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Django import export實(shí)現(xiàn)數(shù)據(jù)庫(kù)導(dǎo)入導(dǎo)出方式

更新時(shí)間：2020年04月03日 08:36:58 作者：一天一點(diǎn)到

這篇文章主要介紹了Django import export實(shí)現(xiàn)數(shù)據(jù)庫(kù)導(dǎo)入導(dǎo)出方式，具有很好的參考價(jià)值，希望對(duì)大家有所幫助。一起跟隨小編過(guò)來(lái)看看吧

使用django-import-export庫(kù)，導(dǎo)入導(dǎo)出數(shù)據(jù)，支持csv、xls、json、html等格式

官網(wǎng)：http://django-import-export.readthedocs.io/en/latest/installation.html

1、安裝django-import-export

pip install django-import-export

2、配置settings.py

INSTALLED_APPS = (
 'django.contrib.admin',
 'django.contrib.auth',
 'django.contrib.contenttypes',
 'django.contrib.sessions',
 'django.contrib.messages',
 'django.contrib.staticfiles',
 'customer',
 'publisher',
 'import_export',
)

執(zhí)行命令: python manage.py collectstatic

3、models.py 建立model

class Author(models.Model):
 name = models.CharField(max_length=100)

 def __unicode__(self):
  return self.name


class Category(models.Model):
 name = models.CharField(max_length=100)

 def __unicode__(self):
  return self.name


class Book(models.Model):
 name = models.CharField('Book name', max_length=100)
 author = models.ForeignKey(Author, blank=True, null=True)
 author_email = models.EmailField('Author email', max_length=75, blank=True)
 imported = models.BooleanField(default=False)
 published = models.DateField('Published', blank=True, null=True)
 price = models.DecimalField(max_digits=10, decimal_places=2, null=True, blank=True)
 categories = models.ManyToManyField(Category, blank=True)

 def __unicode__(self):
  return self.name

4、在admin.py 創(chuàng)建Resource、對(duì)應(yīng)的Admin

from import_export import resources
from core.models import Book
from import_export.admin import ImportExportModelAdmin


class BookResource(resources.ModelResource):

 class Meta:
  model = Book
  export_order = ('id', 'name', 'author', 'author_email', 'imported', 'click', 'published', 'price', 'categories')

@admin.register(Book)
class BookAdmin(ImportExportModelAdmin):
 list_display = ('name', 'author', 'author_email', 'imported', 'published', 'price', 'categories')
 search_fields = ('name', 'author','published')
 date_hierarchy = 'date' 
 resource_class = BookResource

export_order：設(shè)置導(dǎo)出字段的順序

5、Django界面實(shí)現(xiàn)導(dǎo)入導(dǎo)出

自定義導(dǎo)出方式 action 這種方式也推薦

import xlwt
#導(dǎo)出Excel
from django.http import StreamingHttpResponse
class AdminReport(admin.ModelAdmin):
 actions = ["saveexecl"]     # 自定義的action（導(dǎo)出到excel表格）
 list_display = ("id",'offer','day_time', 'idfa', 'submit_result_text', 'callback_result_text') # 顯示的列
 search_fields = ('day_time','callback_result_text')  # 可以搜索的字段
 date_hierarchy = 'day_time'  # 按照日期顯示
 list_filter = ('offer',)   # 過(guò)濾條件
 list_per_page = 500    # 每頁(yè)顯示500條，太多了可能會(huì)出現(xiàn)服務(wù)器崩掉的情況
 
 def saveexecl(self,request,queryset):
  Begin = xlwt.Workbook()
  sheet = Begin.add_sheet("response")
  cols = 0
  for query in queryset:
   # you need write colms      # 好像有個(gè)方法可以一次性寫(xiě)入所有列，記不清了，只能用這種簡(jiǎn)單的方法去實(shí)現(xiàn)
   sheet.write(cols,1,str(query.idfa))  # 寫(xiě)入第一列
   sheet.write(cols,2,str(query.day_time)) # 寫(xiě)入第二列
   sheet.write(cols,3,str(query.keyword))  # 寫(xiě)入第三列
   cols += 1
  Begin.save("%s" %(filename))
  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(filename))
  response['Content-Type'] = 'application/octet-stream'
  response['Content-Disposition'] = 'attachment;filename="{}"'.format("result.xls")
  return response
 saveexecl.short_description = "導(dǎo)出Excel"   # 按鈕顯示名字


admin.site.register(Report, AdminReport)  # 注冊(cè)到admin

以上這篇Django import export實(shí)現(xiàn)數(shù)據(jù)庫(kù)導(dǎo)入導(dǎo)出方式就是小編分享給大家的全部?jī)?nèi)容了，希望能給大家一個(gè)參考，也希望大家多多支持腳本之家。

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