Question

我写了一个小的ruby脚本，它将自己连接到一个mysql数据库并创建一个表（如果这个表还没有存在）。在此之后，脚本应该在此表中存储内容，我尝试使用以下方法存储此数据：

Table.create(:foo => "bar", :foobar => "something", :blallala => "blololl")

我也试过

Table.new(:foo => "bar", :foobar => "something", :blallala => "blololl")

但似乎也是这样，因为我总是得到错误：

Mysql ::错误：表＆＃39; my-username.my-dbname＆＃39;不存在：从表名
显示完整的字段

这就是我到目前为止所得到的：

 ActiveRecord::Base.establish_connection(
                :adapter => "mysql",
                :host => "localhost",
                :username => "my-username",
                :password => "my-password",
                :database => "my-db-name",
                :encoding => "UTF8"
        )

        table_name = "my_table"
        unless ActiveRecord::Base.connection.tables.include? table_name
                ActiveRecord::Schema.define do
                        create_table :"#{table_name}" do |table|
                                table.column :foo, :string
                                table.column :bar, :string
                                table.column :blallala, :string
                        end
                end
        end

        class Table < ActiveRecord::Base
                self.table_name = "#{table_name}"
        end

         Table.create(:foo => "bar", :foobar => "something", :blallala => "blololl")
         #Table.new(:foo => "bar", :foobar => "something", :blallala => "blololl")

所以问题是：我如何实际创建一个columo / row以及为什么Table.create(:foo => "bar", :foobar => "something", :blallala => "blololl")不起作用？

Answer 1

这对我有用：

# establish connection here

class Table < ActiveRecord::Base
  self.table_name = "the_table"
end

unless Table.table_exists?
  ActiveRecord::Schema.define do
    create_table :the_table do |table|
      table.column :foo, :string
      table.column :bar, :string
      table.column :blallala, :string
    end
  end
end


Table.create(:foo => "bar", :bar => "something", :blallala => "blololl")

创建mysql行/列

1 个答案: