在我的种子目录中,我有两个文件:seed.rb
和file.csv
。我解析并清理了CSV文件。然后我选择了我想要的信息(第1,2,3行等)并将其放入哈希:
require 'csv'
data = {}
CSV.foreach("file.csv") do |line|
data[line[1]] = {:address => line[2].to_s, :city => line[3].to_s, :state => line[4].to_s, :zipcode => line[5].to_s, :phone => line[6].to_s}
end
我想将这些数据(当前是哈希)保存到我的Sequel数据库中,名为town.rb
。在我的模型中,我所写的是:
class Town < Sequel::Model
#put conditions here
end
注意:在与此模型关联的迁移中,我写了:
Sequel.migration do
up do
create_table(:towns) do
primary_key :__id__
String :name, :null => false
String :address
String :city
String :state
String :zipcode
String :phone
end
end
down do
drop_table(:towns)
end
end
现在回到我的seed.rb
文件中,我按照我的代码编写,尝试将数据保存到种子文件中:
data do |key, record|
c = Town.new #LINE 36
c.name = key
c.address = record[:address]
c.city = record[:city]
c.state = record[:state]
c.zipcode = record[:zipcode]
c.phone = record[:phone]
c.save
end
但是,我一直收到错误说:
seed.rb:36:in `block in <top (required)>': uninitialized constant Town (NameError)
seed.rb:35:in `each'
seed.rb:35:in `<top (required)>'
from -e:1:in `load'
from -e:1:in `<main>'
如何在不收到错误的情况下将此哈希保存到我的数据库?任何帮助都会惊人!谢谢!
答案 0 :(得分:1)
看起来Town
类在seeds.rb
运行时没有加载。
如果来自@SergioTulentsev的评论不起作用,您可以发布您的种子文件吗?特别是发生错误的行36
?
我猜你在36
行上引用了Town
类,它没有被加载(或者那些行中的某些内容),导致:
uninitialized constant Town (NameError)