there is a reference example in the documentation in iview
<FormItem    v-for="(item, index) in formDynamic.items"
             v-if="item.status"
             :key="index"
             :label=""Item " + item.index"
             :prop=""items." + index + ".value""
             :rules="{required: true, message: "Item " + item.index +" can not be empty", trigger: "blur"}">
        </FormItem>now implement custom validation in rules
<FormItem v-if="actionLabel!==""&&showActionValType===1"
                          :label="actionLabelText"
                          prop="actionValDIM"
                          :rules="{required: true,validator:"validateInt" , trigger: "blur"}">
                    <Slider v-model="programForm.actionValDIM" :tip-format="format" style="width: 400px"></Slider>
                </FormItem>how to pass the function validateInt in
it"s like a document in data. It"s written in OK, but I think there"s a problem with uploading it in": rules= "{required: true,validator:"validateInt", trigger: "blur"}"
.ruleCustom: {
                    passwd: [
                        { validator: validatePass, trigger: "blur" }
                    ],
                    passwdCheck: [
                        { validator: validatePassCheck, trigger: "blur" }
                    ],
                    age: [
                        { validator: validateAge, trigger: "blur" }
                    ]
                }