### Introduction Working on a report system of files transfert, I had to let the users simply find files by size. I didn't want to have two fields, I prefer a simple text input, with "human syntax". ### Overview To be able to add file size range searching functionality to your advanced search forms (not grid view filters) without having to add public attributes, 'safe' rules, and chunky search conditions for each datfile size attribute.

1. Create an Active Record Behavior that builds the criteria for the search() method and attach it to your model
2. Modify the search() method of the model to merge the behavior's criteria in with the rest of the searchable attributes

### Assumptions