Class: Dart::NamingConventions::ForeignKeyFinder

Inherits:
Object
  • Object
show all
Defined in:
lib/dart/naming_conventions/foreign_key_finder.rb

Instance Method Summary collapse

Instance Method Details

#foreign_keys_for(relation, schema) ⇒ Object

Returns a set of possible foreign keys based on columns in this relation matching the naming convention and reference a table name that is in the given schema

Parameters:

  • relation (Relation) —

    the relation to search

  • schema (Schema) —

    defines the set of referenceable tables



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# File 'lib/dart/naming_conventions/foreign_key_finder.rb', line 11

def foreign_keys_for(relation, schema)
  naming_conventions = Dart::NamingConventions.instance
  relation.column_names.map do |possible_foreign_key|
    if parent_table = naming_conventions.parent_table_for(possible_foreign_key)
      if schema.has_table?(parent_table)
        ForeignKeyInfo.new(relation.table_name,
                           possible_foreign_key,
                           parent_table,
                           naming_conventions.conventional_primary_key)
      end
    end
  end.compact
end