ruby-on-rails – Rails 4搜索多个参数

发布时间：2020-12-17 03:56:35 所属栏目：百科来源：网络整理

导读：如果存在两个参数,我正在寻找搜索和查找结果,但我将被发送到car_show_path,但应该有结果. 模型 class Car ActiveRecord::Base def self.search(car_number,car_model) where(['car_number = ? AND car_model = ?',"%#{car_number}%","%#{car_model}%"]) ende

如果存在两个参数,我正在寻找搜索和查找结果,但我将被发送到car_show_path,但应该有结果.

模型

class Car < ActiveRecord::Base
  def self.search(car_number,car_model) 
    where(['car_number = ? AND car_model = ?',"%#{car_number}%","%#{car_model}%"])
  end
end

控制器展示

@search = Car.search(params[:car_number],params[:car_model])
   if @search.present?
       @search
    else
     redirect_to car_path,notice: "Not a valid combination"
    end

形成

<%= simple_form_for :search,url: car_show_path do |f| %>
  <%= f.input :car_number,:collection => @car.collect {|c| [c.number]},:include_blank => false %>
  <%= f.input :car_model,placeholder: "Car Model" %>
  <%= f.button :submit,'Generate',class: 'btn' %>
<% end %>

解决方法

你做错了.如果查看服务器日志中生成的params哈希值,您可以看到如下内容：search => {：car_model => “value”,：car_number => “值”}.这意味着：car_model和：car_number的值不能用params [：car_model]和params [：car_number]检索,而应该使用params [：search] [：car_model]和params [：search] [：car_number]

@search = Car.search(params[:search][:car_number],params[:search][:car_model])
if @search.present?
  @search
else
  redirect_to car_path,notice: "Not a valid combination"
end

（编辑：李大同）

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