Grails g:select setting selectedIndex
How do you set th开发者_运维技巧e selectedIndex on a <g:select> tag with a value from the list? I have a page that allows you to add a record. the page then goes to a view containing a g:select and i want the g:select to default to that item i just inserted into the database.
I tried passing the new object in the flash but i can't figure out how to get it's index in the list being used to generate the g:select data.
Supposing you store a Book object in flash.book at the controller level, your second page could look like this :
<html>
<head>
<g:javascript library="prototype" />
<g:javascript>
function showLast(selectedId) {
if (selectedId) {
$$('#books option[value=' + selectedId + "]")[0].selected = true;
} else {
$('books').selectedIndex = 0;
}
};
Event.observe(window, 'load', init, false);
function init() {
showLast(${flash?.book?.id});
}
</g:javascript>
</head>
<body>
<g:select id="books" name="id"
from="${Book.list()}"
value="title"
optionValue="title"
optionKey="id"
/>
</body>
</html>
加载中,请稍侯......
精彩评论