Ajax在rails 5中不起作用

Question

i use stock gem to search name of company and return last-price.when add Ajax not return any things. no error in console but when open network appear message failed to load data .

stock_controller.rb

    def search
    if params[:stock].present?
        @stock = Stock.new_form_lookup(params[:stock])
        if @stack 
            respond_to do |format|
              format.js { render partial: 'users/result' }
            end
        else
            flash[:danger] = "You have entered an incorrect symbol"
            redirect_to my_portfolio_path
        end

    else
        flash[:danger] = "You have entered an empty search string"
        redirect_to my_portfolio_path
    end
end

my_portfolio.html.erb

 <h1>My Portfolio</h1>

<h3>Search for Stocks</h3>
<div id="stock-lookup">
  <%= form_tag search_stocks_path, remote: true, method: :get, id:"stock-lookup-form" do %>
    <div class="form-group row no-padding text-center col-md-12">
      <div class="col-md-10">
        <%= text_field_tag :stock, params[:stock], placeholder: "Stock Ticker Symbol", autofocus: true, class: "form-control search-box input-lg" %>
      </div>
      <div class="col-md-2">
        <%= button_tag(type: :submit, class: "btn btn-lg btn-success") do %>
          <i class="fa fa-search"></i> Look up a stock
        <% end %>
      </div>
    </div>
  <% end %>
</div>
<div id="results">
  <%= render 'result' %>
</div>

_result.html.erb

<% if @stock%>
    <div class="well result-block">
        <strong>Symbol:</strong> <%= @stock.ticker%>
        <strong>Name:</strong> <%= @stock.name%>
        <strong>Price:</strong> <%= @stock.last_price%>

    </div>
<%end%>

_result.js.erb

$("#results").html("<%= j(render 'users/result.html') %>");

when test file _result.js.erb add alert("hello"); work correctly.

setp of add ajax

• add remote: true in form
• add JQuery in application.js
• use format.js and partial:
• create file _result.js.erb

stock model

    def self.new_form_lookup(ticker_symbol)
    begin

        looked_up_stock = StockQuote::Stock.quote(ticker_symbol)
        #price = strip_commas(looked_up_stock.latest_price) 
        new(name: looked_up_stock.company_name, 
            ticker: looked_up_stock.symbol, last_price: looked_up_stock.latest_price)

    rescue Exception => e 
        return nil
    end
end

log of output

log

Answer 1

where do you find @stack ?

you only respond with js if @stack is not nil

what is the value of @stack and where does it get that value?

def search
if params[:stock].present?
    @stock = Stock.new_form_lookup(params[:stock])
    if @stack 
        respond_to do |format|
          format.js { render partial: 'users/result' }
        end
    else
        flash[:danger] = "You have entered an incorrect symbol"
        redirect_to my_portfolio_path
    end

else
    flash[:danger] = "You have entered an empty search string"
    redirect_to my_portfolio_path
end