Module: Rails::Surrender::ModelFilterScopes::ClassMethods

Defined in:
lib/rails/surrender/model_filter_scopes.rb

Instance Method Summary collapse

Instance Method Details

#apply_surrender_column_datetime_scopes(child) ⇒ Object 



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# File 'lib/rails/surrender/model_filter_scopes.rb', line 39

def apply_surrender_column_datetime_scopes(child)
  with_surrender_datetime_columns(child) do |column|
    base = column.split(/_at$/).first

    scope "filter_by_#{base}_to".to_sym, ->(time) { where("#{child.table_name}.#{column} <= ?", time) }
    scope "filter_by_#{base}_from".to_sym, ->(time) { where("#{child.table_name}.#{column} >= ?", time) }
    scope "filter_by_#{base}_before".to_sym, ->(time) { where("#{child.table_name}.#{column} < ?", time) }
    scope "filter_by_#{base}_after".to_sym, ->(time) { where("#{child.table_name}.#{column} > ?", time) }
  end
end

#apply_surrender_column_name_scopes(child) ⇒ Object 



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# File 'lib/rails/surrender/model_filter_scopes.rb', line 33

def apply_surrender_column_name_scopes(child)
  child.column_names.each do |column|
    scope "filter_by_#{column}".to_sym, ->(val) { where({ column.to_sym => val }) }
  end
end

#inherited(child) ⇒ Object 



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# File 'lib/rails/surrender/model_filter_scopes.rb', line 13

def inherited(child)
  super

  # Bad things happen if you ask table_exists? to ApplicationRecord while it's loading!
  # TODO: Add configuration in case ApplicationRecord is _not_ the primary abstract class
  return if child.name == 'ApplicationRecord'

  return unless child.table_exists?

  child.instance_eval do
    # scope to filter by every column name
    apply_surrender_column_name_scopes(child)

    # scope to filter by date or time column names
    apply_surrender_column_datetime_scopes(child)
  rescue StandardError
    # TODO: why are tests failing here!!!
  end
end

#with_surrender_datetime_columns(child, &block) ⇒ Object 



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# File 'lib/rails/surrender/model_filter_scopes.rb', line 50

def with_surrender_datetime_columns(child, &block)
  child.columns.select { |c| c.type.in? %i[date datetime] }.map(&:name).each(&block)
end