class Dynorm::KeyExpression

Public Class Methods

new(attributes) click to toggle source
# File lib/dynorm/key_expression.rb, line 5
def initialize(attributes)
  @attributes = attributes
end

Public Instance Methods

attribute_names() click to toggle source
# File lib/dynorm/key_expression.rb, line 9
def attribute_names
  @attributes.keys.each_with_object({}) do |value, hash|
    hash["##{value}_name"] = value
  end
end
attribute_values() click to toggle source
# File lib/dynorm/key_expression.rb, line 15
def attribute_values
  @attributes.keys.each_with_object({}) do |value, hash|
    hash[":#{value}_value"] = @attributes[value]
  end
end
key_condition_expression() click to toggle source
# File lib/dynorm/key_expression.rb, line 21
def key_condition_expression
  @attributes.map do |attr|
    "##{attr[0]}_name = :#{attr[0]}_value"
  end.join(' and ')
end
params() click to toggle source
# File lib/dynorm/key_expression.rb, line 27
def params
  {
    expression_attribute_names: attribute_names,
    expression_attribute_values: attribute_values,
    key_condition_expression: key_condition_expression
  }
end