mechanize.cr

This project is inspired by Ruby's mechanize. The purpose is to cover all the features of original one. Now, mechanize.cr can automatically store and send cookies, fill and submit forms.

Installation

1. Add the dependency to your shard.yml:

   dependencies:
     mechanize:
       github: Kanezoh/mechanize.cr
   

2. Run shards install

Usage

simple GET request

require "mechanize"

agent = Mechanize.new
page = agent.get("http://example.com/")

puts page.code # => 200
puts page.body # => html
puts page.title # => Example Domain

POST request

You can also send post request with data.

require "mechanize"

agent = Mechanize.new
query = {"foo" => "foo_value", "bar" => "bar_value"}
page = agent.post("http://example.com/", query: query)
# => request body is foo=foo_value&bar=bar_value

add query params, request_headers

You can add any query parameters and headers to requests.

require "mechanize"

agent = Mechanize.new
agent.request_headers = HTTP::Headers{"Foo" => "Bar"}
params = {"hoge" => "hoge"}
page = agent.get("http://example.com/", params: params)
# The actual URL is http://example.com/?hoge=hoge

fill and submit form

You can fill and submit form by using field_with and submit. It enables you to scrape web pages requiring login.

require "mechanize"

agent = Mechanize.new
page = agent.get("#{web page contains login form}")
form = page.forms[0]
form.field_with("email").value = "tester@example.com"
form.field_with("password").value = "xxxxxx"
agent.submit(form)

agent.get("#{web page only logged-in users can see}"

search node

You can use css selector to search html nodes by using #css method. This method is from lexbor, so if you want to explore more, please refer the repository.

puts page.css("h1").first.inner_text

Logging

For activation, simply setup the log to :debug level

Log.setup("mechanize", :debug)

Contributing

1. Fork it (https://github.com/Kanezoh/mechanize.cr/fork)
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 a new Pull Request

Contributors

• Kanezoh - creator and maintainer
• mamantoha - contributor