How to disable prepared statement in heroku with postgres database

Question

I fixed an issue on my rails project locally (with postgres config) while adding in database.yml this statement:

test:
  prepared_statements: false

Answer 1

As of Feb 19th 2014, heroku no longer overrides database.yml so you can turn off prepared statements in your production and staging (or default) block of the database.yml file as recommended by the latest docs:

default: &default
  adapter: postgresql
  encoding: unicode
  pool: 5
  prepared_statements: false

development:
  <<: *default
  database: myapp_development

test:
  <<: *default
  database: myapp_test

production:
  <<: *default
  url:  <%= ENV['DATABASE_URL'] %>
  pool: <%= ENV['DB_POOL'] || ENV['MAX_THREADS'] || 5 %>

staging:
  <<: *default
  url:  <%= ENV['DATABASE_URL'] %>
  pool: <%= ENV['DB_POOL'] || ENV['MAX_THREADS'] || 5 %>