Class: CryptoCompare::Scraper

Inherits:
Object
  • Object
show all
Defined in:
lib/crypto_compare/scraper.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Scraper

Returns a new instance of Scraper.



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# File 'lib/crypto_compare/scraper.rb', line 6

def initialize
	@page = Nokogiri::HTML(open("https://coinmarketcap.com/"))
end

Instance Attribute Details

#page ⇒ Object

Returns the value of attribute page.



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# File 'lib/crypto_compare/scraper.rb', line 4

def page
  @page
end

Instance Method Details

#get_attributes(crypto_currency, source) ⇒ Object 



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# File 'lib/crypto_compare/scraper.rb', line 14

def get_attributes(crypto_currency, source)
	data = {}
	data["name"] = crypto_currency 
	data["price"] = source.css("tr#id-#{crypto_currency} td.no-wrap a.price").text
	data["market_cap"] = source.css("tr#id-#{crypto_currency} td.market-cap").text.gsub(/\s+/, "")
	data["circulating_supply"] = source.css("tr#id-#{crypto_currency} td.no-wrap a[target='_blank']").text.gsub(/\s+/, " ")
	data["percent_change"] = source.css("tr#id-#{crypto_currency} td.percent-24h").text
	data
end

#get_list(source) ⇒ Object 



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# File 'lib/crypto_compare/scraper.rb', line 10

def get_list(source)
	source.css("td.currency-name a" ).enum_for(:each_with_index).collect {|crypto, index| crypto.text.downcase.gsub(" ","-") if index <= 9 }.compact
end