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
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 %>
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 
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
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
Woops, didn’t realize that someone answered this already!
Ignore me
-Shawn
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
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