Class: LcpRuby::Search::CustomFilterInterceptor

Inherits:
Object
  • Object
show all
Defined in:
lib/lcp_ruby/search/custom_filter_interceptor.rb

Class Method Summary collapse

Class Method Details

.apply(scope, filter_params, model_class, evaluator) ⇒ Object

Detects and calls filter_* class methods on the model class. Returns [updated_scope, remaining_params] where remaining_params has the intercepted keys removed.



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# File 'lib/lcp_ruby/search/custom_filter_interceptor.rb', line 7

def self.apply(scope, filter_params, model_class, evaluator)
  return [ scope, filter_params ] if filter_params.blank?

  remaining = filter_params.dup

  filter_params.each do |key, value|
    method_name = "filter_#{key}"
    next unless own_filter_method?(model_class, method_name)

    result = model_class.send(method_name, scope, value, evaluator)

    if result.is_a?(ActiveRecord::Relation)
      scope = result
      remaining.delete(key)
    else
      Rails.logger.warn(
        "[LcpRuby::Search] filter_#{key} on #{model_class.name} did not return " \
        "ActiveRecord::Relation (got #{result.class}), skipping"
      )
    end
  end

  [ scope, remaining ]
end

.own_filter_method?(model_class, method_name) ⇒ Boolean

Returns true if the method is defined on the model’s singleton class (not inherited from ActiveRecord::Base or other ancestors).

Returns:

  • (Boolean) 


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# File 'lib/lcp_ruby/search/custom_filter_interceptor.rb', line 34

def self.own_filter_method?(model_class, method_name)
  model_class.respond_to?(method_name) &&
    !ActiveRecord::Base.respond_to?(method_name)
end