I have a scenario where I need to dynamically create classes from
existing application (external to app) databases, to pull data for
reports.
# Table definitions
APP_TABLES = %w(#list of tables for a given app - I'm sure I could
query this on a simple connect. But let's stick to this for now.)
APP_TABLES.each do |table_name|
# camelize for class creation
class_name = table_name.camelize
klass = Class.new(App) # uses App class to establish_connection to
externalDB
klass = class_eval do
#unsure about this. I need to set table_name to same as class name
ActiveRecord::Base.set_table_name("#{class_name}")
ActiveRecord::Base.const_set(constant_name, klass)
end # class_eval
# After creating the class - I want to establish an instance - but it
says that the class does not exist - more specifically constant doesn't
exist.
eval("#{table_name} = #{class_name}.new")
I would love to hear thoughts on this, especially if I'm approaching
this incorrectly.
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