Class: Migsupo::Loader::SchemaRbLoader

Inherits:
Object
  • Object
show all
Defined in:
lib/migsupo/loader/schema_rb_loader.rb

Overview

Loads the current schema state from db/schema.rb without a live DB connection. db/schema.rb uses the same create_table DSL as Schemafile, so we reuse DslContext.

Instance Method Summary collapse

Constructor Details

#initialize(schema_rb_path:, ignored_tables: []) ⇒ SchemaRbLoader

Returns a new instance of SchemaRbLoader.



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# File 'lib/migsupo/loader/schema_rb_loader.rb', line 8

def initialize(schema_rb_path:, ignored_tables: [])
  @schema_rb_path = schema_rb_path
  @ignored_tables = ignored_tables
end

Instance Method Details

#load_schema ⇒ Object 



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# File 'lib/migsupo/loader/schema_rb_loader.rb', line 13

def load_schema
  source  = File.read(@schema_rb_path)
  context = Parser::DslContext.new
  context.instance_eval(source, @schema_rb_path, 1)
  schema  = context.to_schema_definition

  filtered_tables = schema.tables.reject { |name, _| @ignored_tables.include?(name) }
  Schema::SchemaDefinition.new(tables: filtered_tables)
end