In Ruby 5.2, we get a warning when using the "RANDOM()" function: DEPRECATION WARNING: Dangerous query method (method whose arguments are used as raw SQL) called with non-attribute argument(s): "RANDOM()". Non-attribute arguments will be disallowed in Rails 6.0. This method should not be called with user-provided values, such as request parameters or model attributes. Known-safe values can be passed by wrapping them in Arel.sql(). This warning doesn't make much sense, though, since RANDOM() is a common function which is not dangerous at all. However, since the warning is annoying, we'll probably have to find a way to deal with it. So I'm extracting all our RANDOM() usages into a method. This way we'll only have to change one method to avoid this warning. I've chosen `sample` because it's similar to Ruby's Array#sample, and because `order_by_random` would be confusing if we consider we already have a method called `sort_by_random`.
12 lines
220 B
Ruby
12 lines
220 B
Ruby
class ApplicationRecord < ActiveRecord::Base
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self.abstract_class = true
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def self.sample(count = 1)
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if count == 1
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reorder("RANDOM()").first
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else
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reorder("RANDOM()").limit(count)
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end
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end
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end
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