访问帕拉姆模型

Question

我知道这是你无法轨道内做还是不应该做的，但我需要以某种方式获得了用户在表单的字段输入查询的数量和使用该值。

这是我的模型看起来像

class Deposit < ActiveRecord::Base 
    belongs_to :credit_card 
    belongs_to :user 

    validates :credit_card,   presence: true 
    validates :user,     presence: true 
    validates :tx_type,    inclusion: %w(debit credit) 
    # validates :amount,    presence: true, numericality: true 

    before_create :add_transaction_to_merchant 
    after_create :update_user_balance 
    attr_readonly :credit_card_id, :user_id, :fee_id, :tx_type, :status, :merchant_tx_id 

    attr_accessible :tx_type, :amount, :status, :merchant_tx_id, :credit_card_id, 
        :user_id, :user 

    def amount 
    return attributes[:amount] if attributes[:amount] 
    set_amount 
    end 

    def tx_type 
    attributes[:tx_type] || 'debit' 
    end 

    def send_receipt 
    Resque.enqueue(PaymentCompletedSender, self.id) 
    end 

    def update_user_balance 
    user_balance =user.balance + set_amount 
    user.balance = user_balance 
    user.save 
    end 

    private 

    def add_transaction_to_merchant 
    set_amount 
    return false if credit_card.nil? 
    return true unless amount > 0 
    result = Braintree::Transaction.sale(
     amount: amount, 
     payment_method_token: credit_card.token, 
     options: { submit_for_settlement: true } 
    ) 

    if result.success? 
     self.merchant_tx_id = result.transaction.id 
     # status will be authorized or submitted_for_settlement 
     self.status = result.transaction.status 
    else 
     errors.add(:base, result.message) 
     if result.transaction.nil? 
     # validation errors prevented transaction from being created 
     logger.error(result.errors) 
     else 
     self.merchant_tx_id = result.transaction.id 
     # status will be processor_declined, gateway_rejected, or failed 
     self.status = result.transaction.status 
     end 
    end 
    end 

    def set_amount 
    attributes[:amount] 
    end 

end 

控制器：

# POST /deposits 
    # POST /deposits.json 
    def create 
    @deposit = Deposit.new(params[:deposit]) 
    @deposit.user = current_user 
    @deposit.credit_card = current_user.credit_cards.try(:first) 

    binding.pry 
    respond_to do |format| 
     if @deposit.save 
     format.html { redirect_to "/", notice: 'Deposit was successfully created.' } 
     format.json { render json: @deposit, status: :created, location: @deposit } 
     else 
     format.html { render action: "new" } 
     format.json { render json: @deposit.errors, status: :unprocessable_entity } 
     end 
    end 
    end 

这是什么PARAMS形式发送

{"utf8"=>"✓", 
"authenticity_token"=>"r0M0sRr7QO9kl0IWrJSgvj45DFrC6mbbuA+ttgEaUI0=", 
"deposit"=>{"amount"=>"100"}, 
"commit"=>"Pay Now"} 

如何退回任何想法模型中表单的金额值？

Answer 1

你这样做对吗？ @deposit = Deposit.new(params[:deposit])如果您删除在模型中amount和set_amount方法，你应该能够只使用模型amount或self.amount所以下面应该足够

def add_transaction_to_merchant 
    return false if credit_card.nil? 
    return true unless amount > 0 

    result = Braintree::Transaction.sale(
    amount: amount, 
    payment_method_token: credit_card.token, 
    options: { submit_for_settlement: true } 
)