[RUBY] Search function [copype implementation]


Implement the search function with the minimum required code. The explanation is good, so it's for those who want to move it anyway.

Operating environment

$ ruby -v
ruby 2.5.7p206 (2019-10-01 revision 67816) [x86_64-linux]

$ rails -v



def self.search(search)
  User.where(['name LIKE ?', "%#{search}%"])


def index
  @users = User.all

def search
  @users = User.search(params[:search])
  render "index"


<%= form_with(url: search_path, method: :get, local: true) do |f| %>
  <%= f.text_field :search %>
  <%= f.submit "Search" %>
<% end %>

<% @users.each do |user| %>
  <%= user.name %>
<% end %>


get "search" => "users#search"

Reference article

[Rails] Implement search function without gem

・ I have omitted the explanation this time, so if you want to know more, I think the following article is easy to understand. [Rails] Thorough explanation of ransack and search function without gem !! Read this to become a search function master!

・ This time, I searched only by name, but when I want to search by both name and nickname [Rails] How to search across multiple columns with one search form

-Implemented by partial match search this time, but when you want to perform prefix match, suffix match, exact match search Rails-Ambiguous search for characters using LIKE clause (if you want to search for words containing specific characters)

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