Ruby / Roda - Web Framework / Plugins / :header_matchers

Introduction

The :header_matchers plugin adds hash matchers for matching on less-common HTTP headers.

plugin :header_matchers

It adds a :header matcher for matching on arbitrary headers, which matches if the header is present:

r.on(header: 'X-App-Token') do |header_value|
  # perform route action
end

It adds a :host matcher for matching by the host of the request:

r.on(host: 'foo.example.com') do
  
end
  
r.on(host: /\A\w+.example.com/) do
  
end

It adds a :user_agent matcher for matching on a user agent patterns, which yields the regexp captures to the block:

r.on(user_agent: /Chrome\/([.\d]+)/) do |chrome_version|
  
end

It adds an :accept matcher for matching based on the Accept header:

r.on(accept: 'text/csv') do
  
end

Note! that the accept matcher is very simple and cannot handle wildcards, priorities, or anything but a simple comma separated list of mime types.