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This problem began as the commonly-seen “incompatible character encodings: ASCII-8BIT and UTF-8” problem, but that is not what I'm asking. Rather, I discovered that this problem was happening because certain fields of my database are being tagged as ASCII-8BIT when they're retrieved, while most are correctly shown as UTF-8.

For example, in a table with columns country and nationality, where both columns in row 16 have identical values (copied-and-pasted), I get

irb(main):003:0> c = Country.find(16)
irb(main):004:0> puts "#{c.name}, #{c.name.encoding}, #{c.name.bytes.to_a}"
�land Islands, UTF-8, [195, 133, 108, 97, 110, 100, 32, 73, 115, 108, 97, 110, 100, 115]
irb(main):005:0> puts "#{c.nationality}, #{c.nationality.encoding}, #{c.nationality.bytes.to_a}"
�land Islands, ASCII-8BIT, [195, 133, 108, 97, 110, 100, 32, 73, 115, 108, 97, 110, 100, 115]

Likewise, a simple puts name gives �land Islands while for nationality it gives "\xC3\x85land Islands" -- same bytes, different presentation.

The encoding for a given column appears to be constant regardless of whether the string has non-ascii characters, so it is not simply a problem with the string. That is, all the values in nationality are interpreted as ascii and all those in name as UTF-8.

The problem is not limited to a single table, and I have not found any pattern to which columns are mis-recognized.

Here are the settings and environment:

  • Rails 3.0.0 on Windows 7 64-bit
  • Database adapter: mysql2 and mysql both show same behavior
  • Database.yml includes encoding: utf8
  • application.rb includes config.encoding = "utf-8"
  • MySQL database, table, and both columns are defined as utf8
  • Both columns in MySQL are varchar, 255, allow null
  • I can reproduce the problem with a fresh installation of Rails and nothing except the Country model defined, to access the database. I have not yet tried with a fresh, one-line database.

Anyone know what's going on here?

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3 回答 3

0

我找到了解决方案，使用 ruby​​-mysql gem 代替 mysql 或 mysql2 gems。

于 2011-02-23T07:31:22.990 回答
0

这里同样的问题！mysql2 gem、Rails 3.0.3 和“不兼容的字符编码”错误

于 2011-02-07T10:50:58.380 回答
-1

我想我也遇到了类似的问题。

当我从 MySQL DB rails 检索数据时，将字符串转换为浮点数：

列“Complemento”和“estado”是 DB 中的字符串，尽管操作“show”说 Complemento: 0.0 -> 在 DB 是“apto 191”

Escola 已成功创建。

姓名：席尔瓦·布拉加

Endereco: Rua Dr Arnaldo

人数：99

补充：0.0 -> DB 是“apto 191”

Cidade：圣保罗

Estado：0.0 -> DB 是“MG”

编辑 | 后退

于 2010-11-26T01:50:22.857 回答