How to reverse a rails generate

Question

I want to delete all the files it created and roll back any changes made  but not necessarily to the database  but more to the config files   I d like to automatically delete all the resource mappings for the model controller deleted in the routes rb file and everywhere else that changes might have been made

User · Answer

To reverse rails generate  use rails destroy   rails destroy Model   See  rails destroy  for more information

User · Answer

Suppose I have created a controller named  sample  like   rails generate controller sample   If I have to destroy this controller  all I have to do is swap generate with destroy  as in   rails destroy controller sample    If you want to reverse the generation  all you have to do is swap  generate with destroy

User · Answer

To reverse that  we just destroy it  Open the Terminal application and go to the project directory  then  type this   rails destroy model CamelCase rails destroy controller CamelCase   Where CamelCase is a name of any model or controller  It will remove the model  migration and some of the related test files   You can see the result in the Terminal window after you have run the command

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This is a prototype to generate or destroy a controller or model in Rails   rails generate destroy controller model  controller model Name    For example  if you need to generate a User Controller   rails generate controller User   or  rails g controller User   If you want to destroy the User controller or revert to above action then use   rails destroy controller User   or   rails d controller User

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rails destroy controller Controller name was returning a bunch of errors  To be able to destroy controller I had to remove related routes in routes rb  P S  I m using rails 3 1

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Removed scaffolding for selected model   bin rails d scaffold  lt AccessControl gt    model name

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You can destroy all things that was created same way except little thing change  For controller   rails d controller name  d stands for destroy    For Model  rails d model name   you just put d destroy  instead of g generate  in your migration

User · Answer

It s worth mentioning the -p flag here   p  for pretend     If you add this to the command it will simply do a  test  run and show you what files will be deleted without actually deleting them     rails d controller welcome -p    remove  app controllers welcome controller rb   invoke  erb   remove    app views welcome   invoke  test unit   remove    test controllers welcome controller test rb   invoke  helper   remove    app helpers welcome helper rb   invoke    test unit   remove      test helpers welcome helper test rb   invoke  assets   invoke    coffee   remove      app assets javascripts welcome js coffee   invoke    scss   remove      app assets stylesheets welcome css scss   If you re happy with it  run the command again without the -p flag

User · Answer

You can revert your  rails g generate controller model migration xxx   output by using    rails d destroy controller model migration xxx

User · Answer

rails destroy controller lalala rails destroy model yadayada rails destroy scaffold hohoho   Rails 3 2 adds a new d shortcut to the command  so now you can write   rails d controller lalala rails d model yadayada rails d scaffold hohoho

User · Answer

All versions of rails have a  destroy   so-  if you create a  for example  scaffold named  tasks  using a generator  to destroy all the changes of that generate step you will have to type   rails destroy scaffold Tasks   Hope it helps you

User · Answer

Before reverting the rails generate  please make sure you rollback the migration first   Case 1  if you want to revert scaffold then run this command   rails destroy scaffold MODEL NAME   Case 2  if you want to revert model then run this command   rails destroy model MODEL NAME   Case 3  if you want to revert controller then run this command   rails destroy controller CONTROLLER NAME   Note  you can also use shortcut d instead of destroy

User · Answer

If you use Rails  use rails d controller Users   And  if you use Zeus  use zeus d controller Users    On the other hand  if you are using git or SVN  revert your changes with the commit number  This is much faster

User · Answer

You can undo a rails generate in the following ways    For the model  rails destroy MODEL  For the controller  rails destroy controller name

User · Answer

We use generate as                            rails generate app   So regenerating any generate statement can be reversed using destroy statement  Just replace generate with destroy  i e       rails generate app can be written as   rails destroy app  rails generate     asrails destroy

User · Answer

If you prefer to delete the controller manually   For controller welcome  rm app controllers welcome controller rb rm app views welcome rm test controllers welcome controller test rb rm app helpers welcome helper rb rm test helpers welcome helper test rb rm app assets javascripts welcome js coffee rm app assets stylesheets welcome css scss

User · Answer

You could use rails d model controller migration     to destroy or remove the changes generated by using the rails generate command   For example   rails g model Home name string   creates a model named home with attribute name  To remove the files and code generated from that command we can use   rails d model Home

[ruby] How to reverse a 'rails generate'

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