Safe ActiveRecord like query

Question

I\'m trying to write LIKE query.

I read that pure string quires aren\'t safe, however I couldn\'t find any documentation that explain how to write safe LIKE Hash Que

Answer 1

In case if anyone performing search query on nested association try this:

Model.joins(:association).where(
   Association.arel_table[:attr1].matches("%#{query}%")
)

For multiple attributes try this:

Model.joins(:association).where(
  AssociatedModelName.arel_table[:attr1].matches("%#{query}%")
    .or(AssociatedModelName.arel_table[:attr2].matches("%#{query}%"))
    .or(AssociatedModelName.arel_table[:attr3].matches("%#{query}%"))
)
 

Don't forget to replace AssociatedModelName with your model name