我之前将我的模型错误地命名为“Companies”。我没有重命名它,而是重命名了所有引用,删除了数据库并通过重新运行迁移重新创建了所有内容。我可以看到从 SQLite 资源管理器中重新创建为“Company”的表,但是当我通过 irb 运行 Company.new 时,我得到:
ActiveRecord::StatementInvalid: Could not find table 'companies'
from /Users/emzy/rails/blah/.bundle/ruby/1.9.1/gems/activerecord-3.0.7/lib/active_record/connection_adapters/sqlite_adapter.rb:295:in `table_structure'
from /Users/emzy/rails/blah/.bundle/ruby/1.9.1/gems/activerecord-3.0.7/lib/active_record/connection_adapters/sqlite_adapter.rb:186:in `columns'
from /Users/emzy/rails/blah/.bundle/ruby/1.9.1/gems/activerecord-3.0.7/lib/active_record/base.rb:680:in `columns'
from /Users/emzy/rails/blah/.bundle/ruby/1.9.1/gems/activerecord-3.0.7/lib/active_record/persistence.rb:284:in `attributes_from_column_definition'
from /Users/emzy/rails/blah/.bundle/ruby/1.9.1/gems/activerecord-3.0.7/lib/active_record/locking/optimistic.rb:62:in `attributes_from_column_definition'
from /Users/emzy/rails/blah/.bundle/ruby/1.9.1/gems/activerecord-3.0.7/lib/active_record/base.rb:1395:in `initialize'
from (irb):1:in `new'
from (irb):1
from /Users/emzy/rails/blah/.bundle/ruby/1.9.1/gems/railties-3.0.7/lib/rails/commands/console.rb:44:in `start'
from /Users/emzy/rails/blah/.bundle/ruby/1.9.1/gems/railties-3.0.7/lib/rails/commands/console.rb:8:in `start'
from /Users/emzy/rails/blah/.bundle/ruby/1.9.1/gems/railties-3.0.7/lib/rails/commands.rb:23:in `<top (required)>'
from script/rails:6:in `require'
from script/rails:6:in `<main>'
我不确定“公司”的引用来自哪里 - 我在项目目录中找不到任何引用。所有 yml 等看起来都很好。
Controller :
class CompanyDirectoryController < ApplicationController
before_filter :require_admin, :only => [:new, :create, :edit]
def new
@company = Company.new
@company.companylinks.build
end
型号:
class Company < ActiveRecord::Base
validates_presence_of :fullname, :detailed_description, :product_info, :cat_tags, :email
validates_uniqueness_of :fullname
has_many :companylinks, :class_name => 'CompanyLinks',
:foreign_key => "pid",
:dependent => :destroy
has_attached_file :company_photo,
:styles => { :medium => "300x300>",
:thumb => "100x100>" }
attr_accessor :photo_file_name
attr_accessor :photo_content_type
attr_accessor :photo_file_size
attr_accessor :photo_updated_at
accepts_nested_attributes_for :companylinks,
:allow_destroy => true
end
路线:
资源:公司,: Controller =>:company_directory
为什么它仍在寻找 company
而不是 Company
?任何帮助都会很棒。
最佳答案
ActiveRecord 正在查找的表名称为 Company 模型。 Rails 使用词形变化来复数模型名称,以形成要在数据库中查询的表的名称。如果您想重命名表或必须使用旧数据库,可以在模型中使用 set_table_name 来设置表名称。
更新:the rails wiki 还有一些其他有用的提示。 .
关于ruby-on-rails - 获取 ActiveRecord::StatementInvalid:重命名模型后找不到表,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/6463585/