用Rails7+PostgresSQL+Tailwind创建新的Rails应用

2 年 ago
文, 翔
3 minutes

首先

我开始开发个人应用程序。由于要边查资料边实施，所以我将它作为备忘录。

※注意※
我是一位正在学习编程的初学者。
如果我有任何写作错误，请您指正，将不胜感激。

环境

苹果电脑 M1
Rails 7.0.7.2
Ruby 3.2.0
Node.js 20.2.0
Yarn 1.22.19

做过的事情 de

创建一个新的Rails项目

通过最初进行以下步骤`rails new`，框架已经建立。

$ rails new self_growth_diary --database=postgresql --css=tailwind

由于要提交的文件数量已超过5000个，并且为了避免向GitHub推送大量文件，我将在.gitignore文件中添加vendor/bundle的内容。

# Ignore vendor/bundle directory
vendor/bundle

总共有83件。

请启动服务器。

$ bin/dev

创建数据库

创建数据库并完成了Rails新建。

$ bin/rails db:create

然而出现了错误…

connection to server on socket "/tmp/.s.PGSQL.5432" failed: No such file or directory
        Is the server running locally and accepting connections on that socket?
Couldn't create 'self_growth_diary_development' database. Please check your configuration.
rails aborted!
ActiveRecord::ConnectionNotEstablished: connection to server on socket "/tmp/.s.PGSQL.5432" failed: No such file or directory
        Is the server running locally and accepting connections on that socket?

根据我的调查结果，需要启动PostgreSQL服务器。

总结

重新安装了PostgreSQL后，通过$ brew services start postgresql启动了服务器，然后通过$ bin/rails db:create解决了问题。

解决步骤

在上述第三个数据库创建错误之后，确认其是否真的无法运行的状态。

$ brew services list

==> Tapping homebrew/services
Cloning into '/opt/homebrew/Library/Taps/homebrew/homebrew-services'...
remote: Enumerating objects: 2492, done.
remote: Counting objects: 100% (313/313), done.
remote: Compressing objects: 100% (131/131), done.
remote: Total 2492 (delta 213), reused 206 (delta 181), pack-reused 2179
Receiving objects: 100% (2492/2492), 689.37 KiB | 5.03 MiB/s, done.
Resolving deltas: 100% (1152/1152), done.
Tapped 1 command (45 files, 859.2KB).
==> Downloading https://formulae.brew.sh/api/formula.jws.json
########################################################################################################################################## 100.0%
Name          Status User File
mysql         none        
postgresql@14 none

由于postgresql@14未运行，因此需要启动。

$ brew services start postgresql@14

==> Successfully started `postgresql@14` (label: homebrew.mxcl.postgresql@14)

由于成功的消息传来，我以为完成了，于是确认了一下，结果出现了错误……咦？

　$ brew services list               
Name          Status   User         File
mysql         none                  
postgresql@14 error  6 username ~/Library/LaunchAgents/homebrew.mxcl.postgresql@14.plist

我试着重新运行了一次启动命令。

$ brew services start postgresql@14

Bootstrap failed: 5: Input/output error
Try re-running the command as root for richer errors.
Error: Failure while executing; `/bin/launchctl bootstrap gui/501 /Users/username/Library/LaunchAgents/homebrew.mxcl.postgresql@14.plist` exited with 5.

没有安装Bootstrap，为什么会出现这个问题？之后我试过停止和重新启动，但最后重新安装PostgreSQL后问题得以解决。最终原因仍然未明……以下是卸载步骤。

$ brew uninstall postgresql@14
Uninstalling /opt/homebrew/Cellar/postgresql@14/14.8... (3,315 files, 45.3MB)
Error: Could not remove postgresql@14 keg! Do so manually:
  sudo rm -rf /opt/homebrew/Cellar/postgresql@14/14.8

エラーが出たので、提示されたコードを打ったところ、正常終了
$ sudo rm -rf /opt/homebrew/Cellar/postgresql@14/14.8

重新安装

$ brew install postgresql

==> Downloading https://formulae.brew.sh/api/formula.jws.json
########################################################################################################################################## 100.0%
Warning: Formula postgresql was renamed to postgresql@14.
Warning: Formula postgresql was renamed to postgresql@14.
==> Downloading https://formulae.brew.sh/api/cask.jws.json
########################################################################################################################################## 100.0%
==> Downloading https://ghcr.io/v2/homebrew/core/postgresql/14/manifests/14.9
Already downloaded: /Users/ユーザー名/Library/Caches/Homebrew/downloads/4b57da1f9c51857d70615ba4a417e293db01f6d2309a29ca617dead69a8da01f--postgresql@14-14.9.bottle_manifest.json
==> Fetching postgresql@14
==> Downloading https://ghcr.io/v2/homebrew/core/postgresql/14/blobs/sha256:8b299896c59b81d488f837f20cda59dfc5fd6bba2e3140eb116d9771d9c53334
Already downloaded: /Users/ユーザー名/Library/Caches/Homebrew/downloads/b97d71a72b378d03e5e8c2fdf30a510384f163c45c43f1bfdd0888eb9889fe40--postgresql@14--14.9.arm64_ventura.bottle.tar.gz
==> Pouring postgresql@14--14.9.arm64_ventura.bottle.tar.gz
==> Caveats
This formula has created a default database cluster with:
  initdb --locale=C -E UTF-8 /opt/homebrew/var/postgresql@14
For more details, read:
  https://www.postgresql.org/docs/14/app-initdb.html

To start postgresql@14 now and restart at login:
  brew services start postgresql@14
Or, if you don't want/need a background service you can just run:
  /opt/homebrew/opt/postgresql@14/bin/postgres -D /opt/homebrew/var/postgresql@14
==> Summary
?  /opt/homebrew/Cellar/postgresql@14/14.9: 3,316 files, 45.3MB
==> Running `brew cleanup postgresql@14`...
Disable this behaviour by setting HOMEBREW_NO_INSTALL_CLEANUP.
Hide these hints with HOMEBREW_NO_ENV_HINTS (see `man brew`).

再次启动PostgreSQL。

$ brew services start postgresql
Warning: Formula postgresql was renamed to postgresql@14.
==> Successfully started `postgresql@14` (label: homebrew.mxcl.postgresql@14)

根据确认，PostgreSQL已成功启动。

$ brew services list              
Name          Status  User File
mysql         none         
postgresql@14 started ユーザー名 ~/Library/LaunchAgents/homebrew.mxcl.postgresql@14.plist

再次创建数据库。终于成功了☺️

$ bin/rails db:create
Created database 'self_growth_diary_development'
Created database 'self_growth_diary_test'
image.png

请提供以下信息供参考。

 

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