Module: RailsExtend::ActiveRecord::Extend

Defined in:
lib/rails_extend/active_record/extend.rb

Instance Method Summary collapse

Instance Method Details

#attributes_by_belongs ⇒ Object 



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# File 'lib/rails_extend/active_record/extend.rb', line 160

def attributes_by_belongs
  results = {}

  reflections.values.select(&->(reflection){ reflection.belongs_to? }).each do |reflection|
    results.merge! reflection.foreign_key => {
      input_type: :integer  # todo 考虑 foreign_key 不是自增 ID 的场景
    }
    results.merge! reflection.foreign_type => { input_type: :string } if reflection.foreign_type
  end
  results.except! *attributes_by_model.keys.map(&:to_s)

  results
end

#attributes_by_default ⇒ Object 



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# File 'lib/rails_extend/active_record/extend.rb', line 152

def attributes_by_default
  if table_exists?
    [primary_key] + all_timestamp_attributes_in_model
  else
    []
  end
end

#attributes_by_model ⇒ Object 



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# File 'lib/rails_extend/active_record/extend.rb', line 49

def attributes_by_model
  cols = {}

  attributes_to_define_after_schema_loads.each do |name, column|
    r = {}
    r.merge! type: column[0]

    if r[:type].respond_to? :call
      r.merge! type: r[:type].call(ActiveModel::Type::String.new)
    end

    if r[:type].respond_to?(:type)
      r.merge! raw_type: r[:type].type
    else
      r.merge! raw_type: r[:type] # 兼容 rails 7 以下
    end

    case r[:type].class.name
    when 'ActiveRecord::ConnectionAdapters::PostgreSQL::OID::Array'
      r.merge! array: true
    when 'ActiveRecord::ConnectionAdapters::PostgreSQL::OID::Range'
      r.merge! range: true
    end

    if r[:type].respond_to?(:options) && r[:type].options.present?
      r.merge! r[:type].options
    end

    if Rails::VERSION::MAJOR >= 7 && !column[1].instance_of?(Object) # Rails 7, column[1] 为默认值
      r.merge! default: column[1]
    elsif Rails::VERSION::MAJOR < 7 # rails 7 以下, column[1] 为 options
      r.merge! column[1]
    end

    cols.merge! name => r
  end

  cols
end

#column_attributes ⇒ Object 



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# File 'lib/rails_extend/active_record/extend.rb', line 35

def column_attributes
  columns.map do |column|
    r = {
      name: column.name.to_sym,
      type: column.type
    }
    r.merge! null: column.null unless column.null
    r.merge! default: column.default unless column.default.nil?
    r.merge! comment: column.comment if column.comment.present?
    r.merge! column.sql_type_metadata.instance_values.slice('limit', 'precision', 'scale').compact
    r.symbolize_keys!
  end
end

#com_column_names ⇒ Object 



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# File 'lib/rails_extend/active_record/extend.rb', line 31

def com_column_names
  column_names - attributes_by_default + attachment_reflections.keys
end

#human_name ⇒ Object 



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# File 'lib/rails_extend/active_record/extend.rb', line 4

def human_name
  model_name.human
end

#indexes_by_model ⇒ Object 



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# File 'lib/rails_extend/active_record/extend.rb', line 188

def indexes_by_model
  indexes = indexes_to_define_after_schema_loads
  indexes.map! do |index|
    index.merge! index_options: index.slice(:unique, :name).inject('') { |s, h| s << ", #{h[0]}: #{h[1].inspect}" }
  end
end

#migrate_attributes_by_db ⇒ Object 



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# File 'lib/rails_extend/active_record/extend.rb', line 132

def migrate_attributes_by_db
  return {} unless table_exists?
  cols = {}

  columns_hash.each do |name, column|
    r = { type: column.type }
    r.merge! migrate_type: r[:type]
    r.merge! null: column.null unless column.null
    r.merge! default: column.default unless column.default.nil?
    r.merge! comment: column.comment if column.comment.present?
    r.merge! column.sql_type_metadata.instance_values.slice('limit', 'precision', 'scale').compact
    r.symbolize_keys!
    r.merge! attribute_options: r.slice(:limit, :precision, :scale, :null, :index, :array, :size, :default, :comment).inject('') { |s, h| s << ", #{h[0]}: #{h[1].inspect}" }

    cols.merge! name => r
  end

  cols
end

#migrate_attributes_by_model ⇒ Object 



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# File 'lib/rails_extend/active_record/extend.rb', line 89

def migrate_attributes_by_model
  cols = {}
  attributes_by_model.each do |name, column|
    r = {}
    r.merge! column
    r.merge! migrate_type: column[:raw_type]
    r.symbolize_keys!

    if r[:type].respond_to? :migrate_type
      r.merge! migrate_type: r[:type].migrate_type
    end

    if r[:default].respond_to?(:call)
      r.delete(:default)
    end

    if r[:array] && connection.adapter_name != 'PostgreSQL'
      r.delete(:array)
      r[:migrate_type] = :json
      r.delete(:default) if r[:default].is_a? Array
    end

    if r[:migrate_type] == :json
      if connection.adapter_name == 'PostgreSQL' # Postgres 替换 json 为 jsonb
        r[:migrate_type] = :jsonb
      else
        r.delete(:default) # mysql 数据库不能接受 json 的默认值
      end
    end

    if r[:migrate_type] == :jsonb && connection.adapter_name != 'PostgreSQL'
      r[:migrate_type] == :json
      r.delete(:default)
    end

    r.merge! attribute_options: r.slice(:limit, :precision, :scale, :null, :index, :array, :range, :size, :default, :comment).inject('') { |s, h| s << ", #{h[0]}: #{h[1].inspect}" }

    cols.merge! name => r
  end

  cols
end

#references_by_model ⇒ Object 



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# File 'lib/rails_extend/active_record/extend.rb', line 174

def references_by_model
  results = {}
  refs = reflections.values.select(&->(reflection){ reflection.belongs_to? })
  refs.reject! { |reflection| reflection.foreign_key.to_s != "#{reflection.name}_id" }
  refs.each do |ref|
    r = { name: ref.name }
    r.merge! polymorphic: true if ref.polymorphic?
    r.merge! reference_options: r.slice(:polymorphic).inject('') { |s, h| s << ", #{h[0]}: #{h[1].inspect}" }
    results[ref.foreign_key] = r unless results.key?(ref.foreign_key.to_sym)
  end

  results
end

#subclasses_tree(tree = {}, node = self) ⇒ Object 



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# File 'lib/rails_extend/active_record/extend.rb', line 8

def subclasses_tree(tree = {}, node = self)
  tree[node] ||= {}

  node.subclasses.each do |subclass|
    tree[node].merge! subclasses_tree(tree[node], subclass)
  end

  tree
end

#to_fixture ⇒ Object 



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# File 'lib/rails_extend/active_record/extend.rb', line 18

def to_fixture
  require 'rails/generators/test_unit/model/model_generator'

  args = [
    self.name.underscore
  ]
  cols = columns.reject(&->(i){ attributes_by_default.include?(i.name) }).map { |col| "#{col.name}:#{col.type}" }

  generator = TestUnit::Generators::ModelGenerator.new(args + cols, destination_root: Rails.root, fixture: true)
  generator.instance_variable_set :@source_paths, Array(RailsExtend::Engine.root.join('lib/templates', 'test_unit/model'))
  generator.invoke_all
end