obj.content
        elif obj.image:
            return mark_safe('<a href="%s">%s</a>' % (obj.image.url, obj.image.url))
        else:
            return '-'

    get_content.short_description = '内容'

    def saveexcel(self, request, queryset):
        Begin = xlwt.Workbook()
        sheet = Begin.add_sheet('小贴士记录')
        cols = 0
        for query in queryset:
            sheet.write(cols, 0, str(query.tiptype))
            sheet.write(cols, 1, str(query.enabled))
            # for i in unicode(query.tags.all()):
            sheet.write(cols, 2, unicode(query.tags.all()))
            print type(query.content)
            sheet.write(cols, 3, unicode(query.content))

            cols += 1

        Begin.save('{}'.format("result.xls"))
        def file_iterator(filename, chuck_size=512):
            with open(filename, 'rb') as f :
                while True:
                    c = f.read(chuck_size)
                    if c:
                        yield c
                    else:
                        break
        response = StreamingHttpResponse(file_iterator('{}'.format("result.xls")))
        response['Content-Type'] = 'application/octet-stream'
        response['Content-Disposition'] = 'attachment;filename="{}"'.format("result.xls")
        return response
    saveexcel.short_description = '导出数据'
admin.site.register(Tip, TipReport)