Module: Perron::Resource::Sourceable

Extended by:
ActiveSupport::Concern
Included in:
Perron::Resource
Defined in:
lib/perron/resource/sourceable.rb

Constant Summary collapse

MODES = 
{
  single: ->(dataset) { dataset.zip },
  combinations: ->(dataset) { dataset.to_a.combination(2).to_a }
}

Instance Method Summary collapse

Instance Method Details

#source ⇒ Object Also known as: sources 



148
149
150
151
152
153
154
155
156
157
158
159
160
161
 
# File 'lib/perron/resource/sourceable.rb', line 148

def source
  @source ||= begin
    data = self.class.source_definitions.each_with_object({}) do |(name, options), hash|
      primary_key = options[:primary_key]
      singular_name = name.to_s.singularize
      identifier = frontmatter["#{singular_name}_#{primary_key}"]

      dataset = self.class.send(:resolve, name)
      hash[name] = dataset.find { it.public_send(primary_key).to_s == identifier.to_s }
    end

    Source.new(data)
  end
end

#source_backed? ⇒ Boolean

Returns:

  • (Boolean) 


146
 
# File 'lib/perron/resource/sourceable.rb', line 146

def source_backed? = self.class.source_backed?

#source_template(source) ⇒ Object

Raises:

  • (NotImplementedError) 


164
165
166
 
# File 'lib/perron/resource/sourceable.rb', line 164

def source_template(source)
  raise NotImplementedError, "#{self.class.name} must implement #source_template"
end