def _branchAdd(requestData, user):
'''
增加一个选项的具体处理过程
'''
# 检查是否有提供Question
keys = requestData.keys()
if 'question' not in keys:
return packageResult(RESULT_CODE.ERROR, RESULT_MESSAGE.NO_ID)
questionIdSigned = requestData['question']
# 对id进行数字签名的检查
try:
signer = Signer()
questionId = signer.unsign(questionIdSigned)
except BadSignature:
# 篡改发现处理
return packageResult(RESULT_CODE.ERROR, RESULT_MESSAGE.BAD_SAGNATURE)
# 尝试读取question信息
questionList = Question.objects.filter(id=questionId)
if len(questionList) == 0:
return packageResult(RESULT_CODE.ERROR, RESULT_MESSAGE.OBJECT_NOT_EXIST)
question = questionList[0]
# 检查是否有权限做新增
if question.createBy.id != user.id:
return packageResult(RESULT_CODE.ERROR, RESULT_MESSAGE.NO_PRIVILEGE)
# 遍历Branch的所有Field，并尝试在request中寻找是否提供了对应的数据
data = {}
for field in getModelFields(Branch):
# 跳过系统自动增加的字段
if field.auto_created:
continue
# 读取request数据
value = requestData.get(field.name, None)
# 特殊处理json的Boolean型的变量
if type(field) == BooleanField:
value = jsonBoolean2Python(value)
# 对创建人和修改人的信息进行特殊处理
if field.name in [USER_CREATE_BY_FIELD_NAME, USER_MODIFY_BY_FIELD_NAME]:
value = user
# 对question字段进行特殊处理,提交的数据是id转化为对象
if field.name == 'question':
value = question
# 对ord 字段进行特殊处理，取当前的问题数量加1
if field.name == 'ord':
# 这里锁定了question所有branch对象
value = question.branch_set.select_for_update().count()
# 如果调用者没有显示执行字段值为空，则不增加到data中去，让模型的默认值发挥作用
# 字段代码不能早于对createBy和modifyBy的处理
if value is None and field.name not in keys:
continue
# 将校验的数据添加到data，准备为创建数据库用
data[field.name] = value
branch = Branch(**data)
# 进行数据校验
try:
branch.full_clean()
except ValidationError as exception:
return packageResult(
RESULT_CODE.ERROR, RESULT_MESSAGE.VALIDATION_ERROR,
{'validationMessage': exception.message_dict})
# 写到数据库
branch.save()
# 返回成功
return packageResult(RESULT_CODE.SUCCESS, RESULT_MESSAGE.SUCCESS, {'branchId': branch.id})
