To Exam Info

IT231 -- Review Guide for Final

Bring to Final

• Two pages of crib notes with writing on both sides.

• The Hex-Dec Conversion Table.

Study

• Course Notes, especially Review Questions at the beginning of each lecture.

• Final Review Questions

• Projects 4, 5, 6, and the Final Website Project.

• The textbook will help fill in the gaps in your knowledge.

Exam Format

• Exam questions will be of the following possible formats:
  Definitions; Short Answer; Short Essay; Multiple Choice; Computer Problems.

Definitions

• Ruby, Rails, DRY, controller, view, action, layout, route, HTML vs. XHTML, CSS, scaffold, CRUD, helper function, Rails datatypes, Rails helper methods (stylesheet_link_tag, image_tag, link_to), IRB, IRB delimiters (<%=, <%, %>), Ruby datatypes, REST, HTTP (GET, POST, PUT, HEAD, DELETE), 5 ways to run Ruby(IRB, batch Ruby script, ERB, Rails console, load script from Rails console), Ruby classes (FixNum, Float, Time, String, TrueClass, FalseClass, Array; see the UML Examples Page for methods. instance variable, method, Ruby object methods common to many objects (new, to_s, to_i, to_f, class, methods), Ruby datatypes (integer, floating point, string, boolean), Ruby operators (=, +, -, *, /, %, ==, <, >, <=, >=, !=, <=>), Ruby control structures (if..else, while), Ruby builtin methods (print, random, STDIN.gets), FormTagHelper methods (form_tag, text_field_tag, select_tag, radio_button_tag, submit_tag), FormHelper methods (form_for, text_field, select, radio_button, submit) model creation software, scaffold creation software, rake, hex color code, ActiveRecord methods (new, find(id), find with conditions, dynamic finder methods, all, save, delete(id), delete_all), fat model, validation, one-many relationship, one-way encryption, one-way encryption (hash, also called digest), base-16, migrations (add column to table, remove column from table), state, session variable.

Be Able To

1. Create a Rails project.
    
2. Create a Rails controller with some views.
    
3. Explain the three steps of adding a new view to a controller after the controller has already been created.
    
4. Modify the HTML and CSS files of a Rails project.
    
   
   • Set the background color for the body, h1, h2, h3, or a
   • Set the text color for the body, h1, h2, h3, or a
   • Set the font family for the body, h1, h2, h3, or a
   • Set the font size for the body, h1, h2, h3, or a.
   • Set the font weight (bold or normal) for the body, h1, h2, or h3.
   • Set the width and height of an image.
   
   
5. Convert a base-10 color code to a hex color code and vice versa.
    
6. Know the hex color codes for the 17 standard HTML named colors.
    
7. Write views that are compatible with a layout.
    
8. Use the Rails helper functions stylesheet_link, image_link, link_to.
    
9. Create a Rails application using scaffold software, according to a simple database design.
    
10. Create a model using Rails model creation software, according to a simple database design.
     
11. Modify a Ruby command line application to display output from the controller on a web page using IRB.
     
12. Write a Rails project that displays an image on a form according to calculations in the controller (like Project 4).
     
13. Use these Rails ActiveRecord methods to extract or modify the data in the database.
     
    
    all   count   delete   delete_all   find   save  
    
    
14. Explain what an array is and how it is used in Rails.
     
15. Test these methods of the Array class:
     
    
    new   length   empty?   delete_at   *   <<   [ ]   each   collect  
    
    
16. Know what FormTagHelper or FormHelper controls are most appropriate to use.
     
17. Use FormTagHelper or FormHelper controls to input data.
     
18. Convert a page that contains FormTagHelper controls to a page with FormHelper controls that stores input data in a database.
     
19. Write views that use the ActiveRecord methods to store or access data.
     
20. Manipulate a database by issuing Ruby statements at the Rails console window.
     
21. Set up a one-many relationship between two models.
     
22. Set up validation for controls on a form: validates_presence_of, validates_numeriality_of, validates_uniqueness_of, validates_format_of.
     
23. Explain what a session variable is.
     
24. Use a session variable to hold state information.
     
25. Use Digest::SHA2.hexdigest to encode passwords.
     
26. Write Rails migrations to add a column or remove a column from a database.
     
27. Given source code for a Rails project, find the errors.
     
28. Given scaffold-generated source code for a Rails project with a one-to-many relationship, modify the source code as requested.