Class: Databasium::Model

Inherits:
Object
  • Object
show all
Defined in:
app/services/databasium/model.rb

Defined Under Namespace

Classes: ModelData

Constant Summary collapse

PATHS = 
[ "models" ].freeze
RELATIONS = 
%w[belongs_to has_many has_one has_and_belongs_to_many].freeze
RELATIONS_REGEX = 
/\A(#{Regexp.union(RELATIONS).source})/

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Model

Returns a new instance of Model.



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# File 'app/services/databasium/model.rb', line 7

def initialize
end

Instance Attribute Details

#attributes ⇒ Object (readonly)

Returns the value of attribute attributes.



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# File 'app/services/databasium/model.rb', line 2

def attributes
  @attributes
end

#model_name ⇒ Object (readonly)

Returns the value of attribute model_name.



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# File 'app/services/databasium/model.rb', line 2

def model_name
  @model_name
end

#relations ⇒ Object (readonly)

Returns the value of attribute relations.



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# File 'app/services/databasium/model.rb', line 2

def relations
  @relations
end

Instance Method Details

#create_model_data(model_name:, attributes:, relations:, unknown:) ⇒ Object 



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# File 'app/services/databasium/model.rb', line 84

def create_model_data(model_name:, attributes:, relations:, unknown:)
  ModelData.new(
    model_name: model_name,
    attributes: attributes,
    relations: relations,
    unknown: unknown
  )
end

#get_all_models_from_db(search: nil) ⇒ Object

might be worth switching to reading from the dir directly in future def get_all_models_from_dir(search: nil)

model_files = []
PATHS.each { |path| model_files += Dir.glob(Rails.root.join("app", path, "**/*.rb")) }
model_names =
  model_files
    .map { |file| File.basename(file).sub(/\.rb$/, "").classify }
    .reject do |name|
      %w[ApplicationRecord Concerns].include?(name) || !name.safe_constantize&.table_exists?
    end
model_names = model_names.select { |name| name =~ /#{search}/i } if search
model_names

end



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# File 'app/services/databasium/model.rb', line 24

def get_all_models_from_db(search: nil)
  conn = ActiveRecord::Base.connection
  tables = conn.tables - %w[ar_internal_metadata schema_migrations]
  tables = tables.map { |t| t.classify }
  tables = tables.select { |t| t =~ /#{search}/i } if search
  tables
end

#get_model_data_from_file(model_name) ⇒ Object 



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# File 'app/services/databasium/model.rb', line 36

def get_model_data_from_file(model_name)
  raw_model = constantize_model(model_name)
  model = { validations: [], columns: [], unknown: [], relations: [], columns_hash: {} }
  raw_model.columns.each do |column|
    model[:columns_hash][column.name] = { type: column.type, validations: [] }
  end

  index = 0
  inside_class = false
  File.foreach(model_file_path(model_name)) do |line|
    raw_line = line
    line = line.strip.lstrip

    parsed_line = {}

    if line.start_with?("#")
      parsed_line = parse_column(line)
    elsif line.start_with?("validates :")
      parsed_line = parse_validation(line)
      scan_name = parsed_line[:content][:name]
      model_column = model[:columns_hash].fetch(scan_name, nil)
      if model_column.present?
        model_column[:validations] << {
          type: parsed_line[:content][:type],
          value: parsed_line[:content][:value]
        }
      end
    elsif line.match?(RELATIONS_REGEX)
      parsed_line = parse_relation(line)
    else
      if !raw_line.include?("class")
        parsed_line = { type: :unknown, content: {} }
      else
        inside_class = true
      end
    end

    if parsed_line.present? && !(raw_line.blank? && !inside_class)
      parsed_line[:content].merge!(
        { index: index, line: parsed_line[:type] == :unknown ? raw_line : line }
      )
      model[parsed_line[:type]] << parsed_line[:content]
    end
    index += 1
  end
  model
end

#read_model_file(model_name) ⇒ Object 



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# File 'app/services/databasium/model.rb', line 32

def read_model_file(model_name)
  File.read(model_file_path(model_name))
end