Hi, Tapestry's t:checkbox parameter uses the "value" parameter to determine if the checkbox should be rendered as checked or not. the "value" parameter supposed to be a boolean, but if you provide anything else, Tapestry will attempt to coerce the provided argument to boolean. There are multiple built-in Tapestry coercions from various Java types to boolean, some examples:
- String - if it is empty or null or equal to "false" (case insensitive) is coerced false, otherwise true. - Numbers (int, long, etc.) - non-zero values are true; - Collections (lists, maps) - non-empty are true; - Any other generic object, not coerced otherwise - non-null values are true; So, in your case, "acronyms" is something that Tapestry coerces to Boolean as the "true" value. If you need to make the checkbox unchecked, provide the "value" parameter that evaluates as "false". About coercions you can read here: https://tapestry.apache.org/parameter-type-coercion.html https://tapestry.apache.org/type-coercion.html Details about default type coercions can be found here: https://github.com/apache/tapestry-5/blob/master/commons/src/main/java/org/apache/tapestry5/ioc/internal/BasicTypeCoercions.java Cezary On Tue, Oct 6, 2020 at 9:33 PM marwa hussein <marwa.huss...@gmail.com> wrote: > On Tue, Oct 6, 2020 at 5:17 PM Nathan Quirynen < > nat...@pensionarchitects.be> > wrote: > > > Is it possible that your "acronyms" property has a value of true when > > rendering ? > > > > No it is not. Also I am wondering what could make the "checked" attribute > default to be true!! > Also I cant find in tapestry API how to change the attribute checked value > to false!! > > > > > > Op 6/10/2020 om 14:42 schreef marwa hussein: > > > Hi all, > > > > > > I am trying to populate a grid with some values and add a column with a > > > checkbox to select a value.. > > > > > > <t:grid t:source="OntologyInfoList" row="OntologyInfo" add="Select"> > > > > > > <p:selectcell> > > > <t:checkbox t:id="select" value="acronyms"/> > > > > > > The problem when the grid is populated I found the Checkbox checked by > > > default, although I didn't use the "check" attribute (which suppose to > be > > > "false" by default)!! > > > how can I make solve this and make it unchecked in the begining?? > > > > > > Regards, > > > Marwa > > > > > > > --------------------------------------------------------------------- > > To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org > > For additional commands, e-mail: users-h...@tapestry.apache.org > > > > > > -- > > > > *Marwa Hussein M. TA @ Information Systems Department Faculty of Computers > & Information Assuit University* > <imanhe...@yahoo.com> >
