I am trying to use PostgreSql with a rails project on my local machine. But everytime I try to run rails db:migrate -- I get the following error.
I am pretty sure this has nothing to do with rails but something to do with PostgreSQL. Any idea on how to fix it?
Related
I'm trying to learn rails but I'm having this problem to set up the connection between postgresql and rails. I have follow several tutorials but none of those have worked for me, as far as i know this issues has to do with the configuration i need to add on my database.yml.
If you're sure the username and password are accurate. You can just have them in the default block to avoid duplicating them in the development and test block and try again.
rake db:create
rake db:migrate
rails s
On rake db:migrate, I am getting following error.
ruby-2.2.1/gems/activesupport-4.0.2/lib/active_support/values/time_zone.rb:282: warning: circular argument reference - now
rake aborted!
PG::ConnectionBad: could not connect to server: No such file or directory
Is the server running locally and accepting
My rails gem gem 'rails', '4.0.2'
What's the solution for this?
From your error, it sounds like you are trying to use a Postgres database with your rails project. Basically, postgres runs separately from your rails project. You need to make sure you have:
a) installed postgres using something like homebrew
b) found a convenient way to start your postgres server when you need to (I recommend the one on postgresapp.com)
c) actually started the server before running the command that's producing this error (e.g., through opening the postgresapp or in a separate terminal window)
Conceptually, think of it this way: you can't migrate (e.g. 'change') a database that's inaccessible because the postgres server is down. That's what the error means.
As an alternative, you can use SQLite instead of Postgres. SQLite does NOT run as a separate process (https://www.sqlite.org/serverless.html), so you will run into these problems less. However, in your ruby code, you will need to pay attention to exactly how to configure your app for a postgres database or a sqlite database, whichever you choose. Here is a great SQLite tutorial for initial set-up:
http://www.integralist.co.uk/posts/active-record.html
Hello I am just getting started putting up a test database. I am using the preloaded rails environment from digital-ocean if that helps anything.
So I have just cloned my application from github and went rake db:create. When I did that it says there is an undefined method each for SQLite. I am not using sqlite though? I have specified PostgreSQL as the adapter.
I am a noob so sorry If this is a dumb question. Thank you in advance.
Use:
rake db:create
Not
rake:db create
I removed SQLite using gem uninstall sqlite3 then restarted the server. Everything started to work after that.
I'm trying to create a new record through the rails console but I'm getting the following error:
PG::ConnectionBad: FATAL: database "my_database_development" does not exist
I've recently changed from Sqlite3 to PG to be able to deploy to Heroku. Is this what is giving the error?
Thanks a lot!
It looks like you have not yet run
rake db:create
This will "create" the databases on your PostgreSQL server. A step that you didn't have to do with SQLite, but Postgres requires it. As TK-421 said, make sure that your database.yml is configured for your OS and Postgres, not SQLite.
Here is a (possibly outdated) Railscast on the topic.
http://railscasts.com/episodes/342-migrating-to-postgresql
Is this running locally, or on Heroku? In config/database.yml, the local user you specify will need to have CREATEDB privileges (as a superuser, for example).
There's a little more configuration required in this case than for SQLite. Google will show you a bunch of tutorials specific to your OS.
If you see this problem in production on heroku, start the console like this:
rails console production
If you have that problem in development on your machine, check your config/database.yml. It is points to a local development database that does not exist.
I'm using Ubuntu, with Rails 3.0.1 with mysql2 socket.
When i do runing install, rake db:create and after rails server, my Welcome aboard, shows ActiveRecord::ConnectionNotEstablished in About your application’s environment
What i do?
Had the same problem on rails 3.1.1:
rake db:create - ok
rails console and some DMLs - ok
but accessing info from the web-page resulted in ActiveRecord::ConnectionNotEstablished.
A rails server restart helped.
It sounds like your MySQL server isn't running. You'll need to install MySQL if you haven't already (apt-get install mysql-server should do it). Once it's running, you'll need to set up a user and database for your app, and note the username and password so that you can put that information in config/database.yml within your app.
This link will be useful if you need any help with those steps.
You'll need to do some more debugging to work it out.
How are you running your server?
Make yourself a model.
rails generate model Something name:string
Then try running rake db:migrate
Does this work?
If it does, then you must be running your server in a different way (maybe you're running it in production mode?)
Try rails console and try to do Something.count
If all of those work
then I'd suggest you try restarting your server.
rails server