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https://github.com/richhollis/swagger-docs
Generates swagger-ui json files for Rails APIs with a simple DSL.
https://github.com/richhollis/swagger-docs
Last synced: 13 days ago
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Generates swagger-ui json files for Rails APIs with a simple DSL.
- Host: GitHub
- URL: https://github.com/richhollis/swagger-docs
- Owner: richhollis
- License: mit
- Created: 2013-10-22T12:56:36.000Z (about 11 years ago)
- Default Branch: master
- Last Pushed: 2017-11-03T08:52:04.000Z (about 7 years ago)
- Last Synced: 2024-10-01T13:51:24.058Z (about 1 month ago)
- Language: Ruby
- Size: 248 KB
- Stars: 749
- Watchers: 13
- Forks: 150
- Open Issues: 36
-
Metadata Files:
- Readme: README.md
- Changelog: CHANGELOG.md
- License: LICENSE.txt
Awesome Lists containing this project
- awesome-ruby-api - swagger-docs - Define and serve live-updating Swagger JSON for Ruby apps. (Documentation)
README
# Swagger::Docs
Generates swagger-ui json files for rails apps with APIs. You add the swagger DSL to your controller classes and then run one rake task to generate the json files.
[][gem]
[][gemnasium]
[gem]: https://rubygems.org/gems/swagger-docs
[travis]: http://travis-ci.org/richhollis/swagger-docs
[gemnasium]: https://gemnasium.com/richhollis/swagger-docs
[coveralls]: https://coveralls.io/r/richhollis/swagger-docs
## Swagger Version Specification Support
This project supports elements of the v1.2 swagger specification. It *does not* support the v2 specification. If you are looking for support for the newer specification the please see the [swagger-blocks](https://github.com/fotinakis/swagger-blocks/) project. I don't currently have any plans to add support for v2.0 at this time due to time constraints, but I'm open to accepting a PR on this. Contact me if you are interested in helping with that effort - thanks!
## Example usage
Here is an extract of the DSL from a user controller API class:
```ruby
swagger_controller :users, "User Management"
swagger_api :index do
summary "Fetches all User items"
notes "This lists all the active users"
param :query, :page, :integer, :optional, "Page number"
response :unauthorized
response :not_acceptable
response :requested_range_not_satisfiable
end
```
## Installation
Add this line to your application's Gemfile:
gem 'swagger-docs'
And then execute:
$ bundle
Or install it yourself as:
$ gem install swagger-docs
## Usage
### Create Initializer
Create an initializer in config/initializers (e.g. swagger_docs.rb) and define your APIs:
```ruby
Swagger::Docs::Config.register_apis({
"1.0" => {
# the extension used for the API
:api_extension_type => :json,
# the output location where your .json files are written to
:api_file_path => "public/api/v1/",
# the URL base path to your API
:base_path => "http://api.somedomain.com",
# if you want to delete all .json files at each generation
:clean_directory => false,
# Ability to setup base controller for each api version. Api::V1::SomeController for example.
:parent_controller => Api::V1::SomeController,
# add custom attributes to api-docs
:attributes => {
:info => {
"title" => "Swagger Sample App",
"description" => "This is a sample description.",
"termsOfServiceUrl" => "http://helloreverb.com/terms/",
"contact" => "[email protected]",
"license" => "Apache 2.0",
"licenseUrl" => "http://www.apache.org/licenses/LICENSE-2.0.html"
}
}
}
})
```
#### Configuration options
The following table shows all the current configuration options and their defaults. The default will be used if you don't supply your own value.
Option
Description
Default
api_extension_type
The extension, if necessary, used for your API - e.g. :json or :xml
nil
api_file_path
The output file path where generated swagger-docs files are written to.
public/
base_path
The URI base path for your API - e.g. api.somedomain.com
/
base_api_controller / base_api_controllers
The base controller class your project uses; it or its subclasses will be where you call swagger_controller and swagger_api. An array of base controller classes may be provided.
ActionController::Base
clean_directory
When generating swagger-docs files this option specifies if the api_file_path should be cleaned first. This means that all files will be deleted in the output directory first before any files are generated.
false
formatting
Specifies which formatting method to apply to the JSON that is written. Available options: :none, :pretty
:pretty
camelize_model_properties
Camelizes property names of models. For example, a property name called first_name would be converted to firstName.
true
parent_controller
Assign a different controller to use for the configuration
### Documenting a controller
```ruby
class Api::V1::UsersController < ApplicationController
swagger_controller :users, "User Management"
swagger_api :index do
summary "Fetches all User items"
notes "This lists all the active users"
param :query, :page, :integer, :optional, "Page number"
param :path, :nested_id, :integer, :optional, "Team Id"
response :unauthorized
response :not_acceptable, "The request you made is not acceptable"
response :requested_range_not_satisfiable
end
swagger_api :show do
summary "Fetches a single User item"
param :path, :id, :integer, :optional, "User Id"
response :ok, "Success", :User
response :unauthorized
response :not_acceptable
response :not_found
end
swagger_api :create do
summary "Creates a new User"
param :form, :first_name, :string, :required, "First name"
param :form, :last_name, :string, :required, "Last name"
param :form, :email, :string, :required, "Email address"
param_list :form, :role, :string, :required, "Role", [ "admin", "superadmin", "user" ]
response :unauthorized
response :not_acceptable
end
swagger_api :update do
summary "Updates an existing User"
param :path, :id, :integer, :required, "User Id"
param :form, :first_name, :string, :optional, "First name"
param :form, :last_name, :string, :optional, "Last name"
param :form, :email, :string, :optional, "Email address"
param :form, :tag, :Tag, :required, "Tag object"
response :unauthorized
response :not_found
response :not_acceptable
end
swagger_api :destroy do
summary "Deletes an existing User item"
param :path, :id, :integer, :optional, "User Id"
response :unauthorized
response :not_found
end
# Support for Swagger complex types:
# https://github.com/wordnik/swagger-core/wiki/Datatypes#wiki-complex-types
swagger_model :Tag do
description "A Tag object."
property :id, :integer, :required, "User Id"
property :name, :string, :optional, "Name"
property_list :type, :string, :optional, "Tag Type", ["info", "warning", "error"]
end
end
```
#### Support for Enums (PR #108)
```
property_list :type, :string, :optional, "Type", ["info", "warning", "error"]
```
#### Custom resource paths`(PR #126)
```ruby
class Api::V1::UsersController < ApplicationController
swagger_controller :users, "User Management", resource_path: "/some/where"
```
### DRYing up common documentation
Suppose you have a header or a parameter that must be present on several controllers and methods. Instead of duplicating it on all the controllers you can do this on your API base controller:
```ruby
class Api::BaseController < ActionController::Base
class << self
Swagger::Docs::Generator::set_real_methods
def inherited(subclass)
super
subclass.class_eval do
setup_basic_api_documentation
end
end
private
def setup_basic_api_documentation
[:index, :show, :create, :update, :delete].each do |api_action|
swagger_api api_action do
param :header, 'Authentication-Token', :string, :required, 'Authentication token'
end
end
end
end
end
```
And then use it as a superclass to all you API controllers. All the subclassed controllers will have the same documentation applied to them.
#### Alternate method
Using a block for the swagger_api definition:
```ruby
class Api::V1::UserController < Api::V1::BaseController
swagger_controller :user, "Users"
def self.add_common_params(api)
api.param :form, "user[first_name]", :string, :optional, "Notes"
api.param :form, "user[last_name]", :string, :optional, "Name"
api.param :form, "user[email]", :string, :optional, "Email"
end
swagger_api :create do |api|
summary "Create a new User item"
Api::V1::UserController::add_common_params(api)
response :unauthorized
response :not_acceptable
response :unprocessable_entity
end
swagger_api :update do |api|
summary "Update an existing User item"
Api::V1::UserController::add_common_params(api)
response :unauthorized
response :not_acceptable
response :unprocessable_entity
end
end
```
### DSL Methods
Method
Description
summary
The summary of the API
notes (optional)
The associated notes for the API
param
Standard API Parameter
param_list
Standard API Enum/List parameter.
response
Takes a symbol or status code and passes it to `Rack::Utils.status_code`. The current list of status codes can be seen here: https://github.com/rack/rack/blob/master/lib/rack/utils.rb. An optional message can be added.
### Run rake task to generate docs
```
rake swagger:docs
```
Swagger-ui JSON files should now be present in your api_file_path (e.g. ./public/api/v1)
#### Additional logging for generation failures
Errors aren't displayed by default. To see all error messages use the ```SD_LOG_LEVEL``` environment variable when running the rake task:
```
SD_LOG_LEVEL=1 rake swagger:docs
```
Currently only constantize errors are shown.
Errors are written to ```$stderr```. Error logging methods can be found in ```Config``` and can be overridden for custom behaviour.
Thanks to **[@tomtt](https://github.com/tomtt/)** who originally suggested this idea in #81
### Sample
A sample Rails application where you can run the above rake command and view the output in swagger-ui can be found here:
https://github.com/richhollis/swagger-docs-sample
### Advanced Customization
#### Inheriting from a custom Api controller
By default swagger-docs is applied to controllers inheriting from ApplicationController.
If this is not the case for your application, use this snippet in your initializer
_before_ calling Swagger::Docs::Config#register_apis(...).
```ruby
class Swagger::Docs::Config
def self.base_api_controller; Api::ApiController end
end
```
#### Custom route discovery for supporting Rails Engines
By default, swagger-docs finds controllers by traversing routes in `Rails.application`.
To override this, you can customize the `base_application` config in an initializer:
```ruby
class Swagger::Docs::Config
def self.base_application; Api::Engine end
end
```
If you want swagger to find controllers in `Rails.application` and/or multiple
engines you can override `base_application` to return an array.
```ruby
class Swagger::Docs::Config
def self.base_application; [Rails.application, Api::Engine, SomeOther::Engine] end
end
```
Or, if you prefer you can override `base_applications` for this purpose. The plural
`base_applications` takes precedence over `base_application` and MUST return an
array.
```ruby
class Swagger::Docs::Config
def self.base_applications; [Rails.application, Api::Engine, SomeOther::Engine] end
end
```
#### Transforming the `path` variable
Swagger allows a distinction between the API documentation server and the hosted API
server through the `path` variable (see [Swagger: No server Integrations](https://github.com/wordnik/swagger-core/wiki/No-server-Integrations)). To override the default swagger-docs behavior, you can provide a `transform_path`
class method in your initializer:
```ruby
class Swagger::Docs::Config
def self.transform_path(path, api_version)
"http://example.com/api-docs/#{api_version}/#{path}"
end
end
```
The transformation will be applied to all API `path` values in the generated `api-docs.json` file.
#### Precompile
It is best-practice *not* to keep documentation in version control. An easy way
to integrate swagger-docs into a conventional deployment setup (e.g. capistrano,
chef, or opsworks) is to piggyback on the 'assets:precompile' rake task. And don't forget
to add your api documentation directory to .gitignore in this case.
```ruby
#Rakefile or lib/task/precompile_overrides.rake
namespace :assets do
task :precompile do
Rake::Task['assets:precompile'].invoke
Rake::Task['swagger:docs'].invoke
end
end
```
### Output files
api-docs.json output:
```json
{
"apiVersion": "1.0",
"swaggerVersion": "1.2",
"basePath": "/api/v1",
"apis": [
{
"path": "/users.{format}",
"description": "User Management"
}
]
}
```
users.json output:
```json
{
"apiVersion": "1.0",
"swaggerVersion": "1.2",
"basePath": "http://api.somedomain.com/api/v1/",
"resourcePath": "/users",
"apis": [
{
"path": "/users",
"operations": [
{
"summary": "Fetches all User items",
"parameters": [
{
"paramType": "query",
"name": "page",
"type": "integer",
"description": "Page number",
"required": false
}
],
"responseMessages": [
{
"code": 401,
"message": "Unauthorized"
},
{
"code": 406,
"message": "The request you made is not acceptable"
},
{
"code": 416,
"message": "Requested Range Not Satisfiable"
}
],
"method": "get",
"nickname": "Api::V1::Users#index"
}
]
},
{
"path": "nested/{nested_id}/sample",
"operations": [
{
"summary": "Fetches all User items",
"parameters": [
{
"paramType": "query",
"name": "page",
"type": "integer",
"description": "Page number",
"required": false
},
{
"paramType": "path",
"name": "nested_id",
"type": "integer",
"description": "Team Id",
"required": false
}
],
"responseMessages": [
{
"code": 401,
"message": "Unauthorized"
},
{
"code": 406,
"message": "The request you made is not acceptable"
},
{
"code": 416,
"message": "Requested Range Not Satisfiable"
}
],
"method": "get",
"nickname": "Api::V1::Users#index"
}
]
},
{
"path": "/users",
"operations": [
{
"summary": "Creates a new User",
"parameters": [
{
"paramType": "form",
"name": "first_name",
"type": "string",
"description": "First name",
"required": true
},
{
"paramType": "form",
"name": "last_name",
"type": "string",
"description": "Last name",
"required": true
},
{
"paramType": "form",
"name": "email",
"type": "string",
"description": "Email address",
"required": true
}
],
"responseMessages": [
{
"code": 401,
"message": "Unauthorized"
},
{
"code": 406,
"message": "Not Acceptable"
}
],
"method": "post",
"nickname": "Api::V1::Users#create"
}
]
},
{
"path": "/users/{id}",
"operations": [
{
"summary": "Fetches a single User item",
"parameters": [
{
"paramType": "path",
"name": "id",
"type": "integer",
"description": "User Id",
"required": false
}
],
"responseMessages": [
{
"code": 401,
"message": "Unauthorized"
},
{
"code": 404,
"message": "Not Found"
},
{
"code": 406,
"message": "Not Acceptable"
}
],
"method": "get",
"nickname": "Api::V1::Users#show"
}
]
},
{
"path": "/users/{id}",
"operations": [
{
"summary": "Updates an existing User",
"parameters": [
{
"paramType": "path",
"name": "id",
"type": "integer",
"description": "User Id",
"required": true
},
{
"paramType": "form",
"name": "first_name",
"type": "string",
"description": "First name",
"required": false
},
{
"paramType": "form",
"name": "last_name",
"type": "string",
"description": "Last name",
"required": false
},
{
"paramType": "form",
"name": "email",
"type": "string",
"description": "Email address",
"required": false
},
{
"paramType": "form",
"name": "tag",
"type": "Tag",
"description": "Tag object",
"required": true
}
],
"responseMessages": [
{
"code": 401,
"message": "Unauthorized"
},
{
"code": 404,
"message": "Not Found"
},
{
"code": 406,
"message": "Not Acceptable"
}
],
"method": "put",
"nickname": "Api::V1::Users#update"
}
]
},
{
"path": "/users/{id}",
"operations": [
{
"summary": "Deletes an existing User item",
"parameters": [
{
"paramType": "path",
"name": "id",
"type": "integer",
"description": "User Id",
"required": false
}
],
"responseMessages": [
{
"code": 401,
"message": "Unauthorized"
},
{
"code": 404,
"message": "Not Found"
}
],
"method": "delete",
"nickname": "Api::V1::Users#destroy"
}
]
}
],
"models": {
"Tag": {
"id": "Tag",
"required": [
"id"
],
"properties": {
"id": {
"type": "integer",
"description": "User Id"
},
"name": {
"type": "string",
"description": "Name",
"foo": "test"
}
},
"description": "A Tag object."
}
}
}
```
## Thanks to our contributors
Thanks to jdar, fotinakis, stevschmid, ldnunes, aaronrenner and all of our contributors for making swagger-docs even better.
## Related Projects
**[@fotinakis](https://github.com/fotinakis/)** has created Swagger::Blocks - a DSL for pure Ruby code blocks: [swagger-blocks](https://github.com/fotinakis/swagger-blocks/)
A [cors rack middleware for testing swagger apis](https://gist.github.com/richhollis/b98a8b0599860145ad86) designed to be used in Rails development environments.
## More About Me
[Rich Hollis](http://richhollis.co.uk)
## Contributing
When raising a Pull Request please ensure that you have provided good test coverage for the request you are making.
1. Fork it
2. Create your feature branch (`git checkout -b my-new-feature`)
3. Commit your changes (`git commit -am 'Add some feature'`)
4. Push to the branch (`git push origin my-new-feature`)
5. Create new Pull Request