Rails Generate Model Primary Key
Using Rails, how can I set my primary key to not be an integer-typed column? Is there some other way to have rails generate the PRIMARYKEY. Your ActiveRecord. Nov 26, 2019 UUID is an alternative primary key type for SQL databases. It offers some non-obvious advantages compared to standard integer-based keys. Rails 6 release fresh out of beta introduces a new feature in ActiveRecord that makes working with UUID primary keys more straightforward. In this tutorial, we will dive deep into UUIDs with all their cons and pros. May 31, 2013 Featured » Blog » Rails Associations With Multiple Foreign Keys × Share this Article. You can specify a single foreignkey and a single primarykey, but nothing really for multiple keys. Here the proc is called on our instance of the primary model, so we can just reference the otherprimarycolumn and the value of the current instance.
By default, createtable will create a primary key called id. You can change the name of the primary key with the:primarykey option (don’t forget to update the corresponding model) or, if you don’t want a primary key at all (for example for a HABTM join table), you can pass the option:id = false. Rails is all about Convention over Configuration, this includes the DB primary key, which is always set to be id column. What if you want to use different column as your primary key? Crysis 2 cd key generator free download. Read on and I’ll show you how. NOTE: This article is written for Rails 4.1.1 /w Postgres. Feb 24, 2020 Please refer to the Rails Command Line Docs for more information. Command Line Generator Info Reference. You can get all of this information on the command line. Rails generate with no generator name will output a list of all available generators and some information about global options.
Join GitHub today
GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together.
Sign upBranch:master
Rails Generate Model Primary Key 2017
| # frozen_string_literal: true |
| require'rails/generators/active_record' |
| moduleActiveRecord |
| moduleGenerators# :nodoc: |
| classModelGenerator < Base# :nodoc: |
| argument:attributes,type: :array,default: [],banner: 'field[:type][:index] field[:type][:index]' |
| check_class_collision |
| class_option:migration,type: :boolean |
| class_option:timestamps,type: :boolean |
| class_option:parent,type: :string,desc: 'The parent class for the generated model' |
| class_option:indexes,type: :boolean,default: true,desc: 'Add indexes for references and belongs_to columns' |
| class_option:primary_key_type,type: :string,desc: 'The type for primary key' |
| class_option:database,type: :string,aliases: %i(--db),desc: 'The database for your model's migration. By default, the current environment's primary database is used.' |
| # creates the migration file for the model. |
| defcreate_migration_file |
| returnunlessoptions[:migration] && options[:parent].nil? |
| attributes.each{aa.attr_options.delete(:index)ifa.reference? && !a.has_index?}ifoptions[:indexes]false |
| migration_template'././migration/templates/create_table_migration.rb',File.join(db_migrate_path,'create_#{table_name}.rb') |
| end |
| defcreate_model_file |
| template'model.rb',File.join('app/models',class_path,'#{file_name}.rb') |
| end |
| defcreate_module_file |
| returnifregular_class_path.empty? |
| template'module.rb',File.join('app/models','#{class_path.join('/')}.rb')ifbehavior:invoke |
| end |
| hook_for:test_framework |
| private |
| defattributes_with_index |
| attributes.select{a !a.reference? && a.has_index?} |
| end |
| # Used by the migration template to determine the parent name of the model |
| defparent_class_name |
| options[:parent]'ApplicationRecord' |
| end |
| end |
| end |
| end |
Rails Generate Model Primary Key Definition
Copy lines Copy permalink