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-rw-r--r--activerecord/lib/active_record/railtie.rb24
1 files changed, 23 insertions, 1 deletions
diff --git a/activerecord/lib/active_record/railtie.rb b/activerecord/lib/active_record/railtie.rb
index eef08aea88..2a8cd83285 100644
--- a/activerecord/lib/active_record/railtie.rb
+++ b/activerecord/lib/active_record/railtie.rb
@@ -43,11 +43,24 @@ module ActiveRecord
namespace :db do
task :load_config do
ActiveRecord::Tasks::DatabaseTasks.db_dir = Rails.application.config.paths["db"].first
- ActiveRecord::Tasks::DatabaseTasks.database_configuration = Rails.application.config.database_configuration
ActiveRecord::Tasks::DatabaseTasks.migrations_paths = Rails.application.paths['db/migrate'].to_a
ActiveRecord::Tasks::DatabaseTasks.fixtures_path = File.join Rails.root, 'test', 'fixtures'
ActiveRecord::Tasks::DatabaseTasks.root = Rails.root
+ configuration = if ENV["DATABASE_URL"]
+ { Rails.env => ENV["DATABASE_URL"] }
+ else
+ Rails.application.config.database_configuration || {}
+ end
+
+ resolver = ActiveRecord::ConnectionAdapters::ConnectionSpecification::Resolver.new(configuration)
+
+ configuration.each do |key, value|
+ configuration[key] = resolver.resolve(value) if value
+ end
+
+ ActiveRecord::Tasks::DatabaseTasks.database_configuration = configuration
+
if defined?(ENGINE_PATH) && engine = Rails::Engine.find(ENGINE_PATH)
if engine.paths['db/migrate'].existent
ActiveRecord::Tasks::DatabaseTasks.migrations_paths += engine.paths['db/migrate'].to_a
@@ -122,6 +135,15 @@ module ActiveRecord
# and then establishes the connection.
initializer "active_record.initialize_database" do |app|
ActiveSupport.on_load(:active_record) do
+
+ class ActiveRecord::NoDatabaseError
+ remove_possible_method :extend_message
+ def extend_message(message)
+ message << "Run `$ bin/rake db:create db:migrate` to create your database"
+ message
+ end
+ end
+
self.configurations = app.config.database_configuration || {}
establish_connection
end