Adding a custom input field in formtastic?
I can't figure out, or find any solutions to a very simple question: "How can I define my own input field in formtastic?"
This is what I got:
<%= semantic_form_for @someFantasticVariable, :url => "/someFantasticUrl.html" do |f|%>
<%= f.inputs do %>
<%= f.input :something_else_id, :required => true , :as => :select, :collection => SomethingElse.find(:all), :label =>"The something else"%>
<%= f.input :fantastic_max_cost, :label => "Budget (max cost)"%>
<%end%>
<%= f.buttons do%>
<%= f.commit_button :button_html => { :class => "primary", :disable_with => 'Processing...', :id => "commitButton"}%>
<%end%>
<%end%>
Now..
I want to have a very simple thing. I want to ad a field that is not part of the model. I want to have a date field that I can use to calculate some stuff in my controller. So I want to do this:
<%= f.inputs do %>
<%= f.input :something_else_id, :required =&g开发者_开发百科t; true , :as => :select, :collection => SomethingElse.find(:all), :label =>"The something else"%>
<%= f.input :fantastic_max_cost, :label => "Budget (max cost)"%>
<%= f.input :start_date, :as => :date , :label => "Start date"%>
<%end%>
But apparetly I'm not allowed, and I can't find any way to do this through my thrusted googling. Any help / ideas?
If you have some attribute that is not part of your model, then a getter and a setter should exist on the model:
def start_date
end
def start_date=(arg)
end
Then you can calculate your staff on a controller or whatever you want:
...
puts params[:somefantasticvariable][:start_date]
...
But this is a quick formtastic hack, you should find some better way, like non-formtastic input with some css etc.
Ruby provides a database-less construct called an attr_accessor
. It is the equivalent of writing setter and getter methods. Formtastic will see this attribute similar to a database-backed attribute.
In your @someFantasticVariable
model:
attr_accessor :start_date
If using attr_accessible in your @someFantasticVariable
model, be sure to add the start_date
variable there too:
attr_accessible :start_date
Because the attribute is type-less, Formtastic cannot derive the HTML input field to use. You will need to manually set the input type using :as
. For your example:
<%= f.input :start_date, :as => :date_select %>
Cite:
- http://apidock.com/ruby/Module/attr_accessor
- https://github.com/justinfrench/formtastic#the-available-inputs
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