checkBox
Purpose
Creates a checkbox form field. All the usual HTML elements apply.
Examples
<g:checkBox name="myCheckbox" value="${true}" />Description
Attributes
name - The name of the checkboxvalue (optional) - The value of the checkboxchecked (optional) - Expression if evaluates to true sets to checkbox to checked
The checkBox tag typically only requires the name and value attributes and will infer whether the checkbox should be checked or not from the value. However, if you need to override this behaviour the checked attribute can be used for fine grained control.Source
Show Source
def checkBox = {attrs ->
attrs.id = attrs.id ? attrs.id : attrs.name
def value = attrs.remove('value')
def name = attrs.remove('name') // Deal with the "checked" attribute. If it doesn't exist, we
// default to a value of "true", otherwise we use Groovy Truth
// to determine whether the HTML attribute should be displayed
// or not.
def checked = true
if (attrs.containsKey('checked')) {
checked = attrs.remove('checked')
} if (checked instanceof String) checked = Boolean.valueOf(checked) if (value == null) value = false // the hidden field name should begin with an underscore unless it is
// a dotted name, then the underscore should be inserted after the last
// dot
def lastDotInName = name.lastIndexOf('.')
def hiddenFieldName = lastDotInName == -1 ? '_' + name : name[0..lastDotInName] + '_' + name[(lastDotInName+1)..-1] out << "<input type=\"hidden\" name=\"${hiddenFieldName}\" /><input type=\"checkbox\" name=\"${name}\" "
if (value && checked) {
out << 'checked="checked" '
}
def outputValue = !(value instanceof Boolean || value?.class == boolean.class)
if (outputValue)
out << "value=\"${value}\" "
// process remaining attributes
outputAttributes(attrs) // close the tag, with no body
out << ' />' }