Module: Reports::HasManyOptions

Defined in:
app/commands/reports/has_many_options.rb

Class Method Summary collapse

Class Method Details

.association_and_descendants(association) ⇒ Object 



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# File 'app/commands/reports/has_many_options.rb', line 88

def self.association_and_descendants(association)
  [
    [association.klass, association.name.to_s],
    *association.klass.descendants.map { |d| [d, format_descendent_name(d, association)] }
  ]
end

.build_resource_name(name) ⇒ Object 



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# File 'app/commands/reports/has_many_options.rb', line 84

def self.build_resource_name(name)
  Reports::Generator.build_option_name(name).delete(" ")
end

.flattener(klass) ⇒ Object 



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# File 'app/commands/reports/has_many_options.rb', line 20

def self.flattener(klass)
  Flattener.for(klass).pivot_or_self
end

.format_descendent_name(descendant, association) ⇒ Object

To avoid naming conflicts, suffix the descendant's name with the association unless the association's name matches the association's klass name



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# File 'app/commands/reports/has_many_options.rb', line 97

def self.format_descendent_name(descendant, association)
  if association.name.to_s.classify == association.klass.name.demodulize
    descendant.name.tableize
  else
    "#{descendant.name.underscore}_#{association.name}"
  end
end

.generate_filter_options(klass, nested_as: nil, **_options) ⇒ Object 



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# File 'app/commands/reports/has_many_options.rb', line 16

def self.generate_filter_options(klass, nested_as: nil, **_options)
  generate_options(klass: klass, type: "Filter", nested_as: nested_as)
end

.generate_options(klass:, type:, nested_as: nil, **_options) ⇒ Object 



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# File 'app/commands/reports/has_many_options.rb', line 34

def self.generate_options(klass:, type:, nested_as: nil, **_options)
  Enumerator.new do |yielder|
    # Yield a select option for each belongs to association
    has_many_associations(klass).each do |association|
      expansions = Array(association.expand_on)
      assoc_name = build_resource_name(association.name).singularize
      break if assoc_name == "Favorite"
      association_resource_id = Reports::ExternalGraphqlClient.
        query_resource_by_name(name: assoc_name)&.
        dig("data", "resourceName", "id")
      # to define the join resource, we need to define the join association on the flattener we let a commented example on projects
      join_resource_id =
        if association.join_resource.present?
          Reports::ExternalGraphqlClient.
            query_resource_by_name(name: build_resource_name(association.join_resource))&.
            dig("data", "resourceName", "id")
        end
      # join_name = join_resource.dig("data", "resourceName", "name")
      next if association_resource_id.blank?
      association_and_descendants(association).each do |_association_klass, association_name|
        expansions.each do |expansion|
          option = {
            name: ::Reports::Generator.build_option_name(*expansion, association_name),
            associationResourceId: association_resource_id.to_i,
            associationName: association_name,
            associationColumnName: [*nested_as, association.foreign_key].join("_"),
          }
          option[:joinResourceId] = join_resource_id if join_resource_id.present?
          option[:columnType] = "link" if type == "Select"
          option[:selectOptionType] = "HasMany" if type == "Select"
          option[:filterOptionType] = "HasMany" if type == "Filter"
          yielder << option
        end

        option = {
          name: ::Reports::Generator.build_option_name(association_name),
          associationResourceId: association_resource_id.to_i,
          associationName: association_name,
          associationColumnName: [*nested_as, association.foreign_key].join("_"),
        }
        option[:joinResourceId] = join_resource_id if join_resource_id.present?
        option[:columnType] = "link" if type == "Select"
        option[:selectOptionType] = "HasMany" if type == "Select"
        option[:filterOptionType] = "HasMany" if type == "Filter"
        yielder << option
      end
    end
  end
end

.generate_select_options(klass, nested_as: nil, **_options) ⇒ Object

Generate select options (attributes) for all associations with nested attributes for the given class.



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# File 'app/commands/reports/has_many_options.rb', line 8

def self.generate_select_options(klass, nested_as: nil, **_options)
  generate_options(
    klass: klass,
    type: "Select",
    nested_as: nested_as
  )
end

.has_many_associations(klass) ⇒ Object

Returns a lazy enumerator which yields the belongs_to associations (only those available for reports) for the given class.



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# File 'app/commands/reports/has_many_options.rb', line 25

def self.has_many_associations(klass)
  flattener(klass).associations.lazy.
    reject(&:is_constant?).
    reject(&:is_nested_attributes?).
    select { |association| association.macro == :has_many }.
    reject { |association| association.ar_association.through_reflection }.
    reject { |association| association.flattener.class.is_pivot? }
end