“rails generate model” hangs

Question

I'm new to ROR.

How can I use the same App name after I delete my rails App?

Following are the actions I performed. Step #6 is my problem.

1 - Environment

 - OS : Ubuntu 12.04.4
 - ruby : 2.1.1p76
 - rails : 4.1.2
 - DB : SQLite

2 - Create rails App :

rails new myApp
=> OK

3 - Create model :

 rails generate model mytable name:string
=> OK.

4 - Delete rails App :

 rm -rf myApp
=> OK

5 - Re-Create rails App :

 rails new myApp
 => OK

6 - Re-Create model :

 rails generate model mytable name:string
=> Not OK! waiting for infinite time

Answer 1

Just a hunch, but by any chance, are you still running a server process somewhere on your machine? That could be holding a lock that is preventing the new table from getting built.

Answer 2

Follow below steps

1 - Create rails App :

 rails new myApp

2 - Create model :

 rails generate model mytable name:string

3 - Drop The database :

 rake db:drop

4 - Delete rails App :

 rm -rf myApp

5 - Re-Create rails App :

 rails new myApp

6 - Recreate Database

 rake db:create

7 - Re-Create model :

 rails generate model mytable name:string

Answer 3

I think your database still has the table corresponding to your model from the first time you created it. What database system are you using? Performing rm -rf does not generally affect the database since the data lives outside the Rails app directory. You may need to reset the database with

$ rake db:reset

This will delete the table that was left over from the first time you created the model.

Note: If you are using SQLite for your database, this may point to a different problem.

Answer 4

不要杀死弹簧，只需使用内置的spring stop