如果条形码中的收费日期相同，所有金额的总和

Question

我正在遍历stripe charge object，我想总计每天的总计amount。

# Returns an array object of charges for a customer 
@customer_charges = Stripe::Charge.all(:customer => current_user.stripeid) 

浏览：

<% @customer_charges.map do |c| %> 
    On Monday, you were charged a total of <%= c.amount %> 
<% end %> 

当然上面做无非是每个收费输出线以上，但不是当天的总和。我面临的困难是总结每一天的所有费用。有人能指出我正确的方向吗？

输出会是这样：

"On Monday, you were charged a total of 200000" 
"On Tueesday, you were charged a total of 500000" 
etc... 

相反的：

On Monday, you were charged a total of 100000" 
On Monday, you were charged a total of 100000" 
etc... 

我view看起来杂乱无章与if statements线比较日期，并且看起来不正确的。

Answer 1

你需要通过条纹每次充电对象上进行迭代，存储量和每个负责解析日期：

# Fetch charges in batches of 100 records from Stripe API, yield each individual charge to a block. 
def each_stripe_charge_for_customer(customer_id) 
    starting_after = nil 
    loop do 
    customer_charges = Stripe::Charge.all(customer: customer_id, limit: 100, starting_after: starting_after) 
    break if customer_charges.none? 
    charges.each do |charge| 
     yield charge 
    end 
    starting_after = charges.data.last.id 
    end 
end 

charges_by_date = Hash.new(0) 

# For each Stripe charge, store the date and amount into a hash. 
each_stripe_charge_for_customer(current_user.stripeid) do |stripe_charge| 
    # Parses Stripe's timestamp to a Ruby date object. `to_date` converts a DateTime object to a date (daily resolution). 
    charge_date = Time.at(stripe_charge.created).to_date 
    charge_amount = stripe_charge.amount 

    charges_by_date[charge_date] += charge_amount 
end