我使用最新的 django-piston 0.2.3rc1(但如果需要可能会降级)。
class MaintenanceHandler(CsrfExemptBaseHandler):
allowed_methods = ('GET', 'POST', 'PUT', 'DELETE')
anonymous = is_anonymous = True
model = Maintenance
fields = ('maintenance_id', 'maintenance_client', 'maintenance_house', 'maintenance_type', 'maintenance_tariff', 'maintenance_date', 'maintenance_active')
exclude = ()
def read(self, request, id=None):
base = Maintenance.objects
if id:
return base.get(pk=id)
else:
try:
result = base
filters_list = simplejson.loads(request.GET.get('filter', ''))
for item in filters_list:
if item['property'] == u'maintenanceActive':
result = result.filter(maintenance_active__exact=item['value'])
if item['property'] == u'maintenanceClient':
result = result.filter(maintenance_client__exact=item['value'])
if item['property'] == u'maintenanceType':
result = result.filter(maintenance_type__exact=item['value'])
if item['property'] == u'maintenanceTariff':
result = result.filter(maintenance_tariff__exact=item['value'])
except: # если фильтров нет или какая-нибудь ошибка
result = base.all()
if 'result' not in locals(): # если фильтр есть, но ничего не применилось (пустой или не те)
result = base.all()
if 'start' in request.GET or 'limit' in request.GET:
start = request.GET.get('start', 0)
limit = request.GET.get('limit', 1)
result = result[start:limit]
return result
作为 GET 请求的结果(例如/api/maintenance/8)，我看到:
{
"message": "Something good happened on the server!",
"data": {
"maintenance_type": {
"type_name": "домофон",
"type_active": true,
"type_id": 1
},
"maintenance_tariff": {
"tariff_id": 13,
"tariff_type": {
"type_name": "домофон",
"type_active": true,
"type_id": 1
},
"tariff_name": "домофон 1",
"tariff_value": "435.00",
"tariff_active": true
},
"maintenance_active": true,
"maintenance_date": "2011-09-20 00:00:00",
"maintenance_house": {
"house_street": "dasdasd",
"house_id": 3,
"house_number": 3,
"house_housing": 3,
"house_active": true,
"house_building": 3,
"house_district": "sdsadas"
},
"maintenance_id": 8,
"maintenance_client": {
"client_contract_number": "PO77189393_7534",
"client_chief_accountant": "Gerrit",
"client_name": "Adrian66777",
"client_commission": "3558.00",
"client_chairman": "Scottie",
"client_active": true,
"client_debt": "530.00",
"client_contract_date": "2011-06-06",
"client_id": 875,
"client_comments": "5820",
"client_contract_index": "PO84741558_9604",
"client_manager": "Florian",
"client_contact": "9 Elm Waterford Drive"
}
},
"success": true
}
我希望看到:
{
"message": "Something good happened on the server!",
"data": {
"maintenance_type": 1,
"maintenance_tariff": 13,
"maintenance_active": true,
"maintenance_date": "2011-09-20 00:00:00",
"maintenance_house": 3,
"maintenance_id": 8,
"maintenance_client": 875,
},
"success": true
}
所以，是的，这是一个很好的功能，但就我而言(Django 与 ExtJS 集成)我只需要外键。如何将相关对象的数据替换为外键？
最佳答案
尝试将 maintenance_house 更改为 maintenance_house_id 并向维护处理程序添加类方法:
class MaintenanceHandler(CsrfExemptBaseHandler):
fields = ('maintenance_id', 'maintenance_client', 'maintenance_house_id', 'maintenance_type', 'maintenance_tariff', 'maintenance_date', 'maintenance_active')
@classmethod
def maintenance_house_id(self, instance):
# instance is a Maintenance object
return instance.maintenance_house.id
关于django - 如何在 django-piston 剩余输出中显示外键而不是相关对象数据，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/7493993/