def dateFormat = { attrs, body ->
out << new java.text.SimpleDateFormat(attrs.format).format(attrs.date)
}
8.3.2 Simple Tags
Version: 3.2.4
8.3.2 Simple Tags
As demonstrated in the previous example it is easy to write simple tags that have no body and just output content. Another example is a dateFormat
style tag:
The above uses Java’s SimpleDateFormat
class to format a date and then write it to the response. The tag can then be used within a GSP as follows:
<g:dateFormat format="dd-MM-yyyy" date="${new Date()}" />
With simple tags sometimes you need to write HTML mark-up to the response. One approach would be to embed the content directly:
def formatBook = { attrs, body ->
out << "<div id=\"${attrs.book.id}\">"
out << "Title : ${attrs.book.title}"
out << "</div>"
}
Although this approach may be tempting it is not very clean. A better approach would be to reuse the render tag:
def formatBook = { attrs, body ->
out << render(template: "bookTemplate", model: [book: attrs.book])
}
And then have a separate GSP template that does the actual rendering.