It is needed example with checkboxes

[sandiktopas]

Could someone give example with checkboxes?

[jhund]

@sandiktopas it may take me a little bit to update the demo app, but in the meantime here are some pointers that should get you going:

I assume that you want to use a checkbox to filter your records on a boolean attribute. For this example, let's use is_expired. First you need to add the checkbox to your filter UI:

  <%= f.check_box :with_expired_only %> Expired only

Then you need to create a scope:

  scope :with_expired_only, lambda { |flag|
    return nil  if 0 == flag # checkbox unchecked
    where(is_expired: true)
  }

And make sure to add the new scope to your model's filterrific macro.

The detailed documentation is always a great resource to help you solve any remaining issues.

[mark100net]

Suppose you wanted checkboxes but were not filtering on a boolean attribute?

Suppose I had a books index and I wanted to supply a (dynamic) set of checkboxes to filter on authors (one checkbox per author so that I can get all books written by one of the checked authors).

This is somewhat similar to what is mentioned in the docs about using an array of country id's, but there is no view example.

If I have a scope with_author_ids that takes an array of id's as a parameter I can't apply that to each checkbox since it will result in only one value being passed with the form.

I got it to work by doing it without without the form_for's checkbox helper, i.e.:

<% Author.all.each do |a| %>
    <%= check_box_tag("with_author_ids[]", a.id, false, class: 'filterrific-periodically-observed') %><%= a.name %>
<% end %>

And then in the controller:

params[:filterrific][:with_buy_in_level] = params[:with_buy_in_level] unless params[:filterrific].nil?

This seems kind of cumbersome.

I wonder if anyone has a better suggestions but if not I hope at least this helps someone else trying to do this.

[steakchaser]

For Rails 4 how about using the collection_check_boxes helper:

f.collection_check_boxes :with_author_ids, Author.all.map{|a| a.name, a.id}, :last, :first

[steakchaser]

You can also do it this way with the check_box form helper:

<% Author.all.each do |a| %>
  <%= f.check_box(:with_author_ids, {multiple: true}, a.id, false %>
  <%= a.name %>
<% end %>

NOTE: I think you want to stick with using the form builder object f, without this filterrific cannot set defaults or remember choices via the session.

[wtoalabi]

My need is slightly different. How do I make checkbox work with predefined values. For instance, I have a "hobby" field with values like Reading, Travelling, Dancing... I want users to select and filter as many hobbies as possible. How do I present this on the index view? Thanks!