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ruby-on-railsrubyformssimple-form

Rails Simpleform with non-model inputs

I have a normal form using simpleform. Now I'd like to add an input that does not have any corresponding field in the model, it will be processed by the controller. I tried

<%= simple_form_for @obj do |f| %>
  <%= f.input :name %>
  <%= f.input :attr, as: :string %>   <-- should just send "attr" as post data
<% end %>

but this gives a Method not found: attr_not_in_obj error. I could obviously use the standard rails helpers, but then I will miss all of the simpleform HTML around the input, and copying doesn't quite seem right.

In short: I'm looking for something like simpleform version of rails tag helpers, without any connection to a model. How do I add inputs that do not correspond to model attributes?

Solution

  • Why don't you add:

    attr_accessor :attr

    to your model's class definition? This way your code:

    <%= f.input :attr %>

    should work.

    OR

    If this solution isn't suitable, you can always pass some value to your input method directly:

    <%= f.input :attr, input_html: {value: 'something'}  %>