Class: Clinical::Trial

Inherits:
Object
  • Object
show all
Includes:
AbstractElement, HTTParty, HappyMapper
Defined in:
lib/clinical/trial.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Methods included from AbstractElement

included

Instance Attribute Details

#categories ⇒ Object (readonly)

Returns the value of attribute categories.



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# File 'lib/clinical/trial.rb', line 56

def categories
  @categories
end

#keywords ⇒ Object (readonly)

Returns the value of attribute keywords.



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# File 'lib/clinical/trial.rb', line 55

def keywords
  @keywords
end

#terms ⇒ Object (readonly)

Returns the value of attribute terms.



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# File 'lib/clinical/trial.rb', line 57

def terms
  @terms
end

Class Method Details

.extract_options! ⇒ Object 



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# File 'lib/clinical/trial.rb', line 194

def extract_options!
  last.is_a?(Hash) ? pop : { }
end

.find(*args) ⇒ Object 



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# File 'lib/clinical/trial.rb', line 140

def find(*args)
  options = args.extract_options!

  options[:page] ||= 1
  options[:per_page] ||= 20

  query = query_hash_for(*[args, options])
  response = get("/search", :query => query)
  trials = Collection.create_from_results(options[:page], 
    options[:per_page], 
    response.body)

  if options[:extended]
    fetch_more_details(trials)
  else
    trials
  end
end

.find_by_id(id) ⇒ Object 



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# File 'lib/clinical/trial.rb', line 127

def find_by_id(id)
  response = get("/ct2/show/#{id}")
  if response.code == 400
    nil
  else
    begin
      parse(response.body)
    rescue LibXML::XML::Error
      return nil
    end 
  end
end

.query_hash_for(*args) ⇒ Object 



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# File 'lib/clinical/trial.rb', line 159

def query_hash_for(*args)
  query = {}
  options = args.extract_options! || {}
  
  conditions = options[:conditions] || {}
  query["start"] = (options[:per_page] * options[:page]) - (options[:per_page] - 1)
  unless conditions[:recruiting].nil?
    query["recr"] = conditions[:recruiting] ? "open" : "closed" 
  end
  query["term"] = args.first if args.first.is_a?(String)
  query["count"] = options[:per_page]
  {
    :condition => "cond", 
    :sponsor => "spons",
    :intervention => "intr",
    :outcome => "outc",
    :sponsor => "spons"
  }.each do |key,value|
    query[value] = conditions[key] unless conditions[key].nil?
  end

  unless conditions[:updated_at].nil?
    unless conditions[:updated_at].is_a?(Array)
      conditions[:updated_at] = [conditions[:updated_at]] 
    end

    query["lup_s"] = conditions[:updated_at][0].strftime("%m/%d/%Y")
    if conditions[:updated_at].size == 2
      query["lup_e"] = conditions[:updated_at][1].strftime("%m/%d/%Y") 
    end
  end

  query
end

Instance Method Details

#conditions ⇒ Object 



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# File 'lib/clinical/trial.rb', line 87

def conditions
  if condition_items.nil? || condition_items.empty?
    condition_summary.nil? ? nil : condition_summary.split(";")
  else
    condition_items
  end
end

#get_metadata ⇒ Object

this metadata is not accessible in the feed so crawl the html page to get keywords, categories, and terms



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# File 'lib/clinical/trial.rb', line 101

def get_metadata
  response = self.class.get("/ct2/show/#{id}", :query => {:displayxml => false})
  html = Nokogiri::HTML(response.body)

  metadata = {}

  {
    :terms => 0, 
    :keywords => 1
  }.each do |key, value|
    metadata[key] = []
    html.search("div.indent3:nth-last-child(#{value}) td").each do |td|
      words = td.inner_html.split(/\<br\/?\>/).collect{|i| i.gsub(/\<div.*/, "").strip.chomp}
      if !words.empty?
        metadata[key] += words
      end
      metadata[key]
    end

  end
 
  @terms, @categories, @keywords = metadata[:terms], metadata[:categories], metadata[:keywords]
  metadata
end

#id ⇒ Object 



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# File 'lib/clinical/trial.rb', line 59

def id
  self.nct_id
end

#maximum_age ⇒ Object 



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# File 'lib/clinical/trial.rb', line 75

def maximum_age
  parsed_maximum_age == "N/A" ? nil : parsed_maximum_age
end

#minimum_age ⇒ Object 



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# File 'lib/clinical/trial.rb', line 71

def minimum_age
  parsed_minimum_age == "N/A" ? nil : parsed_minimum_age
end

#open? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/clinical/trial.rb', line 63

def open?
  self.status && self.status.open?
end

#outcomes ⇒ Object 



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# File 'lib/clinical/trial.rb', line 79

def outcomes
  @outcomes ||= [primary_outcomes, secondary_outcomes].flatten
end

#phase ⇒ Object 



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# File 'lib/clinical/trial.rb', line 95

def phase
  self.text_phase.gsub(/phase /i, "").to_i
end

#sponsors ⇒ Object 



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# File 'lib/clinical/trial.rb', line 67

def sponsors
  @sponsors ||= [lead_sponsor, (collaborators || []), (agencies || [])].flatten
end

#status ⇒ Object 



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# File 'lib/clinical/trial.rb', line 83

def status
  self.read_status || self.overall_status
end