在Meteor AutoForm SimpleSchema中验证日期值

Question

我有以下Schema:

Dates.attachSchema(new SimpleSchema({
    description: {
        type: String,
        label: "Description",
        max: 50
    },
    start: {
        type: Date,
        autoform: {
            afFieldInput: {
                type: "bootstrap-datepicker"
            }
        }
    },
    end: {
        type: Date,
        autoform: {
            afFieldInput: {
                type: "bootstrap-datepicker"
            }
        }
    }
}));

如何验证end日期不在start日期之前?我使用MomentJS来处理日期类型，但我的主要问题是如何访问custom函数中的其他属性。

例如:

end: {
   type: Date,
   autoform: {
       afFieldInput: {
           type: "bootstrap-datepicker"
       }
   },
   custom: function() {
       if (moment(this.value).isBefore(start)) return "badDate";
   }
}

如何访问start

此外，我如何验证start + end日期组合是否唯一，这意味着我的数据库中没有保存具有完全相同的start和end日期的文档?

Answer 1

对于域间通信，您可以这样做:

end: {
  type: Date,
  autoform: {
    afFieldInput: {
      type: "bootstrap-datepicker"
    }
  },
  custom: function() {
    // get a reference to the fields
    var start = this.field('start');
    var end = this;
    // Make sure the fields are set so that .value is not undefined
    if (start.isSet && end.isSet) {
      if (moment(end.value).isBefore(start.value)) return "badDate";
    }
  }
}

你当然应该先声明badDate错误

SimpleSchema.messages({
  badDate: 'End date must be after the start date.',
  notDateCombinationUnique: 'The start/end date combination must be unique'
})

关于唯一性，首先简单模式本身不提供唯一性检查。你应该添加aldeed:collection2。

此外，collection2只能检查单个字段的唯一性。要完成复合索引，应该使用ensureIndex语法

Dates._ensureIndex( { start: 1, end: 1 }, { unique: true } )

即使在此之后，您也无法在表单上看到这个复合索引的错误，因为autoform需要意识到存在这样的错误。

AutoForm.hooks({
  NewDatesForm: { // Use whatever name you have given your form
    before: {
      method: function(doc) {
        var form = this;
        // clear the error that gets added on the previous error so the form can proceed the second time
        form.removeStickyValidationError('start');
        return doc;
      }
    },
    onSuccess: function(operation, result, template) {
      if (result) {
        // do whatever you want if the form submission is successful;
      }
    },
    onError: function(operation, error) {
      var form = this;
      if (error) {
        if (error.reason && error.reason.indexOf('duplicate key error')) {
          // We add this error to the first field so it shows up there
          form.addStickyValidationError('start', 'notDateCombinationUnique'); // of course you have added this message to your definition earlier on
          AutoForm.validateField(form.formId, 'start');
        }
      }
    }
  }
});