class ActiveScaffold::DataStructures::NestedInfoAssociation
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# File lib/active_scaffold/data_structures/nested_info.rb, line 80 def initialize(model, params) super column = parent_scaffold.active_scaffold_config.columns[params[:association].to_sym] @param_name = column.model.name.foreign_key.to_sym @parent_id = params[@param_name] @association = column&.association @child_association = association.reverse_association(model) if association setup_constrained_fields end
ActiveScaffold::DataStructures::NestedInfo::new
Public Instance Methods
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# File lib/active_scaffold/data_structures/nested_info.rb, line 114 def create_through_singular? association.through_singular? && source_reflection.reverse end
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# File lib/active_scaffold/data_structures/nested_info.rb, line 118 def create_with_parent? if has_many? && !association.through? false elsif child_association || create_through_singular? true end end
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# File lib/active_scaffold/data_structures/nested_info.rb, line 146 def default_sorting(chain) return @default_sorting if defined? @default_sorting return unless association.scope.is_a?(Proc) && chain.respond_to?(:values) && chain.values[:order] @default_sorting = chain.values[:order] @default_sorting = @default_sorting.map(&:to_sql) if @default_sorting[0].is_a? Arel::Nodes::Node @default_sorting = @default_sorting.join(', ') end
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# File lib/active_scaffold/data_structures/nested_info.rb, line 134 def match_model?(model) if association.polymorphic? child_association&.inverse_klass == model else association.klass == model end end
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# File lib/active_scaffold/data_structures/nested_info.rb, line 103 def readonly_through_association?(columns) return false unless through_association? return true if association.through_reflection.options[:through] # create not possible, too many levels return true if association.source_reflection.options[:through] # create not possible, too many levels return false if create_through_singular? # create allowed, AS has code for this return false unless association.source_reflection.collection? # create allowed if source is singular, rails creates joint model # create allowed only if through reflection in record to be created is included in create columns !child_association || columns.exclude?(child_association.through_reflection.name) end
A through association with has_one or has_many as source association create cannot be called in nested through associations, and not-nested through associations, unless:
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is through singular and source association has reverse, e.g.: Employee belongs to vendor, Vendor has many rates, Rate belongs to vendor, Employee has many rates through vendor Rates association through singular association vendor, source association in Vendor (rates) has reverse (vendor in Rate) AS will assign the vendor of the employee to the new Rate
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source association is singular, e.g.: Customer has many networks, Network has one (or belongs to) firewall, Customer has many firewalls through networks
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create columns include through association of reverse association, e.g.: Vendor has many employees, Employee has many rates, Vendor has many rates through employees, Rate has one vendor through employee RatesController has employee in create action columns (reverse is vendor, and through association employee is in create form).
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# File lib/active_scaffold/data_structures/nested_info.rb, line 142 def sorted?(chain) default_sorting(chain).present? end
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# File lib/active_scaffold/data_structures/nested_info.rb, line 126 def source_reflection @source_reflection ||= ActiveScaffold::DataStructures::Association::ActiveRecord.new(association.source_reflection) end
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# File lib/active_scaffold/data_structures/nested_info.rb, line 130 def through_association? association.through? end
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# File lib/active_scaffold/data_structures/nested_info.rb, line 155 def to_params super.merge(association: @association.name, @param_name => parent_id) end
ActiveScaffold::DataStructures::NestedInfo#to_params
Protected Instance Methods
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# File lib/active_scaffold/data_structures/nested_info.rb, line 161 def setup_constrained_fields @constrained_fields = [] if association.belongs_to? || association.through? @constrained_fields ||= Array(association.foreign_key).map(&:to_sym) return unless child_association && child_association != association @constrained_fields << child_association.name @constrained_fields << child_association.foreign_type.to_sym if child_association.polymorphic? end