To create a more modular Groovy Server Page we can use Grails' template support. We use <g:render template="..." ... /> or <tmpl:templateName ... /> tags to render the template content. These tags can have a body. The body of the tag is then available in the template code. We use the expression ${body()} in our template to output the body content.
Suppose we have the following template code:
1 2 3 | <%-- File: grails-app/views/product/_productView.gsp --%><h2>${product.name}</h2>${body()} |
We can use the template with different body contents:
1 2 3 4 5 6 7 8 9 10 11 12 | ...<g:each in="${products}" var="product"> <g:render template="productView" model="[product: product]"> <g:link uri="/">Back to home</g:link> </g:render></g:each>...<g:each in="${products}" var="product"> <tmpl:productView product="${product}"> <g:link controller="product" action="details" id="${product.id}">More details</g:link> </tmpl:productView></g:each>... |
If the content of the body has HTML tags and we have set in grails-app/conf/Config.groovy the property grails.views.default.codec to html we get escaped HTML. Instead of using ${body()} we must then use <%= body() %>.
