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content_tagの使い方について

Posted at

背景

見たこと無い記述が出てきて調べた際に便利だったので、備忘録として書きます。

##content_tagとは
Railsのビューヘルパーで、これを用いるとHTMLコードの要素を生成することが出来ます。
これを使うことでスマートなコードを書くことができます!

##使い方


#通常
content_tag(:p)
#=> "<p></p>"

content_tag(:p, "テスト", id: "test", class: "test-class")
#=> "<p id="test" class="test-class">テスト</p>"

# 入れ子
content_tag(:div, id: "hoge") do
 content_tag(:p, "テスト")
end
#=> "<div id="hoge"><p>テスト</p></div>"

# ヘルパーに切り出して使う
def helper
 #処理
 hoge = 
 content_tag(:div, hoge) 返り値
end
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