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Duzenbury, Rich

2007-Apr-02 19:02 UTC

boolean? Emit "Yes" or "No", not "true" or "false"

Hi,

I have a silly question.  I have a form that is filled out that has a
number of boolean values in it, represented by checkboxes.  After the
request is posted, I am generating an e-mail to send to the person
handling the request.  

In my mailer view (send_request.text.plain.rhtml), I do something like

Important thing one..: <%= @req.important_thing_1 %>
Important thing two..: <%= @req.important_thing_2 %>
Important thing three: <%= @req.important_thing_3 %>

Which is rendered as

Important thing one..: false
Important thing two..: true
Important thing three: false

I would like false to display as ''No'' and true to display as
''Yes''.  Is
there a knob or switch somewhere in rails to configure how boolean
values are converted into strings?  

Thank you.

Regards,

Rich 

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Jamal Soueidan

2007-Apr-02 19:33 UTC

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Re: boolean? Emit "Yes" or "No", not "true" or "false"

Duzenbury, Rich wrote:> Hi,
> 
> I have a silly question.  I have a form that is filled out that has a
> number of boolean values in it, represented by checkboxes.  After the
> request is posted, I am generating an e-mail to send to the person
> handling the request.
> 
> In my mailer view (send_request.text.plain.rhtml), I do something like
> 
> Important thing one..: <%= @req.important_thing_1 %>
> Important thing two..: <%= @req.important_thing_2 %>
> Important thing three: <%= @req.important_thing_3 %>
> 
> Which is rendered as
> 
> Important thing one..: false
> Important thing two..: true
> Important thing three: false
> 
> I would like false to display as ''No'' and true to display
as ''Yes''.  Is
> there a knob or switch somewhere in rails to configure how boolean
> values are converted into strings?
> 
> Thank you.
> 
> Regards,
> 
> Rich
I understand you want to change boolean to yes or no depend on true or 
false :)

If you want to use it in the view, you can put the code in the helper so 
you can access to it across all your template files :)

def to_yesorno(boolean)
   if boolean == ''yes''
     return ''yes''
   else
     return ''no''
   end
end

then you call on it

puts to_yesorno(''true'') #should return yes :D

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Philip Hallstrom

2007-Apr-02 19:41 UTC

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Re: boolean? Emit "Yes" or "No", not "true" or "false"

> I have a silly question.  I have a form that is filled out that has a
> number of boolean values in it, represented by checkboxes.  After the
> request is posted, I am generating an e-mail to send to the person
> handling the request.
>
> In my mailer view (send_request.text.plain.rhtml), I do something like
>
> Important thing one..: <%= @req.important_thing_1 %>
> Important thing two..: <%= @req.important_thing_2 %>
> Important thing three: <%= @req.important_thing_3 %>
>
> Which is rendered as
>
> Important thing one..: false
> Important thing two..: true
> Important thing three: false
>
> I would like false to display as ''No'' and true to display
as ''Yes''.  Is
> there a knob or switch somewhere in rails to configure how boolean
> values are converted into strings?
I don''t know if there is, but you could do something like this (and get
it loaded via environment.rb):

class TrueClass
   def to_yesno
     ''Yes''
    end
end

class FalseClass
   def to_yesno
     ''No''
    end
end

And then in your views do:

Important thing one..: <%= @req.important_thing_1.to_yesno %>
Important thing two..: <%= @req.important_thing_2.to_yesno %>
Important thing three: <%= @req.important_thing_3.to_yesno %>

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kennethkunz-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org

2007-Apr-03 02:16 UTC

head link

Re: boolean? Emit "Yes" or "No", not "true" or "false"

try the ternary operator:

bool ? ''Yes'' : ''No''

that will produce ''Yes'' for true and ''No''
for false; if you want an
empty string for nil, try:

(bool ? ''Yes'' : ''No'') unless bool.nil?

that will return nil if bool is nil, which will turn into an empty
string in an erb template (since nil.to_s is '''').

Of course, you could wrap that in a helper if you really want to, or
add custom methods to TrueClass, FalseClass and NilClass... but
personally, I find it clean/dry enough just to use the operator.

Cheers,
Ken


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Duzenbury, Rich

2007-Apr-03 13:53 UTC

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Re: boolean? Emit "Yes" or "No", not "true" or "false"

> try the ternary operator:
> 
> bool ? ''Yes'' : ''No''
> 
> that will produce ''Yes'' for true and
''No'' for false; if you
> want an empty string for nil, try:
> 
> (bool ? ''Yes'' : ''No'') unless bool.nil?
> 
> that will return nil if bool is nil, which will turn into an 
> empty string in an erb template (since nil.to_s is '''').
> 
> Of course, you could wrap that in a helper if you really want 
> to, or add custom methods to TrueClass, FalseClass and 
> NilClass... but personally, I find it clean/dry enough just 
> to use the operator.
> Hello,

Thanks, that works fine.  I normally avoid the ternary operator, but in
this case, it''s a very straight forward replacement so I''ve
chosen this
route.  

Thanks to everyone who took the time to reply.

Regards,
Rich

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Shawn Roske

2007-Apr-03 17:01 UTC

head link

Re: boolean? Emit "Yes" or "No", not "true" or "false"

Just because I was curious:

class TrueClass
  def to_s
    "Yes"
  end
end

class FalseClass
  def to_s
    "No"
  end
end

true.to_s => "Yes"
false.to_s => "No"

But this would mean *anywhere* you print out a boolean value it would
render "Yes" or "No".

-Shawn

On 4/3/07, Duzenbury, Rich <RDuz-lc0hzAU4LMUAvxtiuMwx3w@public.gmane.org>
wrote:>
>
> > try the ternary operator:
> >
> > bool ? ''Yes'' : ''No''
> >
> > that will produce ''Yes'' for true and
''No'' for false; if you
> > want an empty string for nil, try:
> >
> > (bool ? ''Yes'' : ''No'') unless
bool.nil?
> >
> > that will return nil if bool is nil, which will turn into an
> > empty string in an erb template (since nil.to_s is
'''').
> >
> > Of course, you could wrap that in a helper if you really want
> > to, or add custom methods to TrueClass, FalseClass and
> > NilClass... but personally, I find it clean/dry enough just
> > to use the operator.
> >
> Hello,
>
> Thanks, that works fine.  I normally avoid the ternary operator, but in
> this case, it''s a very straight forward replacement so
I''ve chosen this
> route.
>
> Thanks to everyone who took the time to reply.
>
> Regards,
> Rich
>
> >
>
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Shawn Roske

2007-Apr-03 17:01 UTC

head link

Re: boolean? Emit "Yes" or "No", not "true" or "false"

Woops, didn''t realize that someone answered this already!

Ignore me :)

-Shawn

On 4/3/07, Shawn Roske <sroske-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:> Just because I was curious:
>
> class TrueClass
>   def to_s
>     "Yes"
>   end
> end
>
> class FalseClass
>   def to_s
>     "No"
>   end
> end
>
> true.to_s => "Yes"
> false.to_s => "No"
>
> But this would mean *anywhere* you print out a boolean value it would
> render "Yes" or "No".
>
> -Shawn
>
> On 4/3/07, Duzenbury, Rich
<RDuz-lc0hzAU4LMUAvxtiuMwx3w@public.gmane.org> wrote:
> >
> >
> > > try the ternary operator:
> > >
> > > bool ? ''Yes'' : ''No''
> > >
> > > that will produce ''Yes'' for true and
''No'' for false; if you
> > > want an empty string for nil, try:
> > >
> > > (bool ? ''Yes'' : ''No'') unless
bool.nil?
> > >
> > > that will return nil if bool is nil, which will turn into an
> > > empty string in an erb template (since nil.to_s is
'''').
> > >
> > > Of course, you could wrap that in a helper if you really want
> > > to, or add custom methods to TrueClass, FalseClass and
> > > NilClass... but personally, I find it clean/dry enough just
> > > to use the operator.
> > >
> > Hello,
> >
> > Thanks, that works fine.  I normally avoid the ternary operator, but
in
> > this case, it''s a very straight forward replacement so
I''ve chosen this
> > route.
> >
> > Thanks to everyone who took the time to reply.
> >
> > Regards,
> > Rich
> >
> > > >
> >
>
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Peter Ehrlich

2013-Feb-15 21:29 UTC

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Re: boolean? Emit "Yes" or "No", not "true" or "false"

Found via google.  I made a quick script for this.  Sorry for reviving..

class TrueClass
  def to_s(style = :boolean)
    case style
      when :word then ''yes''
      when :Word then ''Yes''
      when :number then ''1''
      else ''true''
    end
  end
end

class FalseClass
  def to_s(style = :boolean)
    case style
      when :word then ''no''
      when :Word then ''No''
      when :number then ''0''
      else ''false''
    end
  end
end

https://gist.github.com/pehrlich/4963672

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Rails - Apr 2007 - boolean? Emit "Yes" or "No", not "true" or "false"

boolean? Emit "Yes" or "No", not "true" or "false"

Re: boolean? Emit "Yes" or "No", not "true" or "false"

Re: boolean? Emit "Yes" or "No", not "true" or "false"

Re: boolean? Emit "Yes" or "No", not "true" or "false"

Re: boolean? Emit "Yes" or "No", not "true" or "false"

Re: boolean? Emit "Yes" or "No", not "true" or "false"

Re: boolean? Emit "Yes" or "No", not "true" or "false"

Re: boolean? Emit "Yes" or "No", not "true" or "false"