Postgres is a powerful and free object-relational database management system. It has gained a lot of momentum since its introduction in 1995 because of its robustness and powerful features it ships with out of the box. In this article, we’ll walk through the process of installing a Postgres database on a Mac OS X machine and set it up for Ruby on Rails development.
Install Postgres Database with Homebrew
Homebrew is a popular package manager for OS X. To install Postgres with Homebrew, follow the steps below:
The first thing to do is install Homebrew if you haven’t done so already. Homebrew site has a simple command that you have to paste in your terminal to do so. Make sure to accept the command line developer tools installation if prompted.
brew install postgres to install Postgres. It might take a little while to compile and install. After compilation is done, it’ll give you some instructions to finish setting it up.
The database will be initialized during installation, so there isn’t a need to run
initdb to finish installation of Postgres via Homebrew. Near the end of the installation instructions you should see mention of the command
If you don’t already have
brew services installed. It may be installed with
And then you can run the following command to start Postgres as a background service:
Postgres will also restart automatically at login after you have run the command above.
Once Postgres has started, we can use
brew services to stop it manually:
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Or we can also use
brew services to restart Postgres:
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Now you should have PostgreSQL all set up.
Set Up Postgres to Work with a Rails App
First, install the
Make sure you include the
pg gem in your Gemfile, and run
Now, set up your
config/database.yml file to point to your Posgres database.
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Let’s create the development and test databases:
Now you can run pending migrations, if there are any.