Class: Formtastic::Inputs::NumberInput

Inherits:
Object
  • Object
show all
Includes:
Base, Base::Numeric, Base::Placeholder
Defined in:
lib/formtastic/inputs/number_input.rb

Overview

Outputs a simple <label> with a HTML5 <input type="number"> wrapped in the standard <li> wrapper. This is the default input choice for all database columns of the type :float and :decimal, as well as :integer columns that aren't used for belongs_to associations, but can be applied to any text-like input with :as => :number.

Sensible default values for the min, max and step attributes are found by reflecting on the model's validations (when provided). An IndeterminableMinimumAttributeError exception will be raised when the following conditions are all true:

  • you haven't specified a :min or :max for the input
  • the model's database column type is a :float or :decimal
  • the validation uses :less_than or :greater_than

The solution is to either:

  • manually specify the :min or :max for the input
  • change the database column type to an :integer (if appropriate)
  • change the validations to use :less_than_or_equal_to or :greater_than_or_equal_to

Examples:

Full form context and output


<%= semantic_form_for(@user) do |f| %>
  <%= f.inputs do %>
    <%= f.input :shoe_size, :as => :number %>
  <% end %>
<% end %>

<form...>
  <fieldset>
    <ol>
      <li class="numeric">
        <label for="user_shoe_size">Shoe size</label>
        <input type="number" id="user_shoe_size" name="user[shoe_size]">
      </li>
    </ol>
  </fieldset>
</form>

Default HTML5 min/max/step attributes are detected from the numericality validations


class Person < ActiveRecord::Base
  validates_numericality_of :age, 
    :less_than_or_equal_to => 100, 
    :greater_than_or_equal_to => 18, 
    :only_integer => true
end

<%= f.input :age, :as => :number %>

<li class="numeric">
  <label for="persom_age">Age</label>
  <input type="number" id="person_age" name="person[age]" min="18" max="100" step="1">
</li>

Pass attributes down to the <input> tag with :input_html

<%= f.input :shoe_size, :as => :number, :input_html => { :min => 3, :max => 15, :step => 1, :class => "special" } %>

Min/max/step also work as options

<%= f.input :shoe_size, :as => :number, :min => 3, :max => 15, :step => 1, :input_html => { :class => "special" } %>

Use :in with a Range as a shortcut for :min/:max

<%= f.input :shoe_size, :as => :number, :in => 3..15, :step => 1 %>
<%= f.input :shoe_size, :as => :number, :input_html => { :in => 3..15, :step => 1 } %>

See Also:

Instance Attribute Summary

Attributes included from Base

#builder, #method, #object, #object_name, #options, #template

Instance Method Summary (collapse)

Methods included from Base::Placeholder

#input_html_options, #placeholder_text

Methods included from Base::Numeric

#in_option, #input_html_options, #max_option, #min_option, #wrapper_html_options

Methods included from Base

#initialize, #removed_option!, #warn_and_correct_option!, #warn_deprecated_option!

Methods included from Base::Wrapping

#input_wrapping, #wrapper_classes, #wrapper_classes_raw, #wrapper_dom_id, #wrapper_html_options, #wrapper_html_options_raw

Methods included from Base::Labelling

#label_from_options, #label_html, #label_html_options, #label_text, #localized_label, #render_label?, #requirement_text, #requirement_text_or_proc

Methods included from LocalizedString

#model_name

Methods included from Base::Associations

#association, #association_primary_key, #belongs_to?, #has_many?, #reflection

Methods included from Base::Fileish

#file?

Methods included from Base::Validations

#autofocus?, #column_limit, #limit, #not_required_through_negated_validation!, #not_required_through_negated_validation?, #optional?, #required?, #required_attribute?, #responds_to_global_required?, #validation_integer_only?, #validation_limit, #validation_max, #validation_min, #validation_step, #validations, #validations?, #validator_relevant?

Methods included from Base::Naming

#as, #attributized_method_name, #humanized_method_name, #input_name, #sanitized_method_name, #sanitized_object_name

Methods included from Base::Hints

#hint?, #hint_html, #hint_text, #hint_text_from_options

Methods included from Base::Errors

#error_first_html, #error_html, #error_keys, #error_list_html, #error_none_html, #error_sentence_html, #errors, #errors?

Methods included from Base::Database

#column, #column?

Methods included from Base::Options

#formtastic_options, #input_options

Methods included from Base::Html

#dom_id, #dom_index, #input_html_options

Instance Method Details

- (Object) step_option



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# File 'lib/formtastic/inputs/number_input.rb', line 82

def step_option
  super || "any"
end

- (Object) to_html



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# File 'lib/formtastic/inputs/number_input.rb', line 75

def to_html
  input_wrapping do
    label_html <<
    builder.number_field(method, input_html_options)
  end
end