PG :: StringDataRightTruncation：错误：PostgreSQL字符串（255）限制| Heroku的 [英] PG::StringDataRightTruncation: ERROR: PostgreSQL string(255) limit | Heroku

问题描述

我有清单控制器，用户可以添加说明。如果描述很长，应该是这样，我在Heroku收到这个错误：

I Have a Listings controller and users can add a description. If the description is long, which it should be, I receive this error in Heroku:

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

我怎么能解决这个问题？

How can I fix this?

编辑

我发现了我必须改变我的表格字符串（它有一个限制）：文本是无限的，但只是在迁移中更改表格似乎没有用。

I found out (John said it also) that i have to change in my table string(which has a limit) to :text which is limitless. But only changing the table in the migration didn't seem to work.

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麻烦 - >

But i'm still getting Heroku trouble ->

    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

推荐答案

它似乎是这样将列指定为：文本类型而不是：字符串将解决此问题。

It would seem that specifying the column as a :text type and not a :string would fix this problem.

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