Blog

Feb
25

Because l still forget how to do copyright and trademark symbols in HTML

Posted by Michael Cindric in Tutorials, development, html, web standards | No Comments »

Not matter how many times l do it l still never remember how to to the Copyright and Trademark symbols in HTML code so here they are

© can be created with this:

©

® can be created with this:

®

™ can be created with this:

™
Oct
30

PayFlow recurring billing with ActiveMerchant

Today we are going to look at using ActiveMerchant to set up a recurring billing subscription with PayFlow .

PayFlow is Paypal’s payment gateway and you need to setup a PayFlow account.
IMPORTANT! This is separate from Paypal’s development sandbox. Follow these steps to setup a Payflow testing account

  1. Go to https://www.paypal.com/cgi-bin/webscr?cmd=_payflow-get-started-outside
    and fill in the details for an account.
  2. When you get to the page where you need to enter your payment information, hit Save and Exit. This will create a testing PayFlow account for you.
  3. You will be sent an email with your partner ID and your vendor login. Take note of your partner ID as this will be important later.
  4. You should now be able to login at https://manager.paypal.com/

Now that you have a PayFlow account, you can use ActiveMerchant to setup payments. For now we will muck around in irb to test that methods out.

So lets open up irb and start by including the active merchant gem and setting ActiveMerchant to test mode

kongy@Deadpool: $ irb
irb(main):001:0> require 'rubygems'
irb(main):002:0> require 'active_merchant'
irb(main):003:0> ActiveMerchant::Billing::Base.mode = :test

Now lets setup the gateway.

gateway = ActiveMerchant::Billing::PayflowGateway.new(:login => 'PAYFLOW_LOGIN', :password => 'PAYFLOW_PASSWORD', :partner => 'PARTNER_ID')

This creates the gateway that we will be using to request purchases. By default ActiveMerchant passes PAYPAL as the partner value if you leave it out. I believe that this is the default for US PayFlow account. For my Aussie one, I received a VSA partner_id. I would suggest putting it in there anyway.

PayFlow Testing only accepts testing credit cards numbers.  You can grab them from the PayFlow recurring billing documentation found here. Here is a quick list which I can’t guarantee will be up to date.

American Express 378282246310005
American Express 371449635398431
American Express Corporate 378734493671000
Diners Club 30569309025904
Diners Club 38520000023237
Discover 6011111111111117
Discover 6011000990139424
JCB 3530111333300000
JCB 3566002020360505
MasterCard 5555555555554444
MasterCard 5105105105105100
Visa 4111111111111111
Visa 4012888888881881
Visa 4222222222222

So lets create a Mastercard credit card.

irb(main):004:0> credit_card = ActiveMerchant::Billing::CreditCard.new( :number => '5105105105105100', :month => '9', :year => '2007', :first_name => 'Mal', :last_name => 'Reynolds', :verification_value => '123', :type => 'master' )

Now we are ready to start billing. If you want to setup a one time payment it is quite easy.

irb(main):007:0> response = gateway.purchase(1000, credit_card)
irb(main):008:0> response.success?
=> true

If you go into your Paypal Manager and search for transactions you should see it appear.

To setup a recurring billing we need to use the recurring method of the gateway. The recurring method accepts the amount in cents, the credit card object and the time intervals to charge the card, at a minimum. There are other options available which you can find here. Lets charge $10/month

irb(main):009:0> response = gateway.recurring(100, credit_card, :periodicity => :monthly)
irb(main):010:0> response.success?
=> true
irb(main):011:0> response.profile_id
=> "RT0000000002"

You can view the recurring billings in your Paypal Manager by clicking on Service Settings > Recurring Billings > Manage Profiles. You will probably want to store the profile_id in your database for when you need to edit details of the recurring billing. You can do it quite simply by calling the recurring method again. Let’s change the amount we want to bill to $20/week.

irb(main):0012:0> response = gateway.recurring(2000, nil, :profile_id => "RT0000000001",  :periodicity => :weekly)
irb(main):013:0> response.success?
=> true

You can see here that we no longer need to pass in the credit card since we have the profile_id. We update the amount, and change the periodicity of the billing.

And that’s it.

Sep
29

When to use Nested Controllers in your Rails apps

Posted by Michael Cindric in Tutorials, development, ruby on rails | 2 Comments »

Nested controllers are great. I don’t care that they have a stigma attached to them they work well and make sense especially if your rails application has a Admin section for example. This allows you to easy separate the admin logic into its own controllers etc keeping your code clean and easy to manage.

So thats what we are going to do for this example.

Step 1. Create your admin controller

You can use whichever process works best for you, but for this we are going to use script/generate:

 ./script/generate controller admin

Step 2. Create your user controller

You can use whichever process works best for you, but for this we are going to use script/generate:

 ./script/generate controller admin/users

Step 3. Check to ensure proper inheritance

The nested users controller should look something like so:

class Admin::UsersController < ApplicationController
end

Step 4. Create the Routes

The nested users controller should look something like so:

map.namespace :admin do |admin|
  admin.resources :users
end

Before rails 2+ you had to do like like we have below. Personally l don’t mind it makes it a little easier to read but either option works fine

map.resource(:admin) do |admin|
  admin.resources(:users, :controller => 'admin/users')
end

Step 5. Wait there is no step 5 your done

Now when you need to link to any of these actions its very simple keeping in mind that users is nested under the admin controller so all you have to do to create a link that goes to the index action on the nested users controller is add the admin prefix before

 link_to "Users", admin_users_url

The same applies when you are wanting to link to the show action of users all you do is loose the “s” on users as you would normally

 link_to "View User", admin_user_url(@user)

You can see a list of all the routes you have available to you by going to the root directory of your project in terminal and typing

rake routes