grails - 在Grails中使用DomainClassPropertyComparator

Question

在我的grails View 中，当我对每个单独的属性使用f:display时，不会选择应用于域类约束的顺序。我听说可以根据域类上的约束使用域类属性比较器对属性显示进行排序。

某些机构可以帮助我如何使用DomainClassPropertyComparator对 View 中的属性进行排序吗？

Answer 1

您可以安装脚手架模板，编辑_form.gsp并将其使用的比较器更改为DomainClassPropertyComparator例如。我的_form.gsp

    <%=packageName%>
<% import grails.persistence.Event %>
<% import org.codehaus.groovy.grails.scaffolding.DomainClassPropertyComparator %>


<%  excludedProps = Event.allEvents.toList() << 'version' << 'dateCreated' << 'lastUpdated'
    persistentPropNames = domainClass.persistentProperties*.name
    boolean hasHibernate = pluginManager?.hasGrailsPlugin('hibernate')
    if (hasHibernate && org.codehaus.groovy.grails.orm.hibernate.cfg.GrailsDomainBinder.getMapping(domainClass)?.identity?.generator == 'assigned') {
        persistentPropNames << domainClass.identifier.name
    }

DomainClassPropertyComparator mattsComparator = new DomainClassPropertyComparator(domainClass)
comparator = mattsComparator

props = domainClass.properties.findAll { persistentPropNames.contains(it.name) && !excludedProps.contains(it.name) }
    Collections.sort(props, comparator)
    for (p in props) {
        if (p.embedded) {
            def embeddedPropNames = p.component.persistentProperties*.name
            def embeddedProps = p.component.properties.findAll { embeddedPropNames.contains(it.name) && !excludedProps.contains(it.name) }
            Collections.sort(embeddedProps, comparator)
            %><fieldset class="embedded"><legend><g:message code="${domainClass.propertyName}.${p.name}.label" default="${p.naturalName}" /></legend><%
                for (ep in p.component.properties) {
                    renderFieldForProperty(ep, p.component, "${p.name}.")
                }
            %></fieldset><%
        } else {
            renderFieldForProperty(p, domainClass)
        }
    }

private renderFieldForProperty(p, owningClass, prefix = "") {
    boolean hasHibernate = pluginManager?.hasGrailsPlugin('hibernate')
    boolean display = true
    boolean required = false
    if (hasHibernate) {
        cp = owningClass.constrainedProperties[p.name]
        display = (cp ? cp.display : true)
        required = (cp ? !(cp.propertyType in [boolean, Boolean]) && !cp.nullable && (cp.propertyType != String || !cp.blank) : false)
    }
    if (display) { %>
<div class="fieldcontain \${hasErrors(bean: ${propertyName}, field: '${prefix}${p.name}', 'error')} ${required ? 'required' : ''}">
    <label for="${prefix}${p.name}">
        <g:message code="${domainClass.propertyName}.${prefix}${p.name}.label" default="${p.naturalName}" />
        <% if (required) { %><span class="required-indicator">*</span><% } %>
    </label>
    ${renderEditor(p)}
</div>
<%  }   } %>