Virtus::Multiparams
Support for Rails-style multiparameters, which makes datetime_select and
friends
work with Virtus objects.
Rails Date, Time and DateTime selectors all use multiparameters. This means they break one attribute into separate parameters for each input, like year, month and day, and reconstitute these multiple parameters into a single parameter to be passed back into a model as an attribute.
Usage
class PostForm
include Virtus
include Virtus::Multiparams
attribute :title, String
attribute :publish_at, DateTime
end
# app/views/posts/new.html.erb
<%= form_for @post_form do |form| %>
<%= form.label :title %>
<%= form.text_field :title %>
<%= form.label :publish_at %>
<%= form.datetime_select :publish_at %>
<!-- Which does something like:
<select name="post_form[publish_at(i1)]"><option>2015</option>...</select>
<select name="post_form[publish_at(i2)]"><option value="1">January</option>...<option value="12">December</option></select>
<select name="post_form[publish_at(i3)]"><option>1</option>...</select>
<select name="post_form[publish_at(i4)]"><option>1</option>...<option>24</option></select>
<select name="post_form[publish_at(i5)]"><option>1</option>...<option>60</option></select>
<select name="post_form[publish_at(i6)]"><option>1</option>...<option>60</option></select>
-->
<%= form.submit %>
<% end %>
# app/controllers/posts_controller.rb
class PostsController
def new
@post_form = PostForm.new
end
def create
@post_form = PostForm.new(params[:post_form])
# ...
end
end