저희가 잠수하기 전에.

입문

ActiveSupport::Inflector.inflections do |inflect|
    inflect.uncountable "pokemon"
end

class Pokemon < ApplicationRecord
    self.inheritance_column = "not_sti"
end

라우팅 업데이트

Rails.application.routes.draw do
  root 'pokemon#index'
  resources :pokemon
end

창설 폼 테스트

이름별 검색

<%= form_with(url: '/pokemon', method: 'get', local: true) do %>
  <%= text_field_tag(:search) %>
  <%= submit_tag("Search") %>
<% end %>

기본 검색 방법

class Pokemon < ApplicationRecord
    self.inheritance_column = "not_sti"

    def self.search(search)
        if search 
            where(["name LIKE ?","%#{search}%"])
        else
            all
        end
    end 
end

def index
    @pokemon = Pokemon.search(params[:search])
end

모델 검색

검색 컨트롤러

Rails.application.routes.draw do
  root 'pokemon#index'
  resources :pokemon
  resources :searches
end

컨트롤러 동작

class SearchesController < ApplicationController
    def show
        @search = Search.find(params[:id])
    end 

    def new 
        @search = Search.new
        @types = Pokemon.distinct.pluck(:type)
        @regions = Pokemon.distinct.pluck(:region)
    end

    def create
        @search = Search.create(search_params)
        redirect_to @search
    end 

    private

    def search_params
        params.require(:search).permit(:name, :type, :region)
    end 
end

새 양식 만들기

<h1>Advanced Search</h1>

<%= form_with model: @search do |f| %>
    <%= f.label :name %>
    <%= f.text_field :name %>

    <%= f.label :type %>
    <%= f.select :type, options_for_select(@types), include_blank: true %><br>

    <%= f.label :region %>
    <%= f.select :region, options_for_select(@regions), include_blank: true %><br><br>

    <%= f.submit "Search" %>
<% end %>

<p><%= link_to "Back", '/pokemon' %></p>

<h1>Search Results</h1>
<p><%= link_to "Back", new_search_path %></p>

<% if @search.search_pokemon.empty? %>
    <p>No Pokemon were found.</p>
<% else %>
    <table>
        <thead>
            <tr>
                <th>Name</th>
                <th>Type</th>
                <th>Region</th>
                <th colspan="3"></th>
            </tr>
        </thead>

        <tbody>
            <% @search.search_pokemon.each do |pokemon| %>
            <tr>
                <td><%= pokemon.name %></td>
                <td><%= pokemon.type %></td>
                <td><%= pokemon.region %></td>
                <td><%= link_to 'Show', pokemon %></td>
                <td><%= link_to 'Edit', edit_pokemon_path(pokemon) %></td>
                <td><%= link_to 'Destroy', pokemon, method: :delete, data: { confirm: 'Are you sure?' } %></td>
            </tr>
            <% end %>
        </tbody>
</table>
<% end %>

검색 모델 업데이트

class Search < ApplicationRecord
    self.inheritance_column = "not_sti"

    def search_pokemon
        pokemon = Pokemon.all 

        pokemon = pokemon.where(['name LIKE ?', name]) if name.present?
        pokemon = pokemon.where(['type LIKE ?', type]) if type.present?
        pokemon = pokemon.where(['region LIKE ?', region]) if region.present?

        return pokemon
    end 
end

테스트 검색