Using helpers in model how do I include helper dependencies

Question

I m writing a model that handles user input from a text area   Following the advice from http   blog caboo se articles 2008 8 25 sanitize-your-users-html-input  I m cleaning up the input in the model before saving to database  using the before validate callback   The relevant parts of my model look like this   include ActionView  Helpers  SanitizeHelper  class Post  lt  ActiveRecord  Base     before validation  clean input           protected    def clean input     self input   sanitize self input   tags   gt   w b i u     end end   Needless to say  this doesn t work   I get the following error when I try and save a new Post   undefined method  white list sanitizer  for   lt Class 0xdeadbeef gt    Apparently  SanitizeHelper creates an instance of HTML  WhiteListSanitizer  but when I mix it into my model it can t find HTML  WhiteListSanitizer   Why   What can I do about this to fix it

User · Answer

To access helpers from your own controllers  just use    OrdersController helpers order number  order

User · Answer

I wouldn t recommend any of these methods  Instead  put it within its own namespace   class Post  lt  ActiveRecord  Base   def clean input     self input   Helpers sanitize self input   tags   gt   w b i u     end    module Helpers     extend ActionView  Helpers  SanitizeHelper   end end

User · Answer

This gives you just the helper method without the side effects of loading every ActionView  Helpers method into your model   ActionController  Base helpers sanitize str

User · Answer

This works better for me    Simple   ApplicationController helpers my helper method   Advance   class HelperProxy  lt  ActionView  Base   include ApplicationController master helper module    def current user      let helpers act like we re a guest     nil   end           def self instance      instance     new   end end   Source  http   makandracards com makandra 1307-how-to-use-helper-methods-inside-a-model

User · Answer

Just change the first line as follows    include ActionView  Helpers   that will make it works   UPDATE  For Rails 3 use    ActionController  Base helpers sanitize str    Credit goes to lornc s answer

User · Answer

I wouldn t recommend any of these methods  Instead  put it within its own namespace   class Post  lt  ActiveRecord  Base   def clean input     self input   Helpers sanitize self input   tags   gt   w b i u     end    module Helpers     extend ActionView  Helpers  SanitizeHelper   end end

User · Answer

If you want to use a the my helper method inside a model  you can write   ApplicationController helpers my helper method

User · Answer

Just change the first line as follows    include ActionView  Helpers   that will make it works   UPDATE  For Rails 3 use    ActionController  Base helpers sanitize str    Credit goes to lornc s answer

User · Answer

If you want to use a the my helper method inside a model  you can write   ApplicationController helpers my helper method

User · Answer

To access helpers from your own controllers  just use    OrdersController helpers order number  order

User · Answer

Just change the first line as follows    include ActionView  Helpers   that will make it works   UPDATE  For Rails 3 use    ActionController  Base helpers sanitize str    Credit goes to lornc s answer

User · Answer

This gives you just the helper method without the side effects of loading every ActionView  Helpers method into your model   ActionController  Base helpers sanitize str

User · Answer

This works better for me    Simple   ApplicationController helpers my helper method   Advance   class HelperProxy  lt  ActionView  Base   include ApplicationController master helper module    def current user      let helpers act like we re a guest     nil   end           def self instance      instance     new   end end   Source  http   makandracards com makandra 1307-how-to-use-helper-methods-inside-a-model

User · Answer

Just change the first line as follows    include ActionView  Helpers   that will make it works   UPDATE  For Rails 3 use    ActionController  Base helpers sanitize str    Credit goes to lornc s answer

[ruby-on-rails] Using helpers in model: how do I include helper dependencies?

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