heroku rails console

The program initially uses the sqlite3 database. Modify the Gemfile file to add the Support group: productiondo # gemsspecificallyforHerokugoheregem "pg" endbundleinstall to the heroku deployment to pre-compile some files. Otherwise, the bundleexecrakeassets will error on heroku: The program initially uses the sqlite3 database. Modify the Gemfile file, and add pg support to

The program was originally used by the Sqlite3 database. Modify the Gemfile file to add PG support for Heroku deployment Group:p Roduction Do # Gems specifically for Heroku go Gem "PG" End Bundle Install Precompile some files, otherwise there will be an error on the HerokuBundle EXEC Rake Assets:precompile Publish application to GitHub top$ git Add.$ git commit-a-M "Done with the demo app"Done with

1, Purpose: Use Heroku to deploy the development environment to the production environment. Heroku is dedicated to deploying rails and other Web applications, and the process of deploying rails applications is straightforward-as long as the source code is incorporated into the GIT version control system.2. Build

Premise: Already installed Ruby, Rails, Git =============================================================== Setup Heroku for the first time $sudo Gem Install Heroku Set Heroku account number, need email and password, please apply for free in http://www.heroku.com/ $ Heroku K

createposts:migrated (0.0029s) =============================　Accessing the model from the consoleEntering the console, similar to the Django Manage Shell directive, ROR uses the following command:Rails ConsoleAbbreviated to Rails CNew records:Model class. New model instance variable. Save2.1.5:001 > P = post.new (: title = "My first post",:context=> "This is My first post") = = # (0.5MS) BEGIN TRANSA

Label: exec Rails c IRB (main):008:0> r = Activerecord::base.connection.execute'Show CREATE Database Ott_remote_cms_production'=#IRB (main):009:0> R.each {|row|puts row} ott_remote_cms_production CREATE DATABASE ' cms_production '/*!40100 DEFAULT CHARACTER SET UTF8 */= [["cms_production","CREATE DATABASE ' ott_remote_cms_production '/*!40100 DEFAULT CHARACTER SET UTF8 * /"]] > r = Activerecord::base.connection.execute'Show Tables'=#IRB (main):016:0>