How do I run a server on ruby on rails? - ruby-on-rails

Question

I want to link to localserver:3000 on ruby on rails but when I use bundle exec rails server, it just exits and doesn't generate the server.
➜ demo git:(master) ✗ bundle exec rails server
=> Booting Puma
=> Rails 5.2.0 application starting in development
=> Run `rails server -h` for more startup options
Exiting
This is my route.rb if it helps!
Rails.application.routes.draw do
root "pages#home"
end
I created a controller called pages and created a view called home. When I first generated the server, I already ended the session so I'm wondering how I can generate the server again so I can see my "home" page.
This is what happens when I try to get the server. Can anyone explain to me what could be wrong? Thank you!
Edit:
I created my controller by using
bundle exec rails g controller pages
Then I added home.html.erb under views.
I managed to connect to the server but this is the error I see on my page:
I ran the command but nothing happened. I copied and pasted
bin/rails db:migrate RAILS_ENV=development
and this was what I got:

Answer 1

I recommend you to check the status of all your migrations, maybe there is another migration pending. Use this command rake db:migrate:status to see all migrations status.
You can also reset your db and do the migrations all over again.
rake db:reset (which runs db:drop then db:setup) then run your migrations rake db:migrate.
Also, please check if any of your migrations are referencing on any other migration that is still not created!
P.S. Please add the complete error you are getting, so I can have a better idea what the problem is!

Answer 2

At this point, I think either of this should be the problem.
You cloned the files that was built on Mac to run on windows or Vice versa.
There are some queries you cannot pass to the database. Pending the type of database, you are using with your Rails application.
Crosscheck if your database settings are correct.
That's it, Try this.
1. For rails, 5+ do rails db:rollback
Bundle install (just to see if everything works well)
Run bin/rails db:migrate RAILS_ENV=development. if it still doesn't work, Look through the error report on your terminal, you should be able to see the things that are resisting the "migrate" command.
start your server with rails s --port=PORT_NUMBER. (e.g rails --port=4000)

Answer 3

You have a problem with the db/migrations/20180619074210_create_users.rb file. Delete it as the migration already failed. You do not need to undo it (rollback).
Also, I would highly recommend using command line to create a migration file until you are familiar with them. And if you have time, checkout Rails guides for Active Record Migrations.
Example:
1) Create a user table with name column (string) and age column (integer):
rails generate migration CreateUsers name:string age:integer
2) This will create a similar file with a different timestamp. In my machine I got db/migrate/20180626151529_create_users.rb.
3) If you open that file, you can examine the changes:
class CreateUsers < ActiveRecord::Migration
def change
create_table :users do |t|
t.string :name
t.integer :age
end
end
end
4) If all looks good, you need to run this migration file. That can be achieved by:
rake db:migrate