Module: ExploreCourses

Defined in:
lib/explorecourses/base.rb,
lib/explorecourses/course.rb,
lib/explorecourses/section.rb,
lib/explorecourses/schedule.rb,
lib/explorecourses/instructor.rb

Defined Under Namespace

Classes: Course, Instructor, Schedule, Section

Constant Summary collapse

URL_BASE_SEARCH = 
"http://explorecourses.stanford.edu/search?"
XML_VERSION = 
"xml-20140630"

Class Method Summary collapse

Class Method Details

.check_xml_version ⇒ Object 



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# File 'lib/explorecourses/base.rb', line 9

def self.check_xml_version
    request = Typhoeus::Request.new(URL_BASE_SEARCH, params: { view: XML_VERSION })
    request.run
    response = request.response
    if response
        doc = Nokogiri::XML(response.body)
        return { deprecated: doc.at_xpath("//deprecated").content,
                latest_version: doc.at_xpath("//latestVersion").content}
    end
end

.query_courses(query) ⇒ Object 



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# File 'lib/explorecourses/base.rb', line 20

def self.query_courses(query)
    params = {
        view: XML_VERSION,
        q: query
    }
    request = Typhoeus::Request.new(URL_BASE_SEARCH, params: params)
    request.run
    response = request.response
    if response
        doc = Nokogiri::XML(response.body)
        # use XPath to navigate the XML body
        courses_xml = doc.xpath(".//course")
        courses = []
        courses_xml.each do |course_xml|
            year = course_xml.at_xpath(".//year").content
            subject = course_xml.at_xpath(".//subject").content
            code = course_xml.at_xpath(".//code").content
            title = course_xml.at_xpath(".//title").content
            description = course_xml.at_xpath(".//description").content
            gers = course_xml.at_xpath(".//gers").content
            repeatable = course_xml.at_xpath(".//repeatable").content
            grading = course_xml.at_xpath(".//grading").content
            units_min = course_xml.at_xpath(".//unitsMin").content
            units_max = course_xml.at_xpath(".//unitsMax").content
            sections = retrieve_sections(course_xml.xpath(".//section"))
            courses << Course.new(year, subject, code, title, description, gers, repeatable,
                    grading, units_min, units_max, sections)
        end
        return courses
    end
end