更新與設定值某一列

Question

我有一組有我的商店內信貸客戶，我試圖找到自己的當前餘額，然後用一個新的平衡調整，但這樣做我不斷收到的無效時但我不能爲生活工作了爲什麼這是

控制器

class Admin::UserDatas::StoreCreditsController < Admin::UserDatas::BaseController 
    helper_method :customer 
    def show 
    @store_credit = customer.store_credit 
    end 

    def edit 
    form_info 
    end 

    def update 
    result = Braintree::Transaction.sale(
     :amount => :amount_added, 
     :customer_id => customer.customer_cim_id, 
     :options => { 
      :submit_for_settlement => true 
     } 
    ) 
    if result.success? 
     p 'Transaction Successful' 
     customer.store_credit.add_credit(:amount_added) 
     redirect_to admin_user_datas_user_store_credits_url(customer), :notice => "Successfully updated store credit." 
    else 
     result.errors.each do |error| 
     puts error.message 
     customer.errors.add(:base, error.message) 
     form_info 
     render :edit, :notice => error.message 
     end 
    end 
    end 

    private 
    def form_info 

    end 

    def customer 
    @customer ||= User.includes(:store_credit).find(params[:user_id]) 
    end 

    def amount_added 
    params[:amount_to_add].to_f 
    end 

end 

方法

def remove_credit(amount_to_remove) 
    credit_amount = "#{self.amount} - #{amount_to_remove.to_f.round(2)}" 
    self.update(amount: credit_amount) 
    end 

    def add_credit(amount_to_add) 
    credit_amount = "#{self.amount} + #{amount_to_add.to_f.round(2)}" 
    self.update(amount: credit_amount) 
    end 

FORM局部

個

%ul.admin-standard_form.prepend-8{:id => ""} 
    %li.field 
    = label :amount_to_add, 'Amount to Add' 
    = text_field_tag :amount_to_add 

編輯模板

%h3 
    Change #{customer.name} Store Credit 
%ul 
    %li 
    %label Current Amount: 
    = number_to_currency customer.store_credit_amount 
= form_for customer, :url => admin_user_datas_user_store_credits_path(customer) do |f| 
    = render :partial => 'form', :locals => {:f => f} 
    .actions= f.submit 'Update' , :class => 'button' 

錯誤

Started PATCH "/en/admin/user_datas/users/1/store_credits" for 127.0.0.1 at 2016-06-24 21:56:08 +1000 
Processing by Admin::UserDatas::StoreCreditsController#update as HTML 
    Parameters: {"utf8"=>"✓", "authenticity_token"=>"[FILTERED]", "amount_to_add"=>"200", "commit"=>"Update", "locale"=>"en", "user_id"=>"1"} 
    User Load (0.5ms) SELECT "users".* FROM "users" WHERE "users"."remember_token" = $1 ORDER BY "users"."id" ASC LIMIT 1 [["remember_token", "cfe807bd1caa3763df52dcb18de8c9d4f350b933"]] 
    User Load (0.3ms) SELECT "users".* FROM "users" WHERE "users"."id" = $1 LIMIT 1 [["id", 1]] 
    StoreCredit Load (0.5ms) SELECT "store_credits".* FROM "store_credits" WHERE "store_credits"."user_id" IN (1) 
I, [2016-06-24T21:56:09.418606 #8775] INFO -- : [Braintree] [24/Jun/2016 11:56:09 UTC] POST /merchants/XXXX/transactions 422 
Amount is an invalid format. 
    Rendered admin/user_datas/store_credits/_form.html.haml (0.7ms) 
    Rendered admin/user_datas/store_credits/edit.html.haml within layouts/superman (4.0ms) 
    Rendered shared/_meta_data.html.haml (4.6ms) 
    Rendered admin/shared/_side_menu.html.haml (2.8ms) 
Completed 200 OK in 1085ms (Views: 47.2ms | ActiveRecord: 1.3ms) 

更多的錯誤

Started PATCH "/en/admin/user_datas/users/1/store_credits" for 127.0.0.1 at 2016-06-24 22:20:46 +1000 
Processing by Admin::UserDatas::StoreCreditsController#update as HTML 
    Parameters: {"utf8"=>"✓", "authenticity_token"=>"[FILTERED]", "amount_to_add"=>"20", "commit"=>"Update", "locale"=>"en", "user_id"=>"1"} 
    User Load (0.4ms) SELECT "users".* FROM "users" WHERE "users"."remember_token" = $1 ORDER BY "users"."id" ASC LIMIT 1 [["remember_token", "cfe807bd1caa3763df52dcb18de8c9d4f350b933"]] 
    User Load (0.3ms) SELECT "users".* FROM "users" WHERE "users"."id" = $1 LIMIT 1 [["id", 1]] 
    StoreCredit Load (0.5ms) SELECT "store_credits".* FROM "store_credits" WHERE "store_credits"."user_id" IN (1) 
I, [2016-06-24T22:20:50.681897 #8775] INFO -- : [Braintree] [24/Jun/2016 12:20:50 UTC] POST /merchants/mbmb637xwpzgxbrd/transactions 201 
"Transaction Successful" 
    (0.2ms) BEGIN 
    (0.2ms) ROLLBACK 
Redirected to http://0.0.0.0:3000/en 
Completed 302 Found in 3848ms (ActiveRecord: 1.6ms) 

Answer 1

的問題是在你update行動

你傳遞錯誤的價值amount場Braintree::Transaction你逝去的:amount_added（這是一個符號），而不是實際的量是params[:amount_to_add]這就是爲什麼這個錯誤發生。它說無效的數量類型。所以更新您的行動

def update 
    result = Braintree::Transaction.sale(
     :amount => params[:amount_to_add].to_f, 
     :customer_id => customer.customer_cim_id, 
     :options => { 
      :submit_for_settlement => true 
     } 
    ) 
    if result.success? 
     p 'Transaction Successful' 
     customer.store_credit.add_credit(params[:amount_to_add].to_f) 
     redirect_to admin_user_datas_user_store_credits_url(customer), :notice => "Successfully updated store credit." 
    else 
     result.errors.each do |error| 
     puts error.message 
     customer.errors.add(:base, error.message) 
     form_info 
     render :edit, :notice => error.message 
     end 
    end 
    end 

PS同樣是customer.store_credit.add_credit(:amount_added) 改變它customer.store_credit.add_credit params[:amount_to_add]

的情況下更新

變化add_credit方法

def remove_credit(amount_to_remove) 
    credit_amount = self.amount - amount_to_remove.to_f.round(2) 
    self.update(amount: credit_amount) 
    end