[RUBY] [For those who create portfolios] How to omit character strings

When creating a portfolio, I wanted to omit the long sentences and display "Read more" or "...", so I will summarize them here.

Conclusion

Use the truncate method.

How to use

There are two types of truncate.

String

`string.rb`


 "Spring is Akebono. At the edge of the mountain, which is finally turning white, a little light is shining, and the thin clouds of purple clouds flutter.".truncate(30) %>
 # "Spring is Akebono. At the edge of the mountain, which is finally turning white, a little light,..."

option	Description	Default
:omission	The string that follows the abbreviated string	...
:separator	Delimiter. Make sure that the character string is not cut off halfway. I can't do it in Japanese.	None

With these,

`string.rb`


"Spring is Akebono. At the edge of the mountain, which is finally turning white, a little light is shining, and the thin clouds of purple clouds flutter.".truncate(30, omission: '...read more', separator: ' ')
# "Spring is Akebono. Finally whitening on the mountainside, few...read more"

TextHelper

`texthelper.rb`


truncate("Spring is Akebono. At the edge of the mountain, which is finally turning white, a little light is shining, and the thin clouds of purple clouds flutter.")
# "Spring is Akebono. At the edge of the mountain, which is finally turning white, a little light,..."

option	Description	Default
:length	Character string length before abbreviation	30
:omission	The string that follows the abbreviated string	...
:separator	Delimiter. Make sure that the character string is not cut off halfway. I can't do it in Japanese.	None
:escape	HTML escape(Do not escape if false is specified)	true

Result of actual use

I used it to display the content of the person who posted it.

<%= truncate(@post.content, length: 50) do %>
  <p><%= link_to 'read more', @post %></p>
<% end %>

When you enter the weekly report, the post will be displayed on the right side, and after displaying 50 characters of the posted content, you can jump to the details with the link to read more.

reference

https://apidock.com/rails/String/truncate https://apidock.com/rails/ActionView/Helpers/TextHelper/truncate