step_file_reference.md

StepFile Reference

A StepFile is a DSL for describing a series of instructions, possibly nested inside other instructions. Technically speaking it is an internal Ruby DSL which means it parses as Ruby code. Nested blocks use Ruby's do..end structures, named options use Ruby's hash syntax, and string options may use any of Ruby's myriad string formats (double-quote, single-quote, here doc, percent-q, etc.)

Here Docs are especially useful with messages since you can just dump in markdown between <<-MARKDOWN and MARKDOWN declarations.

steps

• steps support nested content via do and end

• indents the nested block content

• inside the nested block, the step count is reset, then resumes afterwards, e.g.

    Step 1: steal underpants
    Step 2: do the hokey pokey
      | Step 1: put your left foot in
      | Step 2: take your left foot out
      | Step 3: put your left foot in again
      | Step 4: shake it all about
    Step 3: profit!
  

step "name"

• creates a new step heading
• maintains a count of steps at the same level
• prefixes name with e.g. "Step 1:"

goals do

• a titled, formatted list of goals

goal "text"

• an individual goal (marked up with <li>)
• text can be markdown

steps do

• a titled, formatted list of steps

explanation do

• a titled, formatted block for a summary of what the student just did

link "name"

• links to a step whose file name is filename

next_step "name"

• makes a new step named "Next Step:"
• links to a step whose file name is filename

option "name"

• creates a step which is named "Option 1: foo" instead "Step 1: foo"
• supports nested blocks, which reset the step count again

insert "filename"

• inserts the contents of one file inside another
• a way to do "partials"
• current limitations:
  • only works with .step files
  • inserted file must be in same directory as inserting file
  • prepends an underscore to the file name

messages

message "text"

• makes a paragraph of text anywhere in the document
• the text parameter is passed through a Markdown converter

important "text"

• like a message, but called out in a red box

tip "name" do

• called out in a blue box
• the name is not markdown, but is an optional bold title for the tip box
• content should be inside a nested block

special

Special elements do not format their text as Markdown.

console "text"

• indicates that the student should type something in the terminal
• says "type this in the terminal:" and then puts the text in a pre block
• [should this be named terminal or type instead?]

result "text"

• indicates that the student should see some output in the terminal
• says "expected result:" and then puts the text in a pre block

verify

verify "name"

• usually contains console and result notes
• kind of like a step, but doesn't increment the number count

irb "text"

• like "console" but indicates that the student should type something into irb

erector elements

StepFile is an Erector-based DSL, so if you want to insert HTML tags or other stuff, use the appropriate Erector methods, e.g.

step "figure out your OS version" do
  message "Mac OS has code names, including:"
  table do
    tr do
     th "Leopard"
     td "OS X 10.5"
    end
    tr do
     th "Snow Leopard"
     td "OS X 10.6"
    end
  end
end