Money-Rails Gem:模型中的Humanized_money

Question

在我的捐款模型中，我已经将amount_cents列货币化了

我需要人道版本的捐款金额(例如。643.50)在模型中，这样我就可以生成并发送一个PDF收据给捐献者。

我尝试过humanized_money(self.amount)和self.amount.humanized_money，但是得到了错误：

NoMethodError: undefined method `humanized_money' for #<Donation:0x007fa687ebb678>

我怎样才能在模型中得到这种人性化的形式？

class Donation < ActiveRecord::Base
  belongs_to :donatable, polymorphic: true
  belongs_to :added_by_user, foreign_key: "added_by", class_name: "User"

  store_accessor :details, :method

  monetize :amount_cents

  def donations_this_week(branch_id)
    sum =  Donation.sum(:amount_cents).to_money
    return humanized_money(sum)
  end

  def receipt
    Receipts::Receipt.new(
        id: id,
        product: "GoRails",
        message: "This receipt is to acknowledge that we have received a donation with the below details from #{self.donatable.name}",
        company: {
            name: self.donatable.branch.organization.name,
            address: "#{self.donatable.branch.address_line_1}\n#{self.donatable.branch.address_line_2}\n#{self.donatable.branch.email}\n#{self.donatable.branch.legal_details}",
            email: self.donatable.branch.email,
            logo: self.donatable.branch.organization.logo.url(:medium),
        },
        line_items: [
            ["Date",           created_at.to_s],
            ["Donor Name", self.donatable.name],
            ["Amount",         humanized_money(self.amount)],
            ["Payment Method",     self.method],
        ]
    )
  end
end

以下是数据库模式：

create_table "donations", force: :cascade do |t|
t.string   "donatable_type"
t.integer  "donatable_id"
t.integer  "amount_cents"
t.datetime "created_at",                  null: false
t.datetime "updated_at",                  null: false
t.datetime "date"
t.integer  "added_by"
t.jsonb    "details",        default: {}, null: false

Answer 1

不需要在模型中包括助手。

price_options = {
  :no_cents_if_whole => MoneyRails::Configuration.no_cents_if_whole.nil? ? true : MoneyRails::Configuration.no_cents_if_whole,
  :symbol => true
}
your_money_column.format(price_options)

github上的源代码

Answer 2

在不加载ActionView::Base中的所有内容的情况下执行此操作。你可以直接做

return ActionController::Base.helpers.humanized_money sum

Answer 3

包括ActionView::Base将为您的模型添加许多额外的内容，不要这样做。

取而代之的是这样做：

include MoneyRails::ActionViewExtension

这样，您就可以获得所有的money视图助手方法(在本文发布时为5)。