Neo4jrb Neo4j::Session::CypherError: uuid not defined

Neo4jrb Neo4j::Session::CypherError: uuid not defined

我尝试使用 find 创建自定义 getOrCreate 方法,如果没有返回任何内容,则使用 create

我的 class :

class User
  include Neo4j::ActiveNode
  include Neo4jrbConcern

  property :name
  property :email

  validates :name, :presence => true
  validates :email, :presence => true
end

getOrCreate方法继承自关注点

def getOrCreate(params)
  obj = self.find(params)
  if obj
    puts 'obj found : ' + obj
    return obj
  else
    return self.create(params)
  end
end

我正在尝试这个:

User.getOrCreate(
   name: data['name'],
   email: data['email']
)

结果是这个错误:

Neo4j::Session::CypherError: uuid not defined (line 1, column 86)
"MATCH (result_user:`User`) WHERE result_user.uuid.name = {result_user_uuid_name} AND uuid.email = {result_user_uuid_email} RETURN result_user ORDER BY ID(result_user) LIMIT {limit_1}"
                                                                                      ^
/Users/xxx/.rvm/gems/ruby-2.1.5/gems/neo4j-core-4.0.0/lib/neo4j-server/cypher_response.rb:166:in `raise_cypher_error'
/Users/xxx/.rvm/gems/ruby-2.1.5/gems/neo4j-core-4.0.0/lib/neo4j-core/query.rb:164:in `response'
/Users/xxx/.rvm/gems/ruby-2.1.5/gems/neo4j-core-4.0.0/lib/neo4j-core/query.rb:205:in `pluck'

你看到我哪里做错了吗?

谢谢!

伯努瓦

你不能像那样将哈希传递给 find。它应该是这样的:

def getOrCreate(params)
  obj = self.where(params).first
  if obj
    puts 'obj found : ' + obj
    return obj
  else
    return self.create(params)
  end
end

虽然这似乎也是使用密码的完美案例 MERGE,这意味着您只需要执行一个查询。