Question

我正在尝试为我创建的数据库网站添加搜索栏，我找到了一个教程，我“想”我做错了。

当我进行搜索时，例如“Judy Zhang”，即使它在数据库中也没有显示任何内容

我的vendor.rb / concerns / models / app file

class Vendor < ApplicationRecord
  has_many :fotos      

  def self.search(search)
    if search
      Vendor.where('lower(contact_name) LIKE ?', "'%#{search.downcase}%'")
    else
      Vendor.all
    end
  end
end

我相信我没有正确编码。铁轨上的红宝石很新。我在这里做错了什么？

index.html.erb / vendors / views / layouts / app

的代码

<body>
    <div class = "head">
        <h1>Vendors </h1>
       <div class = "image1" >
            <img src= "http://dx.deucex.com/i/logo.png" >
        </div>
    </div>

    </body>
    <table>
        <tr>
            <%= button_to "New Vendor", new_vendor_path, :method => "get" %>
            <%= button_to "Inventory", inventories_path, :method => "get" %>

            <%= form_tag vendors_path, :method => 'get' do %>
            <%= text_field_tag :search, params[:search] %>
            <%= submit_tag "Search", :name => nil %>
            <% end %>

        </tr>
    </table>

<table>   
    <tr>
        <th>Company</th>
        <th>Contact Name</th>
        <th>Phone</th>
        <th>Email</th>
    </tr>

    <% for vendor in @vendors %>

    <tr>
        <td><%= vendor.company %></td>
        <td><%= vendor.contact_name %></td>
        <td><%= vendor.phone %></td>
        <td><%= vendor.email %></td>
        <body>
            <div class = "button1" >
                <td><%= button_to "Show", vendor_path(vendor), :method => "get" %></td>
            </div>
         </body>

        <td><%= button_to "Edit", edit_vendor_path(vendor), :method => "get" %></td>
            <div class = "button3">
                <td><%= button_to 'Delete', 
                                vendor_path(vendor),
                                method: :delete, 
                                data: { confirm: 'Are you sure?'} %></td>
            </div>

     </tr>
    <% end %>
</table>

我的VendorsController.rb / concerns / controller / app

的代码

class VendorsController < ApplicationController
     def index
        @vendors = Vendor.search(params[:search])
    end
    def show
         @vendor = Vendor.find(params[:id])
    end

     def new
        @vendor = Vendor.new
    end

    def create
        @vendor = Vendor.new(vendor_params)

        if @vendor.save
            redirect_to @vendor
        else
            render 'new'
        end
    end

    def edit
        @vendor = Vendor.find(params[:id])
    end

    def update
       @vendor = Vendor.find(params[:id])
        if @vendor.update (vendor_params)
            redirect_to @vendor
        else
            render 'edit'
        end
   end

    def destroy
        @vendor = Vendor.find(params[:id])
        @vendor.destroy

        redirect_to vendors_path
    end
end

private
    def vendor_params
        params.require(:vendor).permit(:company, :contact_name, :phone, :email, :moq, :cost_per_item, :payment_method, :terms, :turnover, :returns, :notes)
    end

Answer 1

尝试将Vendor中的代码更改为

class Vendor < ApplicationRecord
  has_many :fotos      

  def self.search(search)
    if search
      Vendor.where('lower(name) LIKE ?', "'%#{search.downcase}%'")
    else
      Vendor.all
    end
  end
end

我的搜索栏没有显示

您应该更改以下内容

<% form_tag vendors_path, :method => 'get' do %>

到

<%= form_tag vendors_path, :method => 'get' do %>
# Notice that <%= %> evaluates and prints the output

Rails：搜索栏无效

1 个答案: