Class: FloorManager::Employee::Template

Inherits:
Object
  • Object
show all
Defined in:
lib/floor_manager/employee.rb

Overview

Base class for employees. No instances of this should be created.

Direct Known Subclasses

Unique

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(klass_name, namespace = nil) ⇒ Template

Returns a new instance of Template.



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# File 'lib/floor_manager/employee.rb', line 10

def initialize(klass_name, namespace=nil)
  @klass_name = klass_name
  @namespace = namespace
  @attributes = Hash.new { |h,k| h[k] = Array.new }
end

Class Method Details

.from_dsl(klass_name, namespace = nil, &block) ⇒ Object 



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# File 'lib/floor_manager/employee.rb', line 6

def self.from_dsl(klass_name, namespace=nil, &block)
  new(klass_name, namespace).tap { |emp| DSL.new(emp, &block) }
end

Instance Method Details

#add_attribute(filter, action) ⇒ Object

Add an attribute to set. The action should implement the AttributeAction interface. This method is mainly used by the DSL to store actions to take.



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# File 'lib/floor_manager/employee.rb', line 54

def add_attribute filter, action
  @attributes[filter] << action
end

#apply_attributes(instance, filter, floor, overrides = {}) ⇒ Object

Modify attribute values in instance, setting them to what was specified in the factory for this employee and then overriding them with what was given in overrides.



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# File 'lib/floor_manager/employee.rb', line 70

def apply_attributes(instance, filter, floor, overrides={})
  # First apply all attributes that were given in the factory definition. 
  @attributes[filter].
    each do |action|
      action.apply(instance, floor, self)
    end

  # Then override with what the user just gave us.
  overrides.each do |name, value|
    AttributeAction::Immediate.new(name, value).apply(instance, floor, self)
  end
end

#attrs(floor, overrides) ⇒ Object

Returns just the attributes that would be used.



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# File 'lib/floor_manager/employee.rb', line 40

def attrs(floor, overrides)
  build(floor, overrides).attributes
end

#build(floor, overrides) ⇒ Object

Build this employee in memory.



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# File 'lib/floor_manager/employee.rb', line 18

def build(floor, overrides)
  produce_instance.tap { |i| 
    apply_attributes(i, :none, floor, overrides) }
end

#camelcase(str) ⇒ Object 



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# File 'lib/floor_manager/employee.rb', line 62

def camelcase(str)
  str.gsub(%r((^|_)\w)) { |match| match[-1].upcase }
end

#create(floor, overrides) ⇒ Object

Create this employee in the database.



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# File 'lib/floor_manager/employee.rb', line 25

def create(floor, overrides)
  produce_instance.tap { |i| 
    apply_attributes(i, :none, floor, overrides)
    
    i.save or fail "Could not create instance of #{@klass_name.inspect}."
    
    unless @attributes[:after_create].empty?
      apply_attributes(i, :after_create, floor) 
      i.save or fail "Could not save after_create."
    end
  }
end

#produce_instance ⇒ Object 



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# File 'lib/floor_manager/employee.rb', line 58

def produce_instance
  name = camelcase(@klass_name.to_s)
  (@namespace || Object).const_get(name).new
end

#reset ⇒ Object

Reset this employee between test runs.



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# File 'lib/floor_manager/employee.rb', line 46

def reset
  # Empty, but subclasses will override this.
end