Module: RailsExtend::Models

Extended by:
Models
Included in:
Models
Defined in:
lib/rails_extend/models.rb

Instance Method Summary collapse

Instance Method Details

#db_tables_hash ⇒ Object 



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# File 'lib/rails_extend/models.rb', line 18

def db_tables_hash
  result = {}

  models.group_by(&->(i) { i.connection.migrations_paths }).each do |migrations_paths, record_classes|
    result[migrations_paths] = migrate_tables_hash
  end

  result
end

#ignore_models ⇒ Object 



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# File 'lib/rails_extend/models.rb', line 108

def ignore_models
  models.group_by(&->(i){ i.attributes_to_define_after_schema_loads.size }).transform_values!(&->(i) { i.map(&:to_s) })
end

#migrate_modules_hash ⇒ Object 



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# File 'lib/rails_extend/models.rb', line 82

def migrate_modules_hash
  @modules = {}

  models.group_by(&:module_parent).each do |module_name, record_classes|
    new_prefix = (module_name.respond_to?(:table_name_prefix) && module_name.table_name_prefix) || ''
    old_prefix = (module_name.respond_to?(:old_table_name_prefix) && module_name.old_table_name_prefix) || ''

    record_classes.each do |record_class|
      unless record_class.table_exists?
        possible = record_class.table_name.sub(/^#{new_prefix}/, old_prefix)
        @modules.merge! record_class.table_name => possible if tables.any?(possible)
      end
    end
  end

  arr = @modules.values
  result = arr.find_all { |e| arr.rindex(e) != arr.index(e) }
  warn "Please check #{result}"

  @modules
end

#migrate_tables_hash ⇒ Object 



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# File 'lib/rails_extend/models.rb', line 64

def migrate_tables_hash
  tables = {}

  tables_hash.each do |table_name, cols|
    db = cols[:models][0].migrate_attributes_by_db

    r = cols.slice(:indexes, :table_exists)
    r[:add_attributes] = cols[:model_attributes].except *db.keys
    r[:add_references] = cols[:model_references].except *db.keys
    r[:timestamps] = ['created_at', 'updated_at'] & r[:add_attributes].keys
    r[:remove_attributes] = db.except(*cols[:model_attributes].keys, *cols[:belongs_attributes].keys, *cols[:model_defaults])

    tables[table_name] = r unless r[:add_attributes].blank? && r[:add_references].blank? && r[:remove_attributes].blank?
  end

  tables
end

#model_names ⇒ Object 



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# File 'lib/rails_extend/models.rb', line 116

def model_names
  models.map(&:to_s)
end

#models ⇒ Object 



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# File 'lib/rails_extend/models.rb', line 10

def models
  return @models if defined? @models
  Zeitwerk::Loader.eager_load_all
  @models = ActiveRecord::Base.descendants
  @models.reject!(&:abstract_class?)
  @models
end

#models_hash(root = ActiveRecord::Base) ⇒ Object 



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# File 'lib/rails_extend/models.rb', line 4

def models_hash(root = ActiveRecord::Base)
  return @models_hash if defined? @models_hash
  Zeitwerk::Loader.eager_load_all
  @models_hash = root.subclasses_tree
end

#tables ⇒ Object 



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# File 'lib/rails_extend/models.rb', line 112

def tables
  ActiveRecord::Base.connection.tables
end

#tables_hash(root = ActiveRecord::Base, records_hash = models_hash) ⇒ Object 



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# File 'lib/rails_extend/models.rb', line 28

def tables_hash(root = ActiveRecord::Base, records_hash = models_hash)
  @tables ||= {}

  records_hash[root].each_key do |node|
    next if RailsExtend.config.ignore_models.include?(node.to_s)

    unless node.abstract_class?
      @tables[node.table_name] ||= {}
      r = @tables[node.table_name]
      r[:models] ||= []
      r[:models] << node

      r[:table_exists] = r[:table_exists] || node.table_exists?

      r[:model_attributes] ||= {}
      r[:model_attributes].reverse_merge! node.migrate_attributes_by_model

      r[:model_references] ||= {}
      r[:model_references].reverse_merge! node.references_by_model

      r[:indexes] ||= []
      r[:indexes] |= node.indexes_by_model

      r[:model_defaults] ||= []
      r[:model_defaults] |= node.attributes_by_default

      r[:belongs_attributes] ||= {}
      r[:belongs_attributes].reverse_merge! node.attributes_by_belongs
    end

    tables_hash(node, records_hash[root])
  end

  @tables
end

#unbound_tables ⇒ Object 



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# File 'lib/rails_extend/models.rb', line 104

def unbound_tables
  tables - models.map(&:table_name) - ['schema_migrations', 'ar_internal_metadata']
end