Module: RailsConditionalParams::Patch

Defined in:
lib/rails_conditional_params/patch.rb

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.included(other) ⇒ Object 



34
35
36
 
# File 'lib/rails_conditional_params/patch.rb', line 34

def Patch.included(other)
  other.alias_method_chain :permit, :conditional_params
end

Instance Method Details

#permit_with_conditional_params(*filters) ⇒ Object

Adds support for conditional params:

params.permit(yes: true, no: false)
# => { "yes" => "..." }

This is useful for parameters that should be permitted in some cases, but not others:

params.permit(:title, :body, published: admin?)
# Result only includes published if admin? is true.



13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
 
# File 'lib/rails_conditional_params/patch.rb', line 13

def permit_with_conditional_params(*filters)
  filters.each do |filter|
    if filter.is_a? Hash
      filter.delete_if do |key, value|
        case value
        when TrueClass
          filters << key
          true
        when FalseClass, NilClass
          # do nothing
          true
        else
          false
        end
      end
    end
  end

  permit_without_conditional_params(*filters)
end