Getting Started
Generating a New Project
You now have a working Buffalo installation. In this section, you will learn how to create a brand new web application, using the buffalo command.
Create a New Project
Buffalo aims to make building new web applications in Go as quick and simple as possible. What could be more simple than a new application generator?
Start by going to your preferred folder where you want to place your project, then:
$ buffalo new coke
That will generate a whole new Buffalo application called coke, all ready to go:
- the Buffalo framework layout and default configuration (pop/soda with PostgreSQL support),
- all necessary Go dependencies needed to run the current application,
- frontend dependencies and working setup with webpack
- and an initial Git repository.
$ buffalo new coke
DEBU[2022-05-25T11:06:33-05:00] Step: 435aea40
DEBU[2022-05-25T11:06:33-05:00] Chdir: /your/path/coke
DEBU[2022-05-25T11:06:33-05:00] Exec: go mod init coke
go: creating new go.mod: module coke
DEBU[2022-05-25T11:06:33-05:00] File: /your/path/coke/README.md
DEBU[2022-05-25T11:06:33-05:00] File: /your/path/coke/actions/actions_test.go
DEBU[2022-05-25T11:06:33-05:00] File: /your/path/coke/actions/app.go
DEBU[2022-05-25T11:06:33-05:00] File: /your/path/coke/actions/home.go
DEBU[2022-05-25T11:06:33-05:00] File: /your/path/coke/actions/home_test.go
DEBU[2022-05-25T11:06:33-05:00] File: /your/path/coke/actions/render.go
DEBU[2022-05-25T11:06:33-05:00] File: /your/path/coke/cmd/app/main.go
DEBU[2022-05-25T11:06:33-05:00] File: /your/path/coke/.codeclimate.yml
DEBU[2022-05-25T11:06:33-05:00] File: /your/path/coke/.env
DEBU[2022-05-25T11:06:33-05:00] File: /your/path/coke/fixtures/sample.toml
DEBU[2022-05-25T11:06:33-05:00] File: /your/path/coke/grifts/init.go
DEBU[2022-05-25T11:06:33-05:00] File: /your/path/coke/inflections.json
DEBU[2022-05-25T11:06:33-05:00] File: /your/path/coke/config/buffalo-app.toml
DEBU[2022-05-25T11:06:33-05:00] Step: 638bde0d
DEBU[2022-05-25T11:06:33-05:00] Chdir: /your/path/coke
DEBU[2022-05-25T11:06:33-05:00] File: /your/path/coke/Dockerfile
DEBU[2022-05-25T11:06:33-05:00] File: /your/path/coke/.dockerignore
DEBU[2022-05-25T11:06:33-05:00] Step: 7065092d
DEBU[2022-05-25T11:06:33-05:00] Chdir: /your/path/coke
DEBU[2022-05-25T11:06:33-05:00] File: /your/path/coke/grifts/db.go
DEBU[2022-05-25T11:06:33-05:00] File: /your/path/coke/models/models.go
DEBU[2022-05-25T11:06:33-05:00] File: /your/path/coke/models/models_test.go
DEBU[2022-05-25T11:06:33-05:00] Step: 916dfca0
DEBU[2022-05-25T11:06:33-05:00] Chdir: /your/path/coke
DEBU[2022-05-25T11:06:33-05:00] File: /your/path/coke/database.yml
DEBU[2022-05-25T11:06:33-05:00] Step: ff1c6d38
DEBU[2022-05-25T11:06:33-05:00] Chdir: /your/path/coke
DEBU[2022-05-25T11:06:33-05:00] File: /your/path/coke/.buffalo.dev.yml
DEBU[2022-05-25T11:06:33-05:00] Step: 103396c6
DEBU[2022-05-25T11:06:33-05:00] Chdir: /your/path/coke
DEBU[2022-05-25T11:06:33-05:00] Exec: go install github.com/gobuffalo/buffalo-pop/v3@latest
DEBU[2022-05-25T11:06:34-05:00] Step: ae1260b1
DEBU[2022-05-25T11:06:34-05:00] Chdir: /your/path/coke
DEBU[2022-05-25T11:06:34-05:00] File: /your/path/coke/config/buffalo-plugins.toml
DEBU[2022-05-25T11:06:34-05:00] Step: 4992ff46
DEBU[2022-05-25T11:06:34-05:00] Chdir: /your/path/coke
DEBU[2022-05-25T11:06:34-05:00] File: /your/path/coke/actions/app.go
DEBU[2022-05-25T11:06:34-05:00] File: /your/path/coke/actions/home.go
DEBU[2022-05-25T11:06:34-05:00] File: /your/path/coke/actions/home_test.go
DEBU[2022-05-25T11:06:34-05:00] File: /your/path/coke/actions/render.go
DEBU[2022-05-25T11:06:34-05:00] File: /your/path/coke/locales/all.en-us.yaml
DEBU[2022-05-25T11:06:34-05:00] File: /your/path/coke/locales/embed.go
DEBU[2022-05-25T11:06:34-05:00] File: /your/path/coke/public/embed.go
DEBU[2022-05-25T11:06:34-05:00] File: /your/path/coke/public/robots.txt
DEBU[2022-05-25T11:06:34-05:00] File: /your/path/coke/templates/_flash.plush.html
DEBU[2022-05-25T11:06:34-05:00] File: /your/path/coke/templates/application.plush.html
DEBU[2022-05-25T11:06:34-05:00] File: /your/path/coke/templates/embed.go
DEBU[2022-05-25T11:06:34-05:00] File: /your/path/coke/templates/home/index.plush.html
DEBU[2022-05-25T11:06:34-05:00] Step: 69d71878
DEBU[2022-05-25T11:06:34-05:00] Chdir: /your/path/coke
DEBU[2022-05-25T11:06:34-05:00] LookPath: yarn
DEBU[2022-05-25T11:06:34-05:00] File: /your/path/coke/assets/css/_buffalo.scss
DEBU[2022-05-25T11:06:34-05:00] File: /your/path/coke/assets/css/application.scss
DEBU[2022-05-25T11:06:34-05:00] File: /your/path/coke/assets/images/favicon.ico
DEBU[2022-05-25T11:06:34-05:00] File: /your/path/coke/assets/images/logo.svg
DEBU[2022-05-25T11:06:34-05:00] File: /your/path/coke/assets/js/application.js
DEBU[2022-05-25T11:06:34-05:00] File: /your/path/coke/.babelrc
DEBU[2022-05-25T11:06:34-05:00] File: /your/path/coke/package.json
DEBU[2022-05-25T11:06:34-05:00] File: /your/path/coke/postcss.config.js
DEBU[2022-05-25T11:06:34-05:00] File: /your/path/coke/public/assets/keep
DEBU[2022-05-25T11:06:34-05:00] File: /your/path/coke/webpack.config.js
DEBU[2022-05-25T11:06:34-05:00] LookPath: yarn
DEBU[2022-05-25T11:06:34-05:00] Exec: yarn --version
1.22.17
DEBU[2022-05-25T11:06:34-05:00] Exec: yarn set version berry
➤ YN0000: Retrieving https://repo.yarnpkg.com/3.2.1/packages/yarnpkg-cli/bin/yarn.js
➤ YN0000: Saving the new release in .yarn/releases/yarn-3.2.1.cjs
➤ YN0000: Done in 0s 637ms
DEBU[2022-05-25T11:06:37-05:00] Exec: yarn config set enableGlobalCache true
➤ YN0000: Successfully set enableGlobalCache to true
DEBU[2022-05-25T11:06:37-05:00] Exec: yarn config set logFilters --json [{"code":"YN0013","level":"discard"}]
➤ YN0000: Successfully set logFilters to [
{
code: 'YN0013',
text: undefined,
pattern: undefined,
level: 'discard'
}
]
DEBU[2022-05-25T11:06:37-05:00] Exec: yarn --version
3.2.1
DEBU[2022-05-25T11:06:38-05:00] Exec: yarn install
DEBU[2022-05-25T11:06:38-05:00] ➤ YN0000: ┌ Resolution step
DEBU[2022-05-25T11:06:39-05:00] ➤ YN0032: │ fsevents@npm:2.3.2: Implicit dependencies on node-gyp are discouraged
DEBU[2022-05-25T11:06:43-05:00] ➤ YN0000: └ Completed in 5s 401ms
DEBU[2022-05-25T11:06:43-05:00] ➤ YN0000: ┌ Fetch step
DEBU[2022-05-25T11:06:43-05:00] ➤ YN0000: └ Completed
DEBU[2022-05-25T11:06:43-05:00] ➤ YN0000: ┌ Link step
DEBU[2022-05-25T11:06:44-05:00] ➤ YN0000: │ ESM support for PnP uses the experimental loader API and is therefore experimental
DEBU[2022-05-25T11:06:44-05:00] ➤ YN0007: │ @fortawesome/fontawesome-free@npm:5.15.4 must be built because it never has been before or the last one failed
DEBU[2022-05-25T11:06:44-05:00] ➤ YN0000: └ Completed in 0s 906ms
DEBU[2022-05-25T11:06:44-05:00] ➤ YN0000: Done with warnings in 6s 462ms
DEBU[2022-05-25T11:06:44-05:00] Step: bb3c28ed
DEBU[2022-05-25T11:06:44-05:00] Chdir: /your/path/coke
DEBU[2022-05-25T11:06:44-05:00] Exec: go mod tidy
go: finding module for package github.com/gobuffalo/buffalo
go: finding module for package github.com/gobuffalo/mw-paramlogger
go: finding module for package github.com/gobuffalo/buffalo-pop/v3/pop/popmw
go: finding module for package github.com/gobuffalo/mw-i18n/v2
go: finding module for package github.com/gobuffalo/buffalo/render
go: finding module for package github.com/gobuffalo/mw-forcessl
go: finding module for package github.com/gobuffalo/envy
go: finding module for package github.com/gobuffalo/mw-csrf
go: finding module for package github.com/unrolled/secure
go: finding module for package github.com/markbates/grift/grift
go: finding module for package github.com/gobuffalo/pop/v6
go: finding module for package github.com/gobuffalo/suite/v4
go: found github.com/gobuffalo/buffalo in github.com/gobuffalo/buffalo v0.18.7
go: found github.com/gobuffalo/buffalo-pop/v3/pop/popmw in github.com/gobuffalo/buffalo-pop/v3 v3.0.3
go: found github.com/gobuffalo/buffalo/render in github.com/gobuffalo/buffalo v0.18.7
go: found github.com/gobuffalo/envy in github.com/gobuffalo/envy v1.10.1
go: found github.com/gobuffalo/mw-csrf in github.com/gobuffalo/mw-csrf v1.0.0
go: found github.com/gobuffalo/mw-forcessl in github.com/gobuffalo/mw-forcessl v0.0.0-20220514125302-be60179938a4
go: found github.com/gobuffalo/mw-i18n/v2 in github.com/gobuffalo/mw-i18n/v2 v2.0.1
go: found github.com/gobuffalo/mw-paramlogger in github.com/gobuffalo/mw-paramlogger v1.0.0
go: found github.com/unrolled/secure in github.com/unrolled/secure v1.10.0
go: found github.com/markbates/grift/grift in github.com/markbates/grift v1.5.0
go: found github.com/gobuffalo/pop/v6 in github.com/gobuffalo/pop/v6 v6.0.3
go: found github.com/gobuffalo/suite/v4 in github.com/gobuffalo/suite/v4 v4.0.2
DEBU[2022-05-25T11:06:45-05:00] Exec: go mod download
DEBU[2022-05-25T11:06:46-05:00] Step: 218a906c
DEBU[2022-05-25T11:06:46-05:00] Chdir: /your/path/coke
DEBU[2022-05-25T11:06:46-05:00] Step: a3cee09e
DEBU[2022-05-25T11:06:46-05:00] Chdir: /your/path/coke
DEBU[2022-05-25T11:06:46-05:00] File: /your/path/coke/.gitignore
DEBU[2022-05-25T11:06:46-05:00] Exec: git init
hint: Using 'master' as the name for the initial branch. This default branch name
hint: is subject to change. To configure the initial branch name to use in all
hint: of your new repositories, which will suppress this warning, call:
hint:
hint: git config --global init.defaultBranch <name>
hint:
hint: Names commonly chosen instead of 'master' are 'main', 'trunk' and
hint: 'development'. The just-created branch can be renamed via this command:
hint:
hint: git branch -m <name>
Initialized empty Git repository in /your/path/coke/.git/
DEBU[2022-05-25T11:06:46-05:00] Exec: git add .
DEBU[2022-05-25T11:06:46-05:00] Exec: git commit -q -m Initial Commit
INFO[2022-05-25T11:06:46-05:00] Congratulations! Your application, coke, has been successfully generated!
INFO[2022-05-25T11:06:46-05:00] You can find your new application at: /your/path/coke
INFO[2022-05-25T11:06:46-05:00] Please read the README.md file in your new application for next steps on running your application.
Create a Customized App
The default setup is great, but maybe it doesn’t fit you. Buffalo provides several options as flags for the new command.
You can get the available flags list using the help command:
$ buffalo help new
Creates a new Buffalo application
Usage:
buffalo new [name] [flags]
Flags:
--api skip all front-end code and configure for an API server
--ci-provider string specify the type of ci file you would like buffalo to generate [none, travis, gitlab-ci, circleci] (default "none")
--config string config file (default is $HOME/.buffalo.yaml)
--db-type string specify the type of database you want to use [cockroach, mariadb, mysql, postgres, sqlite3] (default "postgres")
-d, --dry-run dry run
-f, --force delete and remake if the app already exists
-h, --help help for new
--module string specify the root module (package) name. [defaults to 'automatic']
--skip-config skips using the config file
--skip-docker skips generating the Dockerfile
--skip-pop skips adding pop/soda to your app
--skip-webpack skips adding Webpack to your app
--skip-yarn use npm instead of yarn for frontend dependencies management
--vcs string specify the Version control system you would like to use [none, git, bzr] (default "git")
-v, --verbose verbosely print out the go get commands
You can choose to generate an API application, skipping the frontend stuff. Maybe you want to setup a CI to build your app on your favorite system? Or even use your own package to handle the database? Just use the flags!
Override Default Config
By default buffalo new command will look for a configuration file at $HOME/.buffalo.yml and if it exists will try to load it. You can override the flags found in that file by passing the right ones in the command line or use the --config flag to specify a different YAML file. If the --skip-config flag is used buffalo new command will not load any config file and will use only the flags passed by the command line.
An example of a .buffalo.yml config file can be:
skip-yarn: true
db-type: postgres
bootstrap: 4
with-dep: true
Running Your Application in Development
Before starting Buffalo for the first time, please head over to the Database docs and read a little bit about setting up your databases.
One of the downsides to Go development is the lack of code “reloading”. This means as you change your code you need to manually stop your application, rebuild it, then restart it. Buffalo finds this annoying, and wants to make life better for you.
$ buffalo dev
The dev command will watch your .go and .html files and the asset folder by default. It will rebuild and restart your binary for you automatically, so you don’t have to worry about such things.
Just run the buffalo dev command and go to localhost:3000/ to see all changes live!
Run the dev server on a custom port
Sometimes you will already have an app working on the 3000 port. You can configure the dev server port by providing the PORT environment variable:
$ PORT=3001 buffalo dev
You can also take a look at the Env Variables chapter for further information on Buffalo configuration.
Next Steps
- Directory Structure - Learn more about Buffalo structure.