rails-activerecord Examples and Free Source Code

Undefined method update_attributes in Rails...

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"This connection is in use by Fiber" error after upgrade to rails 7.2 and ruby 3.2.2...

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Combine two ActiveRecord::Relation objects...

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Validate uniqueness of multiple columns...

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What do I pass to schema_migration in ActiveRecord::MigrationContext#new...

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Use Rails' select() to add (not overwrite) selected attributes?...

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How to change default timezone for Active Record in Rails?...

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Possible to remove method in ActiveRecord?...

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How can I avoid running ActiveRecord callbacks?...

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Is it possible to add errors to an ActiveRecord object without associating them with a particular at...

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Upsert_all with uniqueness index constraint...

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What is the difference between pluck and collect in Rails?...

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List all associations of a model...

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ActiveRecord OR query...

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Rails ActiveModel get sum of calculated column...

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Changing table name at query run time in a Rails application...

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ActiveRecord validation for nil...

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Saving an associated polymorphic object duplicates it...

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ActiveRecord delete_all method updating instead of deleting...

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Ruby on Rails: getting the max value from a DB column...

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How to set timezone for ActiveRecord queries to fetch the accurate figures?...

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How to preload associations of STI models in Rails 7?...

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When is a pessimistic lock released in ActiveRecord?...

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How do I eager load multiple associations in same query with ActiveRecord?...

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Rails :include vs. :joins...

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Query on a time range ignoring the date of timestamps...

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Do I need to use Class.scope_name when using scope in the same model, or can I just use scope_name?...

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Rails: How can I set default values in ActiveRecord?...

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How to write Rails scope for this SQL query...

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Using Common Table Expression (CTE) with Rails ActiveRecord...

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