如何从Rails中的其他类获取价值

时间：2022-11-15 21:44:21

I'm not sure if I am phrasing this question correctly. I am using the Stripe API for a Harry Potter themed Rails online store demo app. I followed the Stripe boilerplate code, so I currently have the amount set at a hardcoded value of $1.00. In my shopping cart, there is a method that displays the total cost of all items in the cart. That works fine, but I can't figure out how to pass that value to the Charges controller so that it sets that as the amount of the payment.

我不确定我是否正确地表达了这个问题。我正在使用Stripe API为Harry Potter主题的Rails在线商店演示应用程序。我遵循Stripe样板代码，所以我目前的金额设置为$ 1.00的硬编码值。在我的购物车中，有一种方法可以显示购物车中所有商品的总成本。这工作正常，但我无法弄清楚如何将该值传递给Charges控制器，以便将其设置为付款金额。

I'm fairly new to Rails, so any helpful explanations would be greatly appreciated.

我对Rails相当新，所以任何有用的解释都将不胜感激。

Here is my charges/new.html.erb file:

这是我的charge / new.html.erb文件：

<%= form_tag charges_path do %>
  <article>
    <% if flash[:error].present? %>
      <div id="error_explanation">
        <p><%= flash[:error] %></p>
      </div>
    <% end %>
    <label class="amount">
      <span>Amount: $1.00</span>
    </label>
  </article>

  <script src="https://checkout.stripe.com/checkout.js" class="stripe-button"
          data-key="<%= Rails.configuration.stripe[:publishable_key] %>"
          data-description="A month's subscription"
          data-amount="100"
          data-locale="auto"></script>
<% end %>

Here is my Charges controller:

这是我的Charges控制器：

class ChargesController < ApplicationController
    include CurrentCart
    before_action :set_cart, only: [:new, :create]

    def new
    end

    def create #METHOD IS CALLED AFTER PAYMENT IS MADE
     # Amount in cents
     @amount = 100

     customer = Stripe::Customer.create(
       :email => params[:stripeEmail],
       :source  => params[:stripeToken]
     )

     charge = Stripe::Charge.create(
       :customer    => customer.id,
       :amount      => @amount,
       :description => 'Witch or Wizard',
       :currency    => 'usd'
     )

     Cart.destroy(session[:cart_id]) 

    rescue Stripe::CardError => e
      flash[:error] = e.message
      redirect_to new_charge_path
    end 

end

Here is my carts/show.html.erb file:

这是我的carts / show.html.erb文件：

<p id="notice"><%= notice %></p>

<h2>My Cart</h2>
<table class="table table-responsive table-striped">
    <thead>
        <tr>
            <th>Item</th>
            <th>Quantity</th>
            <th>Total Price in Galleons</th>
            <th>Total Price in Muggle Currency</th>
        </tr>
        <tbody>
            <%= render(@cart.line_items) %>
            <tr>
                <td>Total</td>
                <td><%= number_to_currency(@cart.total_price * 7.35) %></td>
                <td></td>
                <td></td>
            </tr>
        </tbody>
    </thead>
</table>

<br>

<div class="row">
    <div class="col-md-3">
        <div class="row">
            <div class="col-md-4">
                <%= link_to 'Back', products_path, :class => 'btn btn-primary whiteText' %>
            </div>
            <div class="col-md-4">
                <%= link_to "Checkout", new_charge_path, :class => 'btn btn-success whiteText' %>

            </div>
            <div class="col-md-4">
                <%= link_to 'Empty Cart', @cart, method: :delete, data: {confirm: 'Are you sure you want to empty your cart?'}, :class => 'btn btn-danger whiteText' %>
            </div>
        </div>
    </div>
    <div class="col-md-9"></div>
</div>

Here is my Carts controller:

这是我的推车控制器：

class CartsController < ApplicationController
  before_action :set_cart, only: [:show, :edit, :update, :destroy]
  rescue_from ActiveRecord::RecordNotFound, with: :invalid_cart

  # GET /carts
  # GET /carts.json
  def index
    @carts = Cart.all
  end

  # GET /carts/1
  # GET /carts/1.json
  def show
  end

  # GET /carts/new
  def new
    @cart = Cart.new
  end

  # GET /carts/1/edit
  def edit
  end

  # POST /carts
  # POST /carts.json
  def create
    @cart = Cart.new(cart_params)

    respond_to do |format|
      if @cart.save
        format.html { redirect_to @cart, notice: 'Cart was successfully created.' }
        format.json { render :show, status: :created, location: @cart }
      else
        format.html { render :new }
        format.json { render json: @cart.errors, status: :unprocessable_entity }
      end
    end
  end

  # PATCH/PUT /carts/1
  # PATCH/PUT /carts/1.json
  def update
    respond_to do |format|
      if @cart.update(cart_params)
        format.html { redirect_to @cart, notice: 'Cart was successfully updated.' }
        format.json { render :show, status: :ok, location: @cart }
      else
        format.html { render :edit }
        format.json { render json: @cart.errors, status: :unprocessable_entity }
      end
    end
  end

  # DELETE /carts/1
  # DELETE /carts/1.json
  def destroy
    @cart.destroy if @cart.id == session[:cart_id]
    session[:cart_id] = nil
    respond_to do |format|
      format.html { redirect_to root_path, notice: 'Cart was emptied.' }
      format.json { head :no_content }
    end
  end

  def update_quantity
    @line_item.update_attribute(:quantity)
  end

  private
    # Use callbacks to share common setup or constraints between actions.
    def set_cart
      @cart = Cart.find(params[:id])
    end

    # Never trust parameters from the scary internet, only allow the white list through.
    def cart_params
      params.fetch(:cart, {})
    end

    def invalid_cart
      logger.error "Attempt to access invalid cart #{params[:id]}"
      redirect_to root_path, notice: 'Invalid cart'
    end
end

Here is my Cart model:

这是我的购物车型号：

class Cart < ApplicationRecord
    has_many :line_items, dependent: :destroy

    def add_product(product)
        current_item = line_items.find_by(product_id: product.id)
        if current_item
            current_item.quantity += 1
        else
            current_item = line_items.build(product_id: product.id)
        end
        current_item
    end

    def total_price
       line_items.to_a.sum {|item| item.total_price} 
    end

    def convert_to_muggle(galleons)
        line_items.to_a.sum {|item| item.convert_to_muggle} 
    end    

end

And here is my routes file:

这是我的路线文件：

Rails.application.routes.draw do


  resources :charges
  resources :orders
  resources :line_items
  resources :carts
  devise_for :users
  match 'users/:id' => 'users#destroy', :via => :delete, :as => :admin_destroy_user
  resources :users, only: [:index, :show, :edit, :update]

  root 'products#index'

  resources :products

  controller :products do
    post '/products/destroy' => 'products#destroy', as: :destroy
    get '/products/add_to_cart' => 'products#add_to_cart', as: :add_to_cart
    get '/products/remove_from_cart' => 'products#remove_from_cart', as: :remove_from_cart
  end

  controller :line_items do 
    post '/line_items/increase_quantity' => 'line_items#increase_quantity', as: :increase_quantity
  end

  # For details on the DSL available within this file, see http://guides.rubyonrails.org/routing.html
end

1 个解决方案

#1

1  

In your charges_controller, change the amount:

在您的charge_controller中，更改金额：

@amount = @cart.total_price * 735

And your charges/new.html.erb:

你的收费/ new.html.erb：

<span>Amount: <%= number_to_currency(@cart.total_price * 7.35) %></span>

and

和

data-amount="<%= @cart.total_price * 735 %>"

Let me know if that helps.

如果有帮助，请告诉我。

#1

1  

In your charges_controller, change the amount:

在您的charge_controller中，更改金额：

@amount = @cart.total_price * 735

And your charges/new.html.erb:

你的收费/ new.html.erb：

<span>Amount: <%= number_to_currency(@cart.total_price * 7.35) %></span>

and

和

data-amount="<%= @cart.total_price * 735 %>"

Let me know if that helps.

如果有帮助，请告诉我。

标签：

相关文章