tappay-rails

An API wrapper for TapPay.

Notice

This library is using TapPay API v2. See the v2 docs [here|https://onedrive.live.com/download?cid=2E7ABBDC6C509913&resid=2E7ABBDC6C509913%215173&authkey=AH5sDA8pWBPnQ0U]

For v3 usage, please consider [tappay-ruby|https://github.com/hzchirs/tappay-ruby].

Installation

Add this line to your application's Gemfile:

gem 'tappay-rails', github: '5xRuby/tappay-rails'

And then execute:

$ bundle

Finally, run the install generator:

$ rails generate tap_pay:install

and setup the configurations in config/initializers/tappay.rb.

Installing Front-end Stuff

You'll need to require tappay in your JavaScript manifest. Place it after require jquery like this in application.js:

  //= require rails-ujs
  //= require turbolinks
  //= require jquery
+ //= require tappay

If you are not using jQuery in your project, you may need to require tappay_with_zepto instead because jQuery.payment depends on a jQuery-like lib.

  //= require rails-ujs
  //= require turbolinks
+ //= require tappay_with_zepto

Basic Usage

In The View

Place tappay_card_input in any form:

<%= form_for @order do |f| %>
  <%= tappay_card_input name: :credit_card %>
  <%= f.submit %>
<% end %>

Or, if you are using Simple Form 2.x, add as: :tappay_card to any desired input:

= simple_form_for @credit_card do |f|
  = f.input :data, as: :tappay_card
  = f.submit

Controller Side

You can create an TapPay::Response::CardInfo response object using the incoming params:

card = TapPay::Response::CardInfo.new(params[:credit_card])

card.prime          # => "1a836c4958c1525c7cf3b51bd90b1d3ad4e96dcc287867512f4d267ad4c1e794"
card.lastfour       # => "4242"
card.funding.to_s   # => "Credit Card"
card.funding.to_sym # => :credit_card
card.funding == 0   # => true
card.type.to_s      # => "VISA"
card.type.to_sym    # => :visa
card.type.to_i      # => 1

Or to assign the data to any model, you can write a method to permit the params passed in:

  def credit_card_params
    params.require(:credit_card).permit(data: [:prime, :bincode, :lastfour, :issuer, :funding, :type])
  end

Charge The User

After you get the prime (card.prime), you can use it whihin 30 seconds to ...

Make a one time charge

For example:

# All the shown arguments are required. For more info, see
# https://docs.tappaysdk.com/tutorial/zh/back.html#pay-by-prime-api
req = TapPay::Request::PayByPrime.new(
  prime: '977d9963e56edcc20b0c0b0351883f38666dc60f08d6fe0f3b6162f736b1ec5b',
  amount: 100,
  details: "An apple and a pen.",
  ptradeid: "TapPay_Test_001",
  cardholder: {
    name: "王小明",
    email: "[email protected]",
    phonenumber: "+886923456789"
  }
)

res = req.request

res.success? # => true
res.rectradeid # => "D20170626vb5MyJ" (this ID will be used for future refunding)
res.orderid # => "TP20170626vb5MyJ"
res.card_info.lastfour # => "4242"
# For more info of the respond object, see
# https://docs.tappaysdk.com/tutorial/zh/back.html#pay-by-prime-api

Get the card token (or also make a one time charge)

Since the prime can only be used once, we can get a card token and save it for future charging, without asking the user for their credit card number again.

To do this, set remember to true when using the PayByPrime API like this:

  req = TapPay::Request::PayByPrime.new(
    prime: '977d9963e56edcc20b0c0b0351883f38666dc60f08d6fe0f3b6162f736b1ec5b',
    amount: 100,
    details: "An apple and a pen.",
    ptradeid: "TapPay_Test_001",
    cardholder: {
      name: "王小明",
      email: "[email protected]",
      phonenumber: "+886923456789"
    },
+   remember: true
  )

Then, you can get the card token with the response:

res = req.request

res.success? # => true
res.card_secret.key # => "2ddb643f375dca31323c79e031ab6b5efbcdfa0294863642afbd9f3be87e032c"
res.card_secret.token # => "977d9963e56edcc20b0c0b0351883f38666dc60f08d6fe0f3b6162f736b1ec5b"

... and use them in the future like this:

# All the shown arguments are required. For more info, see
# https://docs.tappaysdk.com/tutorial/zh/back.html#pay-by-card-token-api
req = TapPay::Request::PayByCardToken.new(
  cardkey: '2ddb643f375dca31323c79e031ab6b5efbcdfa0294863642afbd9f3be87e032c',
  cardtoken: '977d9963e56edcc20b0c0b0351883f38666dc60f08d6fe0f3b6162f736b1ec5b',
  amount: 100,
  details: "An apple and a pen.",
  ptradeid: "TapPay_Test_001"
)

res = req.request
res.success? # => true
# For more info of the respond object, see
# https://docs.tappaysdk.com/tutorial/zh/back.html#pay-by-card-token-api

TODO: Instructions for not charging the user but only get a card token, or also checking the card balance.

TODO

• Wrap Refund API.
• Wrap Cap Today API.
• Wrap Record API.
• Write tests.

License

The gem is available as open source under the terms of the MIT License.