Class: AirctiveRecord::Relation

Inherits:
Airrel::Relation
  • Object
show all
Defined in:
lib/airctiverecord/relation.rb

Overview

Base Relation class - models create subclasses of this Each model's relation knows about that model's field mappings and scopes

Instance Method Summary collapse

Instance Method Details

#spawn ⇒ Object

spawn returns a new instance of the same Relation subclass



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# File 'lib/airctiverecord/relation.rb', line 43

def spawn
  self.class.new(klass).tap do |relation|
    relation.instance_variable_set(:@where_clause, @where_clause)
    relation.instance_variable_set(:@order_values, @order_values.dup)
    relation.instance_variable_set(:@limit_value, @limit_value)
    relation.instance_variable_set(:@offset_value, @offset_value)
  end
end

#to_airtable_params ⇒ Object

override to use field mappings when building airtable params



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# File 'lib/airctiverecord/relation.rb', line 19

def to_airtable_params
  params = {}

  # filter
  params[:filter] = @where_clause.to_airtable_formula if @where_clause.any?

  # sort - use field mappings
  if @order_values.any?
    params[:sort] = @order_values.map do |field, direction|
      mapped_field = klass.field_mappings[field.to_s] || field.to_s
      { field: mapped_field, direction: direction.to_s }
    end
  end

  # limit
  params[:max_records] = @limit_value if @limit_value

  # offset
  params[:offset] = @offset_value if @offset_value

  params
end

#where(conditions) ⇒ Object

override where to apply field mappings when building formulas from hashes



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# File 'lib/airctiverecord/relation.rb', line 8

def where(conditions)
  if conditions.is_a?(Hash)
    # build formula with field mappings
    formula = Airrel::FormulaBuilder.hash_to_formula(conditions, klass.field_mappings)
    super(formula)
  else
    super
  end
end