Hoc Survey 2014 Prize Code Claiming

Author: geoffrey-elliott

pegasus/forms/hoc_survey_2014.rb

@@ -0,0 +1,22 @@
+class HocSurvey2014
+  
+  def self.claim_prize_code(type, user_id, params={})
+    ip_address = params[:ip_address] || request.ip
+  
+    begin
+      rows_updated = DB[:hoc_survey_prizes].where(claimant:nil, type:type).limit(1).update(
+        claimant:user_id,
+        claimed_at:DateTime.now,
+        claimed_ip:ip_address,
+      )
+      raise StandardError, "Out of '#{type}' codes." if rows_updated == 0
+    rescue Sequel::UniqueConstraintViolation
+      # This user has already claimed a prize, the query below will return that existing prize.
+    rescue
+      raise
+    end
+
+    DB[:hoc_survey_prizes].where(claimant:user_id).first
+  end
+
+end

pegasus/migrations/62_create_hoc_survey_prizes_table.rb

@@ -0,0 +1,17 @@
+Sequel.migration do
+  up do
+    create_table?(:hoc_survey_prizes, charset:'utf8') do
+      primary_key :id
+      String :type, null:false, index:true
+      String :value, null:false
+
+      foreign_key :claimant, unique:true, index:true
+      DateTime :claimed_at
+      String :claimed_ip, size:39
+    end
+  end
+
+  down do
+    drop_table(:hoc_survey_prizes)
+  end
+end