Hello people I need your help again. What I want to do is make a text field accepts only numeric values... Thant''s means if I press a letter or a simbol the text field should not be filled, it should be just if I press a number. Is there a rails way (rails 3.0.9) to achieve this issue? Thanks -- 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.
I don''t know if there''s a Rails way (I''m still learning it myself) but if you want to implement this on the client you''ll need JavaScript. Or, you can use the HTML5 input type "number", but that''s not guaranteed to work on all browsers. http://www.html5tutorial.info/html5-number.php -- *Hector Virgen* http://www.virgentech.com Circle me on Google+ https://plus.google.com/101544567700763078999/ On Mon, Dec 12, 2011 at 1:28 PM, Angelo Cordova <acordinz-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:> Hello people > > I need your help again. > > What I want to do is make a text field accepts only numeric values... > Thant''s means if I press a letter or a simbol the text field should > not be filled, it should be just if I press a number. > > Is there a rails way (rails 3.0.9) to achieve this issue? > > Thanks > > -- > 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. > >-- 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.
I would go ahead and code the input type="number" element from HTML5,
then provide a fallback for visitors whose browsers don''t understand
that element. Here''s a Prototype.js solution, modify if needed to
jQuery depending on your environment:
//include prototype.js before this point
document.observe(''dom:loaded'', function(){
var test = new
Element(''input'',{type:''number''});
if(test.type != ''number''){
$$(''input[type="number"]'').each(function(elm){
elm.observe(''blur'',function(evt){
this.setValue($F(this).gsub(/[^0-9]+/,'''');
});
}
});
Note that if you have a lot of number fields on the same page, this will suck
memory, because it defines a callback listener on each field separately. Take a
look at the rails.js code for an example of how to force form fields to
"bubble" (they don''t, usually, not in most browsers) so that
you can define a single listener function on the blur event and work out
backward whether the field that threw that event needs this filter or not. That
will scale much better than this technique, but it''s more opaque to
look at as an example.
Walter
On Dec 12, 2011, at 4:28 PM, Angelo Cordova wrote:
> Hello people
>
> I need your help again.
>
> What I want to do is make a text field accepts only numeric values...
> Thant''s means if I press a letter or a simbol the text field
should
> not be filled, it should be just if I press a number.
>
> Is there a rails way (rails 3.0.9) to achieve this issue?
>
> Thanks
>
> --
> 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
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rubyonrails-talk+unsubscribe@googlegroups.com.
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>
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On 12 dic, 16:28, Angelo Cordova <acord...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:> Hello people > > I need your help again. > > What I want to do is make a text field accepts only numeric values... > Thant''s means if I press a letter or a simbol the text field should > not be filled, it should be just if I press a number. > > Is there a rails way (rails 3.0.9) to achieve this issue? >I''m not sure but it seems to be what you need http://api.rubyonrails.org/classes/ActionView/Helpers/FormHelper.html#method-i-number_field http://api.rubyonrails.org/classes/ActionView/Helpers/FormTagHelper.html#method-i-number_field_tag Or you could add the html5 option when you write your code Javier Q -- 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.
Typo, left out a trailing parenthesis:
//include prototype.js before this point
document.observe(''dom:loaded'', function(){
var test = new
Element(''input'',{type:''number''});
if(test.type != ''number''){
$$(''input[type="number"]'').each(function(elm){
elm.observe(''blur'',function(evt){
this.setValue($F(this).gsub(/[^0-9]+/,''''));
});
}
});
Walter
On Dec 13, 2011, at 10:20 AM, Walter Lee Davis wrote:
> I would go ahead and code the input type="number" element from
HTML5, then provide a fallback for visitors whose browsers don''t
understand that element. Here''s a Prototype.js solution, modify if
needed to jQuery depending on your environment:
>
> //include prototype.js before this point
> document.observe(''dom:loaded'', function(){
> var test = new
Element(''input'',{type:''number''});
> if(test.type != ''number''){
>
$$(''input[type="number"]'').each(function(elm){
> elm.observe(''blur'',function(evt){
> this.setValue($F(this).gsub(/[^0-9]+/,'''');
> });
> }
> });
>
> Note that if you have a lot of number fields on the same page, this will
suck memory, because it defines a callback listener on each field separately.
Take a look at the rails.js code for an example of how to force form fields to
"bubble" (they don''t, usually, not in most browsers) so that
you can define a single listener function on the blur event and work out
backward whether the field that threw that event needs this filter or not. That
will scale much better than this technique, but it''s more opaque to
look at as an example.
>
> Walter
>
> On Dec 12, 2011, at 4:28 PM, Angelo Cordova wrote:
>
>> Hello people
>>
>> I need your help again.
>>
>> What I want to do is make a text field accepts only numeric values...
>> Thant''s means if I press a letter or a simbol the text field
should
>> not be filled, it should be just if I press a number.
>>
>> Is there a rails way (rails 3.0.9) to achieve this issue?
>>
>> Thanks
>>
>> --
>> 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.
>>
>
> --
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>
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