Custom resource default property logic

Chef Infra (archive)
1

I'm trying to add some custom logic for when a property gets passed in.

My Resource looks like this (website.rb):

 def bind( arg = nil )
     if arg.nil?

         # Split the fqdn on '.' to an array
         array = @fqdn.split('.')

         # Logic switching based on environment
         # Append dev/stage to fqdn as needed for environment
             case node.chef_environment
             when "dev", "stage"
                 set_or_return( :bind, "http/*:80:" << array[0] << "#{node.chef_environment}." << array[1] << "." << array[2], :kind_of => String )
             else
                 set_or_return( :bind, "http/*:80:" << @fqdn, :kind_of => String )
             end
     else
         set_or_return( :bind, arg, :kind_of => String )
     end
end

property :fqdn, String, name_property: true
property :username, String, default: node['test_iis']['username']
property :password, String, default: node['test_iis']['password']
property :docroot, String, default: "C:\\inetpub\\"
property :no_managed_code, [TrueClass, FalseClass], default: false

actions :create, :delete
default_action :create

action :create do
    # Create App Pool
    iis_pool "#{new_resource.fqdn}" do
        pipeline_mode :Integrated
        no_managed_code new_resource.no_managed_code
        action :add
    end



    iis_site "#{new_resource.fqdn}" do
        bindings new_resource.bind
        path "#{new_resource.docroot}"
        application_pool "#{new_resource.fqdn}"
        action [:add,:config,:start]
    end

    # Set the username for the folder
    iis_config_property 'username' do
        ps_path 'MACHINE/WEBROOT/APPHOST'
        filter "system.applicationHost/sites/site[@name='#{new_resource.fqdn}']/application[@path='/']/virtualDirectory[@path='/']"
        property 'userName'
        value "#{new_resource.username}"
    end

    # Set the password for the folder
    iis_config_property 'password' do
        ps_path 'MACHINE/WEBROOT/APPHOST'
        filter "system.applicationHost/sites/site[@name='#{new_resource.fqdn}']/application[@path='/']/virtualDirectory[@path='/']"
        property 'password'
        value "#{new_resource.password}"
    end

end


action :delete do

    # Delete site
    iis_site "#{new_resource.fqdn}" do
        action [:stop, :delete]
    end

    # Delete IIS Pool
    iis_pool "#{new_resource.fqdn}" do
        action :delete
    end

end

Trying call the website resource like:

test_iis_website "test.com" do
    docroot "C:\\inetpub\\test"
    no_managed_code true
end

and

puts case node.chef_environment
    when "dev"
        http = "http/*:80:test-dev.com"
    when "stage"
        http = "http/*:80:test-stage.com"
    else 
        http = "http/*:80:test.com"
end

test_iis_website "test2.com" do
    docroot "C:\\inetpub\\test2"
    no_managed_code true
    bind "#{http}"
end

I'm trying to do logic on "bind" so that if one is passed to just accept it. If one is not passed to derive it from the "fqdn" parameter based on what environment it is in.

When I do the code here it's like it is not picking up the "bind" parameter I am passing in.

I know I can do the logic in my action create but that just doesn't seem like a good solution to me.