Class: Moka::SiteTree::NodeArray

Inherits:
Array show all
Defined in:
lib/commands/lib/site_tree.rb

Instance Method Summary collapse

Methods inherited from Array

#extract_options!

Instance Method Details

#find(name) ⇒ Object

Returns the element having the value of the variable name equal to the argument, or nil if such an element does not exist.



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# File 'lib/commands/lib/site_tree.rb', line 210

def find(name)
  self.each do |c|
    if c.respond_to?(:name) and c.name == name.to_s
      return c
    end
  end
  return nil
end

#order_by(ordering_var) ⇒ Object

Orders the elements by a variable. The elements that do not have that variable are placed last.



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# File 'lib/commands/lib/site_tree.rb', line 220

def order_by(ordering_var)
  return self.sort do |a, b|
    if a.respond_to?(ordering_var.to_sym) and b.respond_to?(ordering_var.to_sym)
      a.send(ordering_var.to_sym) <=> b.send(ordering_var.to_sym)
    else
      if b.respond_to?(ordering_var.to_sym)
        -1
      else
        1
      end
    end
  end
end

#where(conditions) ⇒ Object

Returns another NodeArray containing only the elements satisfying the conditions. conditions can be a Hash containing pairs variable_name => variable_value or a string to be evalued as ruby code.

Examples:

@site.groups.where(=> somevalue, :another_var => another_value)

@site.groups.where(“order < 5”)



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# File 'lib/commands/lib/site_tree.rb', line 242

def where(conditions)
  found = NodeArray.new
  self.each do |c|
    if conditions.is_a? Hash
      satisfied = true
      conditions.each do |var_name, var_value|
        unless c.respond_to?(var_name.to_sym) and c.send(var_name.to_sym) == var_value
          satisfied = false
          break
        end
      end
      if satisfied
        found << c
      end
    else # conditions should be a string (or something that acts like one)
      if c.instance_eval(conditions)
        found << c
      end
    end
  end
  return found
end