iterable_orm 0.4

基本用法

将对象或字典列表传递给queryset

fromiterable_ormimportQuerySetAccounts=[Alistofaccountobjectsthathaveattrubtessuchasname,email,age,genderect]manager=Queryset(Accounts)

过滤和排除

可以按值或查找筛选和排除数据，例如gt、gte、lt、lte、startswith、istartswith、endswith、contains、icontains、value-in、value-not-in、value-range、date-range（需要datetime对象）或匿名函数。

iterable\u orm还允许您使用标准的双下划线符号来分隔相关字段来筛选相关对象，例如manager.filter（parent\u name='john'），此筛选器按parent.child='john'。

所有的过滤和exlcuding都是惰性的，因此您可以构造任意数量的过滤，它只在迭代、调用count、first、last和order_by时计算。

下面是过滤和排除的代码示例，

fromiterable_ormimportQuerySetAccounts=[Alistofaccountobjectsthathaveattrubtessuchasname,email,age,genderect]manager=Queryset(Accounts)# Filter accounts with age greater than 25 and exclude if gender is maledata=manager.filter(age__gt=20).exclude(gender='male')# Filter using lamdadata=manager.filter(age=lambdax:x>=20andx<=30).exclude(gender='male')# Filter accounts with the name starting with letter 's' and gender is femaledata=manager.filter(name__istartswith='s').exclude(gender='female')# Filter accounts who have registred from 2014 till 2016 of current date and who are a femaledata=manager.filter(registered__date_range=(datetime.today().replace(year=2014),datetime.today().replace(year=2016))).exclude(gender='female')# Filter accounts who have registred from 01-01-2015 till 2016 and who are a female if date is string objectdata=manager.filter(registered__date_range=('01-01-2015','01-01-2016')).exclude(gender='female')

过滤

可以按值或查找（如gt、gte等）筛选数据。

下面是过滤的代码示例，

fromiterable_ormimportQuerySetAccounts=[Alistofaccountobjectsthathaveattrubtessuchasname,email,age,genderect]manager=Queryset(Accounts)# Filter accounts with age greater that 25data=manager.filter(age__gt=20)# Filter accounts with age less that 25 and who are a maledata=manager.filter(age__lt=20,gender='male')# Get number of accounts with age 20 and who are a femaledata=manager.filter(age__gt=20,gender='female').count()# Filter accounts with name starting with letter 's'data=manager.filter(name__istartswith='s')# Filter accounts who have registred from 01-01-2015 till 2016data=manager.filter(registered__date_range=('01-01-2015','01-01-2016'))# Filter accounts who have friends who are a maledata=manager.filter(friends__gender='male')# Filter accounts with date rangedata=manager.filter(registered__value_range=('2015-11-15','2015-11-16')# chain filter e.gdata=manager.filter(name__istartswith='s').filter(gender='male')

不包括

可以按值或查找（如gt、gte等）排除数据。 下面是exlcude函数的代码示例：

fromiterable_ormimportQuerySetAccounts=[Alistofaccountobjectsthathaveattrubtessuchasname,email,age,genderect]manager=Queryset(Accounts)# Exclude accounts with age greater that 25data=manager.exclude(age__gt=20)# Exclude accounts with age less then 25 and who are a maledata=manager.exclude(age__lt=20,gender='male')# Exclude accounts with name starting with letter 's'data=manager.filter(name__istartswith='s')# Exclude accounts who have registred from 01-01-2015 till 2016data=manager.exclude(registered__date_range=('01-01-2015','01-01-2016'))# Exclude accounts who have friends who are a maledata=manager.filter(friends__gender='male')# Chain exclude e.g.data=manager.exclude(name__istartswith='s').exclude(gender='male')

订购

您可以按对象或字典的任何值排序数据：

fromiterable_ormimportQuerySetAccounts=[Alistofaccountobjectsthathaveattrubtessuchasname,email,age,genderect]manager=Queryset(Accounts)# Order by namedata=manager.order_by('name)# Order name by descendingdata=manager.order_by('-name)# Ordering by related lookup of friends namedata=manager.order_by('friends__name')# Ordering by related lookup of friends name descendingdata=manager.order_by('-friends__name')

单元测试

单元测试包括api的完整示例用法

运行单元测试：

pythontest.py

兼容性

python 2.7、3.0到3.5