All Activerecord Solutions on Gang of Coders

Total of 179 Activerecord Solutions

How to use ActiveRecord in a ruby script outside Rails?

Ruby on-Rails Ruby Activerecord Scripting

ActiveRecord serialize using JSON instead of YAML

Ruby on-Rails Json Activerecord Yaml Serialization

Create seed file from data already in the database

Ruby on-Rails Activerecord Ruby on-Rails-3 Rake

Rails: Force empty string to NULL in the database

Mysql Ruby on-Rails Activerecord Ruby on-Rails-3.1

How to specify conditions on joined tables in rails

Sql Ruby on-Rails Activerecord

Rails: uniq vs. distinct

Ruby on-Rails Activerecord

rails override default getter for a relationship (belongs_to)

Ruby on-Rails Activerecord Associations Default Value

How to get activerecord associations via reflection

Ruby Reflection Activerecord

How to update all when you need callbacks fired?

Ruby on-Rails Ruby on-Rails-3 Activerecord Callback Update All

Model.reset_column_information does not reload columns in rails migration

Ruby on-Rails Activerecord Migration Rake Ruby on-Rails-3.2

Create an ActiveRecord database table with no :id column?

Mysql Ruby on-Rails Ruby Security Activerecord

dependent => destroy on a "has_many through" association

Ruby on-Rails Activerecord Has Many-Through

How do I get ActiveRecord to show the next id (last + 1) in Ruby on Rails?

Ruby on-Rails Activerecord

Rails belongs_to many models

Ruby on-Rails Activerecord Belongs To

ActiveRecord Rails 3 scope vs class method

Ruby on-Rails-3 Activerecord Class Method Scopes

Log the actual SQL query using ActiveRecord with Yii2?

Php Sql Activerecord Logging Yii2

Multiple databases in Rails

Ruby on-Rails Database Activerecord

Rails Object Relationships and JSON Rendering

Ruby on-Rails Ruby Json Activerecord

What's the difference between “includes” and “preload” in an ActiveRecord query?

Ruby on-Rails Ruby Activerecord

Rails 4: find all records

Activerecord Ruby on-Rails-4

Yii2 How to perform where AND or OR condition grouping?

Php Mysql Activerecord Yii Yii2

ActiveRecord - querying polymorphic associations

Ruby on-Rails Ruby Activerecord Polymorphic Associations

Rails ActiveRecord: How do I know if find_or_create_by found or created?

Ruby on-Rails Activerecord

can you use activerecord to find substring of a field? (quick & dirty keyword finder)

Ruby on-Rails Activerecord

Why isn't self always needed in ruby / rails / activerecord?

Ruby Ruby on-Rails-3 Activerecord Self

Rails: has_many through with polymorphic association - will this work?

Ruby on-Rails Activerecord Has Many-Through Polymorphic Associations

Rails - Delete all Records that Meet a Condition

Sql Ruby on-Rails Activerecord

pluralize without count number in rails 4

Ruby on-Rails Ruby on-Rails-4 Activerecord Pluralize

Rails: correct way of turning activerecord relation to array?

Ruby on-Rails Ruby Activerecord

How to return an empty ActiveRecord relation?

Ruby on-Rails Activerecord Relation

Rails: select unique values from a column

Ruby on-Rails Activerecord

Do rails rake tasks provide access to ActiveRecord models?

Ruby on-Rails Activerecord Rake Task

Determine if ActiveRecord Object is New

Ruby on-Rails Activerecord

Case-insensitive search in Rails model

Ruby on-Rails Activerecord Case Insensitive

Is there a way to get a collection of all the Models in your Rails app?

Ruby on-Rails Activerecord Collections Model

delete_all vs destroy_all?

Ruby on-Rails Ruby Database Activerecord

What is causing this ActiveRecord::ReadOnlyRecord error?

Ruby on-Rails Ruby Activerecord Join Associations

Rails find_or_create_by more than one attribute?

Ruby on-Rails Activerecord Model Many to-Many Dynamic Attributes

Rails: How do I create a default value for attributes in Rails activerecord's model?

Ruby on-Rails Activerecord

Validate uniqueness of multiple columns

Ruby on-Rails Ruby on-Rails-3 Validation Activerecord Rails Activerecord

Rails: Using greater than/less than with a where statement

Ruby on-Rails Activerecord Rails Activerecord

How to get last N records with activerecord?

Ruby on-Rails Ruby Activerecord

How do you manually execute SQL commands in Ruby On Rails using NuoDB

Sql Ruby on-Rails-3 Activerecord Nuodb

What's the difference between belongs_to and has_one?

Ruby on-Rails Activerecord

Rails: validate uniqueness of two columns (together)

Ruby on-Rails Ruby on-Rails-3 Ruby on-Rails-4 Activerecord Rails Activerecord

What does inverse_of do? What SQL does it generate?

Ruby on-Rails Activerecord

How do you discover model attributes in Rails?

Ruby on-Rails Activerecord

belongs_to through associations

Ruby on-Rails Ruby on-Rails-3 Activerecord

Rails 3 migrations: Adding reference column?

Ruby on-Rails Activerecord Migration

Can you get DB username, pw, database name in Rails?

Ruby on-Rails Ruby Database Activerecord Environment

How to chain scope queries with OR instead of AND?

Ruby on-Rails Ruby on-Rails-3 Activerecord Rails Activerecord

Override ActiveRecord attribute methods

Ruby on-Rails Oop Activerecord

How to select where ID in Array Rails ActiveRecord without exception

Ruby on-Rails Activerecord Find

How to drop columns using Rails migration

Ruby on-Rails Ruby Database Activerecord Rails Migrations

Count, size, length...too many choices in Ruby?

Ruby Activerecord Size Content Length

How to show SQL queries run in the Rails console?

Ruby on-Rails Activerecord

Specifying column name in a "references" migration

Ruby on-Rails Ruby on-Rails-3 Activerecord Rails Migrations

When to use a "has_many :through" relation in Rails?

Ruby on-Rails Ruby on-Rails-3 Activerecord

Ruby on Rails. How do I use the Active Record .build method in a :belongs to relationship?

Ruby on-Rails Activerecord Foreign Keys

Using Rails serialize to save hash to database

Ruby on-Rails Ruby Serialization Activerecord

When to add what indexes in a table in Rails

Mysql Ruby on-Rails Activerecord

How to convert ActiveRecord results into an array of hashes

Arrays Activerecord Hash

Rails 3: Get Random Record

Ruby on-Rails Ruby Ruby on-Rails-3 Activerecord Random

Rails 4 LIKE query - ActiveRecord adds quotes

Sql Ruby on-Rails Ruby Postgresql Activerecord

How to list of all the tables defined for the database when using active record?

How can I see the SQL that will be generated by a given ActiveRecord query in Ruby on Rails

Sql Ruby on-Rails Activerecord

Rails: Why does find(id) raise an exception in rails?

Ruby on-Rails Activerecord

ActiveRecord: List columns in table from console

Sql Ruby on-Rails Ruby on-Rails-3 Activerecord

Can you do greater than comparison on a date in a Rails 3 search?

Ruby on-Rails Activerecord Ruby on-Rails-3

How to do a LIKE query in Arel and Rails?

Ruby on-Rails Activerecord Arel

Eager load polymorphic

Ruby on-Rails Ruby on-Rails-3 Activerecord

Find all records which have a count of an association greater than zero

Sql Ruby on-Rails Ruby on-Rails-3 Activerecord

Find rows with multiple duplicate fields with Active Record, Rails & Postgres

Ruby on-Rails Postgresql Activerecord

ActiveRecord, has_many :through, and Polymorphic Associations

Ruby on-Rails Activerecord Polymorphic Associations

Converting an array of objects to ActiveRecord::Relation

Ruby on-Rails Ruby Activerecord

find() with nil when there are no records

Ruby on-Rails Ruby Ruby on-Rails-3 Activerecord

Rails 5: ActiveRecord OR query

Ruby on-Rails Ruby Activerecord Ruby on-Rails-5 Rails Activerecord

Using helpers in model: how do I include helper dependencies?

Ruby on-Rails Ruby Activerecord Model

How to implement a unique index on two columns in rails

Ruby on-Rails Activerecord

How to execute a raw update sql with dynamic binding in rails

Ruby on-Rails Activerecord Rawsql

Rails - Validate Presence Of Association?

Ruby on-Rails Ruby on-Rails-3 Validation Activerecord

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

Ruby on-Rails Activerecord Activemodel

Rails create or update magic?

Ruby on-Rails Activerecord

Overriding id on create in ActiveRecord

Ruby on-Rails Activerecord

ActiveRecord.find(array_of_ids), preserving order

Ruby on-Rails Ruby Activerecord

How does Rails keep track of which migrations have run for a database?

Ruby on-Rails Activerecord

Saving multiple objects in a single call in rails

Ruby on-Rails Activerecord Data Access

In rails, how can I find out what caused a .save() to fail, other than validation errors?

Ruby on-Rails Activerecord

Rails filtering array of objects by attribute value

Ruby on-Rails Activerecord

Why all the Active Record hate?

Ruby on-Rails Design Patterns Oop Activerecord

How do I turn on SQL debug logging for ActiveRecord in RSpec tests?

Ruby on-Rails Ruby Activerecord Rspec Rails

how to add records to has_many :through association in rails

Ruby on-Rails Activerecord Has Many-Through

Rails find record with zero has_many records associated

Sql Ruby on-Rails Activerecord Has Many

ActiveRecord Query Union

Ruby on-Rails Activerecord Union Active Relation

Safe ActiveRecord like query

Ruby Activerecord Ruby on-Rails-4

How to get the original value of an attribute in Rails

Ruby on-Rails Activerecord

Check if record exists from controller in Rails

Ruby on-Rails Ruby on-Rails-3 Activerecord Exists

Rails: Order with nulls last

Ruby on-Rails Ruby on-Rails-3 Sorting Activerecord Null

validation custom message for rails 3

Ruby on-Rails Ruby Ruby on-Rails-3 Validation Activerecord

How to implement has_many :through relationships with Mongoid and mongodb?

Ruby on-Rails Activerecord Mongodb Data Modeling Mongoid

Active Record - Find records which were created_at before today

Ruby Activerecord

Deprecation warning when using has_many :through :uniq in Rails 4

Ruby on-Rails Activerecord Rails Activerecord Ruby on-Rails-4

Get only records created today in laravel

Mysql Date Activerecord Where Laravel 5.1

Check if record was just destroyed in rails

Ruby on-Rails Ruby Activerecord

Use a scope by default on a Rails has_many relationship

Ruby on-Rails-3 Activerecord Has Many

Using ActiveRecord, is there a way to get the old values of a record during after_update

Ruby on-Rails Activerecord Model Callback

What exactly is Arel in Rails 3.0?

Ruby on-Rails Ruby Activerecord Arel

LEFT OUTER joins in Rails 3

Ruby on-Rails Ruby Activerecord

Update one column to value of another in Rails migration

Ruby on-Rails Activerecord Migration Timestamp

Best practice about empty belongs_to association

Ruby on-Rails Ruby Activerecord

Regular expressions with validations in RoR 4

Ruby on-Rails Ruby Activerecord

"Order by" result of "group by" count?

Ruby on-Rails Ruby on-Rails-3 Activerecord Sql Order-By

Rails: what does schema.rb do?

Ruby on-Rails Activerecord

How do I replace accented Latin characters in Ruby?

Ruby on-Rails Ruby Activerecord Unicode Utf 8

Correct datatype for latitude and longitude? (in activerecord)

Ruby on-Rails Activerecord Types

Rails - Best-Practice: How to create dependent has_one relations

Ruby on-Rails Ruby Activerecord Ruby on-Rails-3 Associations

Remove duplicate records based on multiple columns?

Ruby on-Rails-3 Activerecord Duplicates Destroy

ActiveRecord: How to get all attributes of a model that can be mass-assigned?

Ruby on-Rails Activerecord

ActiveRecord::StatementInvalid: PG InFailedSqlTransaction

Ruby on-Rails Postgresql Activerecord Rollback Pg

Ruby Activerecord IN clause

Ruby Activerecord

How does Rails ActiveRecord chain "where" clauses without multiple queries?

Ruby on-Rails Activerecord

Difference between after_create, after_save and after_commit in rails callbacks

Ruby on-Rails Ruby Activerecord Callback

How to select rows where column value IS NOT NULL using CodeIgniter's ActiveRecord?

Php Mysql Codeigniter Activerecord Null

With Rails 4, Model.scoped is deprecated but Model.all can't replace it

Activerecord Ruby on-Rails-4

In Rails, what's the difference between find_each and where?

Ruby on-Rails Ruby Ruby on-Rails-3 Ruby on-Rails-4 Activerecord

Rails Active Record find(:all, :order => ) issue

Ruby on-Rails Ruby Activerecord

Sort array returned by ActiveRecord by date (or any other column)

Ruby on-Rails Ruby Arrays Activerecord

Rails ActiveRecord :joins with LEFT JOIN instead of INNER JOIN

Ruby on-Rails Activerecord Join Left Join Inner Join

Alias for column names in Rails

Ruby on-Rails Database Ruby on-Rails-3 Activerecord

Rails 3 + activerecord, the best way to "mass update" a single field for all the records that meet a condition

Ruby on-Rails Activerecord

Remove order from ActiveRecord scope

Ruby on-Rails Activerecord Ransack

ActiveRecord Find By Year, Day or Month on a Date field

Ruby on-Rails Ruby on-Rails-3 Activerecord Rails Activerecord

validates_uniqueness_of passes on nil or blank (without allow_nil and allow_blank)

Ruby on-Rails Activerecord Validates Uniqueness-Of

Getting types of the attributes in an ActiveRecord object

Ruby on-Rails Ruby Activerecord Activemodel

How can I know when to "refresh" my model object in Rails?

Ruby on-Rails Ruby Testing Activerecord

Rails 3 skip validations and callbacks

Ruby on-Rails Ruby on-Rails-3 Activerecord

ActiveRecord OR query Hash notation

Ruby on-Rails Ruby on-Rails-4 Activerecord Rails Activerecord Ruby on-Rails-5

When do I use save!, create! and update_attributes! in Rails?

Ruby on-Rails Activerecord Transactions

Rails 3 / Form without Model: How do I create a form that is not tied to a model?

Ruby on-Rails Ruby on-Rails-3 Activerecord

How to select count with Laravel's fluent query builder?

Mysql Activerecord Fluent Laravel Eloquent

ActiveRecord find_each combined with limit and order

Sql Ruby on-Rails Activerecord

Is there a way to avoid automatically updating Rails timestamp fields?

Ruby on-Rails Ruby Activerecord Timestamp

accepts_nested_attributes_for child association validation failing

Ruby on-Rails Validation Activerecord Nested

Using Active Record generators after Mongoid installation?

Ruby on-Rails Activerecord Mongoid Mongodb

Rails optional belongs_to

Ruby on-Rails Ruby Activerecord

Rails model without database

Ruby on-Rails Ruby Activerecord

How to Determine if Rails Association is Eager Loaded?

Ruby on-Rails Activerecord Eager Loading

Rails: ActiveRecord query based on association value

Ruby on-Rails Ruby Activerecord Associations

Rails ActiveRecord: Find All Users Except Current User

Ruby on-Rails Ruby Activerecord

how to find the cause of ActiveRecord ROLLBACK

Ruby on-Rails Activerecord

has_and_belongs_to_many, avoiding dupes in the join table

Ruby on-Rails Activerecord

"WARNING: Can't mass-assign protected attributes"

Ruby on-Rails Activerecord Devise

Is there an easy way to make a Rails ActiveRecord model read-only?

Ruby on-Rails Ruby on-Rails-3 Activerecord

Does rename_column take care of indexes?

Ruby on-Rails Ruby on-Rails-3 Activerecord Rails Activerecord Database Indexes

How to delete all data from all tables in Rails?

Ruby on-Rails Activerecord

GROUP BY and COUNT using ActiveRecord

Sql Ruby on-Rails Ruby Postgresql Activerecord

How can I count the number of records that have a unique value in a particular field in ROR?

Ruby on-Rails Ruby Activerecord

How can i remove a column from table using rails console

Ruby on-Rails Activerecord Ruby on-Rails-3.2 Rails Migrations

Rails 4 how to ignore pending migrations

Ruby on-Rails Ruby Activerecord

CodeIgniter Active Record - Get number of returned rows

Activerecord Codeigniter

MongoDB vs MySQL

Mysql Activerecord Comparison Mongodb Ruby on-Rails-3

How to add an ORDER BY clause using CodeIgniter's Active Record methods?

Php Codeigniter Select Activerecord Sql Order-By

ActiveRecord Arel OR condition

Sql Ruby on-Rails Ruby Activerecord Arel

Rails ActiveRecord Query for Not Equal

Ruby on-Rails Activerecord

Increment field of mysql database using codeigniter's active record syntax

Mysql Sql Codeigniter Activerecord

Rails order by results count of has_many association

Ruby on-Rails Ruby on-Rails-3 Activerecord

accepts_nested_attributes_for with find_or_create?

Ruby on-Rails Validation Forms Activerecord

How to test for (ActiveRecord) object equality

Ruby on-Rails Ruby Activerecord Identity Equality

Ruby on Rails plural (controller) and singular (model) convention - explanation

Ruby on-Rails Ruby Activerecord

How do I force ActiveRecord to reload a class?

Ruby on-Rails Ruby Activerecord Migration

Elegant way to structure models into subfolders without creating submodules

Ruby on-Rails Activerecord

Rails 3 ActiveRecord: Order by count on association

Mysql Ruby on-Rails Ruby on-Rails-3 Activerecord

How to undefine class in Ruby?

Ruby Ruby on-Rails-3 Activerecord

How to handle Ruby on Rails error: "Please install the postgresql adapter: `gem install activerecord-postgresql-adapter'"

Ruby on-Rails Ruby Postgresql Activerecord Rubygems

How do you scope ActiveRecord associations in Rails 3?

Ruby on-Rails Activerecord Ruby on-Rails-3 Named Scope Arel

Reserved names with ActiveRecord models

Ruby on-Rails Ruby on-Rails-3 Activerecord Ruby on-Rails-3.2 Active Record-Query

ruby super keyword

Ruby on-Rails Ruby Activerecord

What is the order of ActiveRecord callbacks and validations?

Ruby on-Rails Ruby on-Rails-3 Validation Activerecord

How to Create a New Table With a Unique Index in an Active Record / Rails 4 Migration

Ruby on-Rails Activerecord Ruby on-Rails-4