Class: HTTP

Inherits:

Object

• Object
• HTTP

show all

Defined in:

opal/opal-jquery/http.rb

Instance Attribute Summary (collapse)

• - (Object) body readonly

  Returns the value of attribute body.

• - (Object) error_message readonly

  Returns the value of attribute error_message.

• - (Object) method readonly

  Returns the value of attribute method.

• - (Object) status_code readonly

  Returns the value of attribute status_code.

• - (Object) url readonly

  Returns the value of attribute url.

• - (Object) xhr readonly

  Returns the value of attribute xhr.

Class Method Summary (collapse)

• + (Object) build_request(url, method, options, block)
• + (Object) delete(url, opts = {}, &block)
• + (Object) get(url, opts = {}, &block)
• + (Object) head(url, opts = {}, &block)
• + (Object) patch(url, opts = {}, &block)
• + (Object) post(url, opts = {}, &block)
• + (Object) put(url, opts = {}, &block)
• + (Object) setup
• + (Object) setup=(settings)

Instance Method Summary (collapse)

• - (Object) fail
• - (String) get_header(key)

  Returns the value of the specified response header.

• - (HTTP) initialize(url, method, options, handler = nil) constructor

  A new instance of HTTP.

• - (Object) json

  Parses the http response body through json.

• - (Boolean) ok?

  Returns true if the request succeeded, false otherwise.

• - (HTTP) send!

  Actually send this request.

• - (Object) succeed

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# File 'opal/opal-jquery/http.rb', line 60

def initialize(url, method, options, handler=nil)
  @url     = url
  @method  = method
  @ok      = true
  @xhr     = nil
  http     = self
  payload  = options.delete :payload
  settings = options.to_n

  if handler
    @callback = @errback = handler
  end

  %x{
    if (typeof(payload) === 'string') {
      settings.data = payload;
    }
    else if (payload != nil) {
      settings.data = payload.$to_json();
      settings.contentType = 'application/json';
    }

    settings.url  = url;
    settings.type = method;

    settings.success = function(data, status, xhr) {
      http.body = data;
      http.xhr = xhr;
      http.status_code = xhr.status;

      if (typeof(data) === 'object') {
        http.json = #{ JSON.from_object `data` };
      }

      return #{ http.succeed };
    };

    settings.error = function(xhr, status, error) {
      http.body = xhr.responseText;
      http.xhr = xhr;
      http.status_code = xhr.status;

      return #{ http.fail };
    };
  }

  @settings = settings
end

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# File 'opal/opal-jquery/http.rb', line 18

def body
  @body
end

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# File 'opal/opal-jquery/http.rb', line 18

def error_message
  @error_message
end

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# File 'opal/opal-jquery/http.rb', line 18

def method
  @method
end

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# File 'opal/opal-jquery/http.rb', line 18

def status_code
  @status_code
end

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# File 'opal/opal-jquery/http.rb', line 18

def url
  @url
end

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# File 'opal/opal-jquery/http.rb', line 18

def xhr
  @xhr
end

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# File 'opal/opal-jquery/http.rb', line 44

def self.build_request(url, method, options, block)
  unless block
    promise = ::Promise.new
    block = proc do |response|
      if response.ok?
        promise.resolve response
      else
        promise.reject response
      end
    end
  end

  http = new(url, method, options, block).send!
  promise || http
end

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# File 'opal/opal-jquery/http.rb', line 32

def self.delete(url, opts={}, &block)
  build_request url, :DELETE, opts, block
end

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# File 'opal/opal-jquery/http.rb', line 20

def self.get(url, opts={}, &block)
  build_request url, :GET, opts, block
end

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# File 'opal/opal-jquery/http.rb', line 40

def self.head(url, opts={}, &block)
  build_request url, :HEAD, opts, block
end

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# File 'opal/opal-jquery/http.rb', line 36

def self.patch(url, opts={}, &block)
  build_request url, :PATCH, opts, block
end

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# File 'opal/opal-jquery/http.rb', line 24

def self.post(url, opts={}, &block)
  build_request url, :POST, opts, block
end

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# File 'opal/opal-jquery/http.rb', line 28

def self.put(url, opts={}, &block)
  build_request url, :PUT, opts, block
end

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# File 'opal/opal-jquery/http.rb', line 9

def self.setup
  Hash.new(`$.ajaxSetup()`)
end

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# File 'opal/opal-jquery/http.rb', line 13

def self.setup= settings
  `$.ajaxSetup(#{settings.to_n})`
end

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# File 'opal/opal-jquery/http.rb', line 109

def fail
  @ok = false
  @errback.call self if @errback
end

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# File 'opal/opal-jquery/http.rb', line 161

def get_header(key)
  `#{xhr}.getResponseHeader(#{key});`
end

# Getting JSON content
HTTP.get("api.json") do |response|
  puts response.json
end

# => {"key" => 1, "bar" => 2, ... }

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# File 'opal/opal-jquery/http.rb', line 126

def json
  @json || JSON.parse(@body)
end

HTTP.get("/some/url") do |response|
  if response.ok?
    alert "Yay!"
  else
    alert "Aww :("
  end

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# File 'opal/opal-jquery/http.rb', line 141

def ok?
  @ok
end

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# File 'opal/opal-jquery/http.rb', line 148

def send!
  `$.ajax(#{ @settings })`
  self
end

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# File 'opal/opal-jquery/http.rb', line 153

def succeed
  @callback.call self if @callback
end