GRAILS: groovy.lang.MissingPropertyException: No such property. - grails

Question

I'm trying to debug a Grails application. Unfortunately, I have no prior experience in said language.
When I do grails generate-all org.example.Book, I get back a vague error:
Generating controller for domain class org.example.Book ...
groovy.lang.MissingPropertyException: No such property: Event for class: SimpleTemplateScript6
at SimpleTemplateScript6.run(SimpleTemplateScript6.groovy:22)
at _GrailsGenerate_groovy.generateForDomainClass(_GrailsGenerate_groovy:88)
at _GrailsGenerate_groovy$_run_closure1.doCall(_GrailsGenerate_groovy:48)
at GenerateAll$_run_closure1.doCall(GenerateAll.groovy:42)
at gant.Gant$_dispatch_closure5.doCall(Gant.groovy:381)
at gant.Gant$_dispatch_closure7.doCall(Gant.groovy:415)
at gant.Gant$_dispatch_closure7.doCall(Gant.groovy)
at gant.Gant.withBuildListeners(Gant.groovy:427)
at gant.Gant.this$2$withBuildListeners(Gant.groovy)
at gant.Gant$this$2$withBuildListeners.callCurrent(Unknown Source)
at gant.Gant.dispatch(Gant.groovy:415)
at gant.Gant.this$2$dispatch(Gant.groovy)
at gant.Gant.invokeMethod(Gant.groovy)
at gant.Gant.executeTargets(Gant.groovy:590)
at gant.Gant.executeTargets(Gant.groovy:589)
Error running generate-all: No such property: Event for class: SimpleTemplateScript6
After looking at the generated org.example.BookController.groovy source, I noticed that it was not fully generated (stopped at List fields = []):
package org.example
// import needed for export plugin
import org.codehaus.groovy.grails.commons.ConfigurationHolder
class BookController {
...
def exportService
def export = {attrs ->
def response = attrs.response
List fields = []
This error appears to be caused by the following code in templates/scaffolding/Controller.groovy:
<%=packageName ? "package ${packageName}\n\n" : ''%>
// import needed for export plugin
import org.codehaus.groovy.grails.commons.ConfigurationHolder
class ${className}Controller {
static allowedMethods = [save: "POST", update: "POST", delete: "POST"]^M
def exportService
...
def export = {attrs ->
def response = attrs.response
List fields = []
<% excludedProps = Event.allEvents.toList() << 'version'
allowedNames = domainClass.persistentProperties*.name << 'id' << 'dateCreated' << 'lastUpdated'
props = domainClass.properties.findAll { allowedNames.contains(it.name) && !excludedProps.contains(it.name) && !Collection.isAssignableFrom(it.type) }
Collections.sort(props, comparator.constructors[0].newInstance([domainClass] as Object[]))
props.eachWithIndex {p, i -> %>fields.push("${p.name}"<%="\n"%><% } %>
Map labels = [:]
<% props.eachWithIndex { p, i -> %>labels.putAt("\${p.name}", "\${p.naturalName}")<%="\n "%><% } %>
Map formatters = [:]
Map parameters = [:]
response.setHeader("Content-disposition", "attachment; filename=${domainClass.propertyName}s.\${attrs.extension}")
if("\${attrs.extension}" == "xml") {
exportService.export(attrs.format, response.outputStream, attrs.exportList, fields, [:], formatters, parameters)
} else {
exportService.export(attrs.format, response.outputStream, attrs.exportList, fields, labels, formatters, parameters)
}
}
...
}
It appears that the def export {} block seems to be causing problems. Is there something wrong with the above code?

Answer 1

What is the Event class? Is there an import for it?

Answer 2

Check your domain class for syntax errors. Make sure that in your domain class, you've included necessary packages, in your case, package org.example.