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clauses with sql string in scopes

March 1, 2013

When writing clauses that include sql strings within scopes, it is a good practice to include table names.


scope :published, where(‘published_at IS NOT NULL’);

scope :published, where(‘resources.published_at IS NOT NULL’)

scope :published, where(:published => true)


This is because since scopes can be chained, and merged, there can come a time when sql gives an error for not being sure about which table.

When using the hash, rails does it automatically and so it is not required.

Got this tip from the amazing ryan bates


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