我正在尝试通过使用 Active Record 连接到 .sqlite 文件来与它交互。我这样做:
require 'active_record'
# Connect to DB
ActiveRecord::Base.establish_connection( :adapter => 'sqlite3', :database => 'database.sqlite')
# Log the tables to make sure Active Record is connected to the DB correclty
puts ActiveRecord::Base.connection.tables
# Map from existing table records to a Active Record model
class Patient < ActiveRecord::Base
set_table_name "ZPATIENT"
end
与数据库的连接就像打印出数据库表一样:
ZPATIENT
ZZCONFIG
Z_PRIMARYKEY
Z_METADATA
但是将 ZPATIENT
表映射到 Patient Active Record 模型的尝试失败了:
~/.rvm/gems/ruby-1.9.3-p448/gems/activerecord-4.0.0/lib/active_record/dynamic_matchers.rb:22:in `method_missing': undefined method `set_table_name' for Patient(Table doesn't exist):Class (NoMethodError)
from script.rb:8:in `<class:Patient>'
from script.rb:7:in `<main>'
不确定我做错了什么?我是否需要对 Active Record 进行某种迁移以了解如何将表映射到模型?
最佳答案
set_table_name
已被删除。尝试:
class Patient < ActiveRecord::Base
self.table_name = 'ZPATIENT'
end
关于ruby - .sqlite 文件的 Active Record set_table_name 错误,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/17498147/