thr3ads.net - Rails - create custom validation [Feb 2010]

If this information is useful, please help other people find it:
Share via:

Aldo Italo

2010-Feb-20 12:35 UTC

create custom validation

hi, i created a validation to prevent users to write text uppercase in
my fields, i have writing the code on my class model like this:

#####################

  validate :detect_uppercase_title, :detect_uppercase_description

  private

  #prevent users to write text uppercase, and reset field text to
lowercase
  def detect_uppercase_title
    size_letters = title.scan(/\w/).size
    size_invalid = title.scan(/[A-Z]/).size
    if size_invalid > 0
      if (size_letters / size_invalid) < 4 and size_letters > 10
        errors.add( :title,
I18n.t(''activerecord.errors.messages.uppercase''))
        write_attribute(:title, title.downcase)
      end
    end
  end
  def detect_uppercase_description
    size_letters = description.scan(/\w/).size
    size_invalid = description.scan(/[A-Z]/).size
    if size_invalid > 0
      if (size_letters / size_invalid) < 4 and size_letters > 10
        errors.add( :description,
I18n.t(''activerecord.errors.messages.uppercase''))
        write_attribute(:description, description.downcase)
      end
    end
  end

#####################

but now i want to define a function to doing this without repeating and
make more DRY the code.

i have tried with this:

#####################

  validate detect_uppercase(title), detect_uppercase(description)

  private


  def detect_uppercase(field)
    size_letters = field.scan(/\w/).size
    size_invalid = field.scan(/[A-Z]/).size
    if size_invalid > 0
      if (size_letters / size_invalid) < 4 and size_letters > 10
        errors.add( field,
I18n.t(''activerecord.errors.messages.uppercase''))
        write_attribute(field, field.downcase)
      end
    end
  end

#####################

but i see it not work.
hw can i do to implement my necessity?
-- 
Posted via http://www.ruby-forum.com/.

-- 
You received this message because you are subscribed to the Google Groups
"Ruby on Rails: Talk" group.
To post to this group, send email to
rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org
To unsubscribe from this group, send email to
rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org
For more options, visit this group at
http://groups.google.com/group/rubyonrails-talk?hl=en.

kannav rajeev

2010-Feb-20 14:00 UTC

head link

Re: create custom validation

Try this


def validates_on_yours_method_name
 size_letters = field.scan(/\w/).size
   size_invalid = field.scan(/[A-Z]/).size
   if size_invalid > 0
     if (size_letters / size_invalid) < 4 and size_letters > 10
       errors.add( field,
I18n.t(''activerecord.errors.
messages.uppercase''))
       write_attribute(field, field.downcase)
     end
   end

end

On Sat, Feb 20, 2010 at 6:05 PM, Aldo Italo
<lists-fsXkhYbjdPsEEoCn2XhGlw@public.gmane.org> wrote:
> hi, i created a validation to prevent users to write text uppercase in
> my fields, i have writing the code on my class model like this:
>
> #####################
>
>  validate :detect_uppercase_title, :detect_uppercase_description
>
>  private
>
>  #prevent users to write text uppercase, and reset field text to
> lowercase
>  def detect_uppercase_title
>    size_letters = title.scan(/\w/).size
>    size_invalid = title.scan(/[A-Z]/).size
>    if size_invalid > 0
>      if (size_letters / size_invalid) < 4 and size_letters > 10
>        errors.add( :title,
> I18n.t(''activerecord.errors.messages.uppercase''))
>        write_attribute(:title, title.downcase)
>      end
>    end
>  end
>  def detect_uppercase_description
>    size_letters = description.scan(/\w/).size
>    size_invalid = description.scan(/[A-Z]/).size
>    if size_invalid > 0
>      if (size_letters / size_invalid) < 4 and size_letters > 10
>        errors.add( :description,
> I18n.t(''activerecord.errors.messages.uppercase''))
>        write_attribute(:description, description.downcase)
>      end
>    end
>  end
>
> #####################
>
> but now i want to define a function to doing this without repeating and
> make more DRY the code.
>
> i have tried with this:
>
> #####################
>
>  validate detect_uppercase(title), detect_uppercase(description)
>
>  private
>
>
>  def detect_uppercase(field)
>    size_letters = field.scan(/\w/).size
>    size_invalid = field.scan(/[A-Z]/).size
>    if size_invalid > 0
>      if (size_letters / size_invalid) < 4 and size_letters > 10
>        errors.add( field,
> I18n.t(''activerecord.errors.messages.uppercase''))
>        write_attribute(field, field.downcase)
>      end
>    end
>  end
>
> #####################
>
> but i see it not work.
> hw can i do to implement my necessity?
> --
> Posted via http://www.ruby-forum.com/.
>
> --
> You received this message because you are subscribed to the Google Groups
> "Ruby on Rails: Talk" group.
> To post to this group, send email to
rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org
> To unsubscribe from this group, send email to
>
rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org<rubyonrails-talk%2Bunsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org>
> .
> For more options, visit this group at
> http://groups.google.com/group/rubyonrails-talk?hl=en.
>
>

-- 
Thanks:
Rajeev sharma

-- 
You received this message because you are subscribed to the Google Groups
"Ruby on Rails: Talk" group.
To post to this group, send email to
rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org
To unsubscribe from this group, send email to
rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org
For more options, visit this group at
http://groups.google.com/group/rubyonrails-talk?hl=en.

Hassan Schroeder

2010-Feb-20 15:47 UTC

head link

Re: create custom validation

On Sat, Feb 20, 2010 at 4:35 AM, Aldo Italo
<lists-fsXkhYbjdPsEEoCn2XhGlw@public.gmane.org>
wrote:> hi, i created a validation to prevent users to write text uppercase in
> my fields, i have writing the code on my class model like this:
>  #prevent users to write text uppercase, and reset field text to lowercase
Do you really need to "prevent" them, or can you just downcase it
and be done? In any case, wouldn''t the easiest check be something
like

  unless ( field.downcase == field ) errors.add( ... )

?
-- 
Hassan Schroeder ------------------------
hassan.schroeder-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org
twitter: @hassan

-- 
You received this message because you are subscribed to the Google Groups
"Ruby on Rails: Talk" group.
To post to this group, send email to
rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org
To unsubscribe from this group, send email to
rubyonrails-talk+unsubscribe@googlegroups.com.
For more options, visit this group at
http://groups.google.com/group/rubyonrails-talk?hl=en.

Aldo Italo

2010-Feb-20 16:49 UTC

head link

Re: create custom validation

i have resolved with this:

  #prevent users to write text uppercase, and reset field text to 
lowercase
  validates_each :title, :description do |model, attr, value|
    size_letters = value.scan(/\w/).size
    size_invalid = value.scan(/[A-Z]/).size
    if size_invalid > 0
      if (size_letters / size_invalid) < 4 and size_letters > 10
        model.errors.add( attr, 
I18n.t(''activerecord.errors.messages.uppercase''))
        model.write_attribute(attr, value.downcase)
      end
    end
  end

for  Hassan Schroeder: i want the user write in uppercae only certain 
letters( itials of names, letter after points, etc..). with my solution 
i concur the user to write in the text the 25% of letters uppercase.

thanks to all.



-- 
Posted via http://www.ruby-forum.com/.

-- 
You received this message because you are subscribed to the Google Groups
"Ruby on Rails: Talk" group.
To post to this group, send email to
rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org
To unsubscribe from this group, send email to
rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org
For more options, visit this group at
http://groups.google.com/group/rubyonrails-talk?hl=en.

Rails - Feb 2010 - create custom validation

create custom validation

Re: create custom validation

Re: create custom validation

Re: create custom validation