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#Ruby Code Challenge 1:

$ rspec --format documentation

Create a Ruby on Rails API endpoint that accepts the following User information and abides by the following Acceptance Criteria:

##Request parameters:

{
first_name: String,
last_name: String,
phone_number: String,
college_id: Integer,
exam_id: Integer,
start_time: DateTime
}

##Acceptance Criteria:

A client can send the above request and expect the following behavior

###A successful (200 OK) response if:

• the request data is valid and sanitized
• a college exists in the database (college_id)
• an exam exists and belongs to the college (exam_id)
• a user is successfully found or created, and assigned to the exam
• the start_time of the request falls within an Exam's time window

###A bad request (400) response with appropriate error message if:

• the request data is invalid or not clean
• a college with the given college_id is not found
• an exam with the given exam_id is not found or does not belong to the college
• a user fails to be found or created, or failed to get associated with the exam
• a requested start_time does not fall with in an exam's time window

##Data Models to Consider:

• User
• College
• Exam
• ExamWindow
• ApiRequest (bonus points for logging requests and errors)