app/models/school.rb in scidea-schools-1.0.5 vs app/models/school.rb in scidea-schools-1.0.6

@@ -12,10 +12,12 @@
   validates_presence_of :zipcode
   validates_presence_of :phone
 
   validate :zipcode_formatting
   validate :phone_formatting
+  
+  before_destroy :do_not_delete_if_dependencies
 
   ZIPCODE_PATTERN = /^[\d]{5}$/
 
   # Class methods
 
@@ -86,8 +88,16 @@
     errors[:phone] << "must be at least 10 digits long" unless self.phone.nil? || self.phone.empty? || self.phone.size >= 10
   end
 
   def zipcode_formatting
     errors.add(:zipcode, "must be five numbers") unless zipcode && zipcode.match(ZIPCODE_PATTERN)
+  end
+  
+  def do_not_delete_if_dependencies
+    # if any users have this school, do not delete it
+    if self.profiles.count > 0
+      self.errors.add(:base, "Educational institution #{self.name} was not deleted because it is tied to user profiles. Before deleting #{self.name} use the migration feature to migrate these users to other educational institutions.")
+      return false
+    end
   end
 
 end