Top "Rails-activerecord" questions

has_many, belongs_to relation in active record migration rails 4

I have a User model and a Task model. I have not mentioned any relation between them while creating them. …

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

I have an ActiveRecord model that has a date attribute. Is it possible to utilize that date attribute to find …

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Changing a column type to longer strings in rails

At the first migration, I declared on a column content to be string Activerecord made it to be string(255) according …

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Rails has_one :through association

Rails has a has_one :through association that helps set up a one-to-one association with a third model by going …

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Ruby-on-Rails: Selecting distinct values from the model

The docs: http://guides.rubyonrails.org/active_record_querying.html#selecting-specific-fields Clearly state that: query = Client.select(:name).distinct # => …

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Connecting Rails 3.1 with Multiple Databases

At ShowNearby we have been doing a very big migration to RoR 3.1 from PHP and we are facing several problems …

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How can I overwrite a getter method in an ActiveRecord model?

I'm trying to overwrite a getter method for an ActiveRecord model. I have an attribute called name in the model …

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Rails: Validate only on create, or on update when field is not blank

How can I restrict a Rails validation to check only on create OR when the field isn't blank? I'm creating …

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Rails 5: ActiveRecord OR query

How do you do an or query in Rails 5 ActiveRecord? Also, is it possible to chain or with where in …

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How to save a model without running callbacks in Rails

I need to calculate values when saving a model in Rails. So I call calculate_averages as a callback for …

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