grails - Grails拒绝值错误和域错误验证

Question

我正在尝试在grails中进行一些服务器端验证，并将我的错误作为json传递回前端，以便由angularjs处理。

错误条件

Department - required 
Department - unique
Description - foobar not allowed

我有以下代码。

Controller

def saveDepartment() {
    def errors = []
    def success = true      
    def department

    try{
        department = departmentService.save(request.JSON);  

        if(department.hasErrors()) {
            success = false
            errors = department.errors.fieldErrors;         
        }           
    } catch(Exception e){
        e.printStackTrace()
        errors = "Unknown"
        success = false

        if(log.errorEnabled){
            log.error("save department encountered unknown error: ", e)
        }

        response.status = 500
    } finally {
        respond ([success:success, errors:errors, department:department]) as JSON;
    }
}

服务

def save(jsonObj) {
    def dept = new Department();
    dept.setName(jsonObj.name);     
    dept.setDescription(jsonObj.description);

    if(dept.description.equals('foobar')) {
        dept.errors.rejectValue('description', 'foobar', 'Foobar is not allowed')
    }

    if (!dept.save()) {
        dept.discard();
    }

    return dept;
}

服务方法尝试2，带有调试代码

def save(jsonObj) {
    def dept = new Department();
    dept.setName(jsonObj.name);
    dept.setDescription(jsonObj.description);

    if(dept.description.equals('foobar')) {
        println 'rejected value '
        dept.errors.rejectValue('description', 'foobar', 'Foobar is not allowed')
    }

    println 'dept errors ' + dept.errors.allErrors.size();

    if (dept.errors.hasErrors()) {
        dept.errors.allErrors.each {FieldError error ->
            println error
        }
    }

    if (!dept.save(true)) {
        println 'dept errors 2 ' + dept.errors.allErrors.size();

        if (dept.errors.hasErrors()) {
            dept.errors.allErrors.each {FieldError error ->
                println error
            }
        }
    }

    return dept;
}

输出量

..................rejected value 
dept errors 1
Field error in object 'org.hri.leaverequest.Department' on field 'description': rejected value [foobar]; codes [foobar.org.hri.leaverequest.Department.descripti
on,foobar.description,foobar.java.lang.String,foobar]; arguments []; default message [Foobar is not allowed]
dept errors 2 1
Field error in object 'org.hri.leaverequest.Department' on field 'name': rejected value [null]; codes [org.hri.leaverequest.Department.name.nullable.error.org.h
ri.leaverequest.Department.name,org.hri.leaverequest.Department.name.nullable.error.name,org.hri.leaverequest.Department.name.nullable.error.java.lang.String,or
g.hri.leaverequest.Department.name.nullable.error,department.name.nullable.error.org.hri.leaverequest.Department.name,department.name.nullable.error.name,depart
ment.name.nullable.error.java.lang.String,department.name.nullable.error,org.hri.leaverequest.Department.name.nullable.org.hri.leaverequest.Department.name,org.
hri.leaverequest.Department.name.nullable.name,org.hri.leaverequest.Department.name.nullable.java.lang.String,org.hri.leaverequest.Department.name.nullable,depa
rtment.name.nullable.org.hri.leaverequest.Department.name,department.name.nullable.name,department.name.nullable.java.lang.String,department.name.nullable,nulla
ble.org.hri.leaverequest.Department.name,nullable.name,nullable.java.lang.String,nullable]; arguments [name,class org.hri.leaverequest.Department]; default mess
age [Property [{0}] of class [{1}] cannot be null]

问题

如果部门为null，并且说明的foobar具有rejectValue，则仅返回一个错误“部门null”，而foobar不会出现在错误中。

如果部门包含现有值，并且描述包含foobar，则返回唯一约束，但foobar不会出现在错误中。

如果部门具有很好的值并且foobar仍然存在，则rejectValue不会阻止保存的发生，并且不会引发任何错误。现在，如果我在rejectValue之后输出dept.errors，我可以看到该错误实际上存在。

目标

我的目标是返回我所有的错误，如果存在错误，则不保存到数据库中，要实现该目标我缺少什么？

Answer 1

您可以这样操作:

dept.validate()

if(dept.description.equals('foobar')) {
    dept.errors.rejectValue('description', 'foobar', 'Foobar is not allowed')
}

if(!dept.errors.hasErrors()) {
    dept.save()
}

return dept