Class: SetBuilder::Set

Inherits:
Object
  • Object
show all
Defined in:
lib/set_builder/set.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(model_or_scope, raw_data) ⇒ Set

Returns a new instance of Set.



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# File 'lib/set_builder/set.rb', line 6

def initialize(model_or_scope, raw_data)
  @model, @scope = get_model_and_scope(model_or_scope)
  @set = raw_data
end

Instance Attribute Details

#model ⇒ Object (readonly)

Returns the value of attribute model.



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# File 'lib/set_builder/set.rb', line 13

def model
  @model
end

Instance Method Details

#constraints ⇒ Object 



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# File 'lib/set_builder/set.rb', line 17

def constraints
  @constraints ||= get_constraints
end

#perform ⇒ Object

Returns an instance of ActiveRecord::NamedScope::Scope which can fetch the objects which belong to this set



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# File 'lib/set_builder/set.rb', line 45

def perform
  constraints.inject(@scope) {|scope, constraint| constraint.perform(scope)}
end

#to_s ⇒ Object

Describes this set in natural language



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# File 'lib/set_builder/set.rb', line 35

def to_s
  constraints.to_sentence
end

#valid? ⇒ Boolean

Returns true if all of the constraints in this set are valid

Returns:

  • (Boolean) 


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# File 'lib/set_builder/set.rb', line 26

def valid?
  constraints.all?(&:valid?)
end