migrate後の表示について

Question

railsでmigrateすると下記のような表示が出てきます。
一応テーブルは作られてるみたいなので問題はないのかも知れませんが、この後モデルを作成しても似たような現象が起きるので気になってます。

何やら色々と警告されてるみたいなのですが、warningの量が多すぎて理解できないでいます。
原因わかる方居られましたらごきょう

[vagrant@localhost myblog]$ rails db:migrate
/home/vagrant/.rbenv/versions/2.7.0/lib/ruby/gems/2.7.0/gems/actionpack-5.1.7/lib/action_dispatch/middleware/stack.rb:35: warning: Using the last argument as keyword parameters is deprecated; maybe ** should be added to the call
/home/vagrant/.rbenv/versions/2.7.0/lib/ruby/gems/2.7.0/gems/actionpack-5.1.7/lib/action_dispatch/middleware/static.rb:109: warning: The called method `initialize' is defined here
/home/vagrant/.rbenv/versions/2.7.0/lib/ruby/gems/2.7.0/gems/activerecord-5.1.7/lib/active_record/connection_adapters/abstract_adapter.rb:82: warning: deprecated Object#=~ is called on Integer; it always returns nil
/home/vagrant/.rbenv/versions/2.7.0/lib/ruby/gems/2.7.0/gems/activerecord-5.1.7/lib/active_record/connection_adapters/sqlite3_adapter.rb:570: warning: Using the last argument as keyword parameters is deprecated; maybe ** should be added to the call
/home/vagrant/.rbenv/versions/2.7.0/lib/ruby/gems/2.7.0/gems/activerecord-5.1.7/lib/active_record/connection_adapters/abstract/schema_definitions.rb:219: warning: The called method `initialize' is defined here
/home/vagrant/.rbenv/versions/2.7.0/lib/ruby/gems/2.7.0/gems/activerecord-5.1.7/lib/active_record/schema_migration.rb:28: warning: Using the last argument as keyword parameters is deprecated; maybe ** should be added to the call
/home/vagrant/.rbenv/versions/2.7.0/lib/ruby/gems/2.7.0/gems/activerecord-5.1.7/lib/active_record/connection_adapters/abstract/schema_definitions.rb:187: warning: The called method `string' is defined here
/home/vagrant/.rbenv/versions/2.7.0/lib/ruby/gems/2.7.0/gems/activerecord-5.1.7/lib/active_record/connection_adapters/abstract/schema_definitions.rb:322: warning: Using the last argument as keyword parameters is deprecated; maybe ** should be added to the call
/home/vagrant/.rbenv/versions/2.7.0/lib/ruby/gems/2.7.0/gems/activerecord-5.1.7/lib/active_record/connection_adapters/abstract/schema_definitions.rb:371: warning: The called method `new_column_definition' is defined here
/home/vagrant/.rbenv/versions/2.7.0/lib/ruby/gems/2.7.0/gems/activerecord-5.1.7/lib/active_record/connection_adapters/abstract/schema_creation.rb:17: warning: Using the last argument as keyword parameters is deprecated; maybe ** should be added to the call
/home/vagrant/.rbenv/versions/2.7.0/lib/ruby/gems/2.7.0/gems/activerecord-5.1.7/lib/active_record/connection_adapters/abstract/schema_statements.rb:1062: warning: The called method `type_to_sql' is defined here
/home/vagrant/.rbenv/versions/2.7.0/lib/ruby/gems/2.7.0/gems/activerecord-5.1.7/lib/active_record/internal_metadata.rb:35: warning: Using the last argument as keyword parameters is deprecated; maybe ** should be added to the call
/home/vagrant/.rbenv/versions/2.7.0/lib/ruby/gems/2.7.0/gems/activerecord-5.1.7/lib/active_record/connection_adapters/abstract/schema_definitions.rb:187: warning: The called method `string' is defined here
/home/vagrant/.rbenv/versions/2.7.0/lib/ruby/gems/2.7.0/gems/activerecord-5.1.7/lib/active_record/transactions.rb:210: warning: Using the last argument as keyword parameters is deprecated; maybe ** should be added to the call
/home/vagrant/.rbenv/versions/2.7.0/lib/ruby/gems/2.7.0/gems/activerecord-5.1.7/lib/active_record/connection_adapters/abstract/database_statements.rb:228: warning: The called method `transaction' is defined here
/home/vagrant/.rbenv/versions/2.7.0/lib/ruby/gems/2.7.0/gems/activerecord-5.1.7/lib/active_record/connection_adapters/abstract/transaction.rb:126: warning: Using the last argument as keyword parameters is deprecated; maybe ** should be added to the call
/home/vagrant/.rbenv/versions/2.7.0/lib/ruby/gems/2.7.0/gems/activerecord-5.1.7/lib/active_record/connection_adapters/abstract/transaction.rb:47: warning: The called method `initialize' is defined here
== 20200401195824 CreatePosts: migrating ======================================
-- create_table(:posts)
/home/vagrant/.rbenv/versions/2.7.0/lib/ruby/gems/2.7.0/gems/activerecord-5.1.7/lib/active_record/connection_adapters/abstract/schema_statements.rb:278: warning: Using the last argument as keyword parameters is deprecated; maybe ** should be added to the call
/home/vagrant/.rbenv/versions/2.7.0/lib/ruby/gems/2.7.0/gems/activerecord-5.1.7/lib/active_record/connection_adapters/sqlite3/schema_definitions.rb:5: warning: The called method `primary_key' is defined here
   -> 0.0024s
== 20200401195824 CreatePosts: migrated (0.0025s) =============================

/home/vagrant/.rbenv/versions/2.7.0/lib/ruby/gems/2.7.0/gems/activemodel-5.1.7/lib/active_model/type/integer.rb:11: warning: Using the last argument as keyword parameters is deprecated; maybe ** should be added to the call
/home/vagrant/.rbenv/versions/2.7.0/lib/ruby/gems/2.7.0/gems/activemodel-5.1.7/lib/active_model/type/value.rb:6: warning: The called method `initialize' is defined here

Answer 1

warningの量が多すぎて理解できないでいます。

多すぎて理解できないというのは、考えるのをやめていることが多いです。
1行ずつに分解して、エラーを追っていく癖をつけることをおすすめします。

---

と前置きは長くなりましたが、1行目のエラー文を検索しました。

検索キーワード：Using the last argument as keyword parameters is deprecated; maybe ** should be added to the call

検索結果1つ目
https://tech.recruit-mp.co.jp/server-side/post-19932/

1行目は下記の通りactionpackについてのエラーなので、まずは上記リンクの該当部分を見てみてください。
/home/vagrant/.rbenv/versions/2.7.0/lib/ruby/gems/2.7.0/gems/actionpack-5.1.7/lib/action_dispatch/middleware/stack.rb:35:

Comments

[GAD0244]

no1knowsさま、コメントありがとうございます！確かにwarningの多さに心が折れていました。。。
教えていただいた参考サイト見ながら自力解決できるよう頑張ります！

[no1knows]

ザクッと説明するとRuby2.7だとアプリが問題なくても依存関係などの兼ね合いからワーニングがたくさん出るよということです。

個人的には、今はRuby2.6で構築しておいて、次のバージョンがruby3.0（になる予定）なので、それを待ったほうが良いと思います。