ruby-on-rails - PG::StringDataRightTruncation:错误:PostgreSQL字符串(255)限制| Heroku

Question

我有一个Listings controller，用户可以添加描述。如果描述很长，应该是正确的，我在Heroku中收到此错误：

ActiveRecord::StatementInvalid (PG::StringDataRightTruncation: ERROR:  
value too long for type character varying(255)

我怎样才能解决这个问题？

编辑

我发现（约翰也说过）我必须将表字符串（有限制）更改为：text，这是无限的。但是，仅更改迁移中的表似乎不起作用。

我的编辑列表迁移

class CreateListings < ActiveRecord::Migration
def change
create_table :listings do |t|
  t.string :title
  t.text :description, :limit => nil

  t.timestamps
end
end
end

但是我仍然遇到Heroku的麻烦->

    2013-07-29T09:39:05.069692+00:00 app[web.1]: ActiveRecord::StatementInvalid (PG::StringDataRightTruncation: ERROR:  value too long for type character v rying(255)
2013-07-29T09:39:05.069870+00:00 app[web.1]:
2013-07-29T09:39:05.069692+00:00 app[web.1]: : INSERT INTO "listings" ("created_at", "description", "image_content_type", "image_file_name", "image_fil _size", "image_updated_at", "price", "title", "updated_at", "user_id") VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10) RETURNING "id"):
2013-07-29T09:39:05.069870+00:00 app[web.1]:   app/controllers/listings_controller.rb:35:in `block in create'
2013-07-29T09:39:05.069870+00:00 app[web.1]:   app/controllers/listings_controller.rb:34:in `create'
2013-07-29T09:39:05.069870+00:00 app[web.1]:
2013-07-29T09:39:05.069860+00:00 heroku[router]: at=info method=POST path=/listings host=vaultx.herokuapp.com fwd="178.59.173.169" dyno=web.1 connect=3 s service=1882ms status=500 bytes=1266

Answer 1

似乎将列指定为：text类型而不是：string可以解决此问题。