activemodel Examples and Free Source Code

Should I validate the type column? (Rails, STI)...

ruby-on-rails ruby-on-rails-5 activemodel single-table-inheritance sti

ruby-on-rails activerecord activemodel

Using `assign_attributes` saves `has_many through:` association immediately...

ruby-on-rails activerecord ruby-on-rails-5 activemodel

How to prevent password from being updated if empty in Rails Model and test it with RSpec?...

ruby-on-rails ruby testing rspec activemodel

" 'nil' is not an ActiveModel-compatible object. It must implement :to_partial_path &qu...

ruby-on-rails activemodel

Postgresql JSONB nested form ruby on rails...

ruby-on-rails activemodel nested-form-for

Validate existing records with overlap item ranges taking nil as infinite...

ruby-on-rails ruby rails-activerecord activemodel

How to remove errors in after_validation in Rails...

ruby-on-rails ruby activerecord activemodel

FactoryGirl - override association with trait?...

ruby-on-rails factory-bot activemodel

Trying to add multiple entry to a particar database active records on rails with a single post reque...

arrays ruby-on-rails activerecord activemodel

LoadError Unable to autoload constant Message...

ruby-on-rails activemodel rails-models mailboxer

using the same validator for different attributes Rails...

ruby-on-rails activerecord activemodel

Checking if attribute_changed? in ActiveModel::EachValidator...

ruby-on-rails validation activemodel

Mix create and update validations in single custom validator using ActiveModel::Validator...

ruby-on-rails validation activemodel

How to test a custom validator?...

ruby-on-rails testing rspec validation activemodel

Copying / Cloning an ActiveStorage attribute...

ruby-on-rails ruby rails-activestorage activemodel

Rails 5 throw abort : how do I setup error messages?...

activemodel ruby-on-rails-5

Controlling the order of rails validations...

ruby-on-rails ruby-on-rails-3 validation activemodel

How to implement multiple different serializers for same model using ActiveModel::Serializers?...

ruby-on-rails-3 json rest activemodel

Rails create single record VS create multiple records PERFOMANCE difference...

ruby-on-rails postgresql performance activemodel

Mongoid skip validation or set default value for document with nil embeds_many...

ruby mongodb mongoid activemodel

Why is numericality validator not working with Active Model Attributes?...

ruby-on-rails ruby validation activemodel ruby-on-rails-7

Using form_with with an ActiveModel object?...

ruby-on-rails ruby activerecord ruby-on-rails-6 activemodel

How to handle multiple belongs_to relations to the same model?...

ruby-on-rails ruby activemodel ruby-on-rails-7

Rails custom model method in where query...

ruby-on-rails activerecord activemodel

ActiveModel - `undefined method `write_from_user' for nil:NilClass`...

ruby-on-rails ruby activemodel

In Rails 4, how do I reference an enum value when initializing my model?...

ruby-on-rails ruby-on-rails-4 enums activemodel

get validations from model...

ruby-on-rails validation activemodel

Active Record: NameError (undefined local variable or method `attributes' for nil:NilClass Did y...

activemodel ruby-on-rails-7

How to determine if a record is just created or updated in after_save...

ruby-on-rails activerecord activemodel