解析 C:/Users/Vanessa/rails_space/config/database.yml 时出现 YAML 语法错误

Question

当我在命令提示符中输入此代码时：

  rails g model User

这是我在控制台中得到的：

  YAML syntax error occurred while parsing 
  C:/Users/Vanessa/rails_space/config/database.yml. Please note that YAML 
  must be consistently indented using spaces. Tabs are not allowed. Error: 
  (<unknown>): did not find expected key while parsing a block mapping at 
  line 7 column 1 (RuntimeError)

这是我的 config/database.yml 文件中的代码：

    # SQLite. Versions 3.8.0 and up are supported.
#   gem install sqlite3
#
#   Ensure the SQLite 3 gem is defined in your Gemfile
#   gem 'sqlite3'
#
default: &default
  adapter: sqlite3
  pool: <%= ENV.fetch("RAILS_MAX_THREADS") { 5 } %>
  timeout: 5000

development:
   adapter: mysql
  database: rails_space_development
  username: root
  password: NothingToSeeHere
  host: localhost

  <<: *default
  database: db/development.sqlite3

# Warning: The database defined as "test" will be erased and
# re-generated from your development database when you run "rake".
# Do not set this db to the same as development or production.
test:
  <<: *default
  database: db/test.sqlite3

production:
  <<: *default
  database: db/production.sqlite3

Answer 1

看起来，在您的开发密钥下，对于适配器，您有一个间距错误。尝试将其更改为：

development:
  adapter: mysql

你在 adapter 之前的 space 太多了。

YAML 对间距非常具体。正如您所发现的，即使是一个额外的 space 也会引发错误。而且您必须确保使用 spaces，而不是制表符。

解析 C:/Users/Vanessa/rails_space/config/database.yml 时出现 YAML 语法错误

YAML syntax error occurred while parsing C:/Users/Vanessa/rails_space/config/database.yml

ruby

parsing

yaml

config

ruby-on-rails