I've heard that you can tie a model in rails to a database view (instead of a table as per usual) and that this is dome simply by creating a view with the name that the model's table would ordinarily have.
I am not getting this to work in rails 3.0.5 with PostgreSQL 9.
Is there something I am missing?
Rails in it's postgresql adapter didn't look in pg_views
view for it's models.
You should name views with some names, your normal models do.
You could create little hack, like this to solve this problem:
# -*- encoding: utf-8 -*-
ActiveSupport.on_load(:active_record) do
ActiveRecord::ConnectionAdapters::PostgreSQLAdapter.class_eval do
def table_exists?(name)
return true if super
name = name.to_s
schema, table = name.split('.', 2)
unless table # A table was provided without a schema
table = schema
schema = nil
end
if name =~ /^"/ # Handle quoted table names
table = name
schema = nil
end
query(<<-SQL).first[0].to_i > 0
SELECT COUNT(*)
FROM pg_views
WHERE viewname = '#{table.gsub(/(^"|"$)/,'')}'
#{schema ? "AND schemaname = '#{schema}'" : ''}
SQL
end
end
end
Place this into file RAILS_ROOT/config/initializers/postgresql_view_support.rb
.
PS:
This code is for Rails 3.0.5.
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With