Class: BabySqueel::Resolver

Inherits:
Object
  • Object
show all
Defined in:
lib/baby_squeel/resolver.rb

Instance Method Summary collapse

Constructor Details

#initialize(table, strategies) ⇒ Resolver

Returns a new instance of Resolver.



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# File 'lib/baby_squeel/resolver.rb', line 3

def initialize(table, strategies)
  @table       = table
  @strategies  = strategies
end

Instance Method Details

#resolve(name, *args, &block) ⇒ Object

Attempt to determine the intent of the method_missing. If this method returns nil, that means one of two things:

  1. The argument signature is invalid.

  2. The name of the method called is not valid (ex. invalid column name)



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# File 'lib/baby_squeel/resolver.rb', line 13

def resolve(name, *args, &block)
  strategy = @strategies.find do |strategy|
    valid?(strategy, name, *args, &block)
  end

  build(strategy, name, *args, &block)
end

#resolve!(name, *args, &block) ⇒ Object

Try to resolve the method_missing. If we fail to resolve, there are two outcomes:

If any of the configured strategies accept argument signature provided, raise an error. This means we failed to resolve the name. (ex. invalid column name)

Otherwise, a nil return valid indicates that argument signature was not valid for any of the configured strategies. This case should be treated as a NoMethodError.



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# File 'lib/baby_squeel/resolver.rb', line 31

def resolve!(name, *args, &block)
  if resolution = resolve(name, *args, &block)
    return resolution
  end

  if compatible_arguments?(*args, &block)
    raise NotFoundError.new(@table._scope.model_name, name, @strategies)
  end

  return nil
end

#resolves?(name) ⇒ Boolean

Used to determine if a table can respond_to? a method.

Returns:

  • (Boolean) 


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# File 'lib/baby_squeel/resolver.rb', line 44

def resolves?(name)
  @strategies.any? do |strategy|
    valid_name? strategy, name
  end
end