[RUBY] Enter line breaks in rails text_area → display as it is.

I just referred to this article lol https://qiita.com/kamotetu/items/1aa94994985c720668e4

with form_for and form_with Line breaks when entering text → I can't do it at all! It became. I want to display it as it is.

problem

input form

new.html.erb

<div class="from-group mb-4">
   <%= f.label :introduction, "Introduction", class: "form-label" %><br />
   <%=f.text_area :introduction, class: "form-control", id:"user-introduction", size: "90x5", maxlength: "1000", placeholder: "Write an introductory text"%>
</div>

Enter a post display

show.html.erb

<%[email protected]%>

Then I can't break a line. I want to solve this.

Solution

show.html.erb

<%=safe_join(@user.introduction.split("\n"),tag(:br))%>

Just change it to I did well!

This description is

• Consecutive line breaks (line breaks that remain blank)
• Paragraph (make a space for one character with the space key)

It becomes possible.

By the way

When the input home was not validated, an error occurred if it was sent blank. In such a case

show.html.erb

<%if @user.introduction.nil? %>   #If the introductory text remains "empty", an error will occur, so nil?=Add when true
  <%[email protected]%>       #No validation
<% else %>
  <%=safe_join(@user.introduction.split("\n"),tag(:br))%>    #If the introductory text is not "empty", it will be reflected normally
<%end %>

I solved it with.