当我对多边形使用 update_attributes 时出现奇怪的更新
Weird update when I use update_attributes with polygons
我有一个 class 没有 attr_accessible，我们称它为 MyClass。
当我使用
MyClass.find(<id>).update_attributes(
polygon1: MyPolygon1,
polygon2: MyPolygon2
)
数据库中的新值是：
polygon1 = MyPolygon1 (OK)
polygon2 = '' (WRONG)
我们应该考虑 MyPolygon1 和 Mypoligon2 的值
MyPolygon1 = "POLYGON((-70.43399999999997 -33.480000000000004,-70.44400000000002 -33.485,-70.47199999999998 -33.475,-70.50799999999998 -33.436,-70.53899999999999 -33.429,-70.584 -33.432,-70.608 -33.416000000000004,-70.60500000000002 -33.409,-70.51600000000002 -33.372,-70.47699999999998 -33.364,-70.483 -33.377,-70.47699999999998 -33.393,-70.45400000000001 -33.397,-70.452 -33.417,-70.43399999999997 -33.428,-70.428 -33.458,-70.43399999999997 -33.480000000000004))"
MyPolygon2 = "POLYGON((-70.4337852 -33.48014739999999,-70.4344264 -33.481217,-70.43597139999999 -33.4822192,-70.4372588 -33.4837941,-70.438203 -33.4852258,-70.4388896 -33.4856554,-70.4404346 -33.4856554,-70.4442969 -33.4852258,-70.4472152 -33.484152099999996,-70.449361 -33.4830067,-70.4507342 -33.4825772,-70.45210749999998 -33.4817897,-70.4540816 -33.4805011,-70.4561416 -33.4792841,-70.4582873 -33.4778523,-70.460004 -33.476420399999995,-70.4615489 -33.4756329,-70.4646388 -33.4754181,-70.4672996 -33.4752033,-70.4694453 -33.4752749,-70.4710761 -33.4752033,-70.47244939999999 -33.4747022,-70.4742519 -33.4731987,-70.4764835 -33.4707644,-70.4779426 -33.4687597,-70.4800025 -33.46704129999999,-70.4822341 -33.4653229,-70.4841224 -33.463676,-70.4859715 -33.4628224,-70.4870873 -33.45945689999999,-70.48871809999999 -33.456521,-70.4906246 -33.4546496,-70.4916363 -33.4536566,-70.4939537 -33.4516515,-70.4955845 -33.450792099999994,-70.4949837 -33.4485004,-70.4949837 -33.4478201,-70.4952412 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最后我可以添加一些我的数据库的相关信息。我使用 postgres 适配器，列的类型是 geometry(Polygon,4326).
我哪里不见了？ ._.
poligon2 列的类型是什么？
也许您尝试保存的数据对于您的列类型而言太长（9k 个字符）。
终于找到错误了...
就在这里：
-70.4337852 -33.48014739999999,
-70.4337852 -33.48014739999999
我的多边形的最后两个点相同。 postgis 将该多边形保存为空白寄存器._.
非常感谢大家！ :)
我有一个 class 没有 attr_accessible，我们称它为 MyClass。 当我使用
MyClass.find(<id>).update_attributes(
polygon1: MyPolygon1,
polygon2: MyPolygon2
)
数据库中的新值是：
polygon1 = MyPolygon1 (OK)
polygon2 = '' (WRONG)
我们应该考虑 MyPolygon1 和 Mypoligon2 的值
MyPolygon1 = "POLYGON((-70.43399999999997 -33.480000000000004,-70.44400000000002 -33.485,-70.47199999999998 -33.475,-70.50799999999998 -33.436,-70.53899999999999 -33.429,-70.584 -33.432,-70.608 -33.416000000000004,-70.60500000000002 -33.409,-70.51600000000002 -33.372,-70.47699999999998 -33.364,-70.483 -33.377,-70.47699999999998 -33.393,-70.45400000000001 -33.397,-70.452 -33.417,-70.43399999999997 -33.428,-70.428 -33.458,-70.43399999999997 -33.480000000000004))"
MyPolygon2 = "POLYGON((-70.4337852 -33.48014739999999,-70.4344264 -33.481217,-70.43597139999999 -33.4822192,-70.4372588 -33.4837941,-70.438203 -33.4852258,-70.4388896 -33.4856554,-70.4404346 -33.4856554,-70.4442969 -33.4852258,-70.4472152 -33.484152099999996,-70.449361 -33.4830067,-70.4507342 -33.4825772,-70.45210749999998 -33.4817897,-70.4540816 -33.4805011,-70.4561416 -33.4792841,-70.4582873 -33.4778523,-70.460004 -33.476420399999995,-70.4615489 -33.4756329,-70.4646388 -33.4754181,-70.4672996 -33.4752033,-70.4694453 -33.4752749,-70.4710761 -33.4752033,-70.47244939999999 -33.4747022,-70.4742519 -33.4731987,-70.4764835 -33.4707644,-70.4779426 -33.4687597,-70.4800025 -33.46704129999999,-70.4822341 -33.4653229,-70.4841224 -33.463676,-70.4859715 -33.4628224,-70.4870873 -33.45945689999999,-70.48871809999999 -33.456521,-70.4906246 -33.4546496,-70.4916363 -33.4536566,-70.4939537 -33.4516515,-70.4955845 -33.450792099999994,-70.4949837 -33.4485004,-70.4949837 -33.4478201,-70.4952412 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最后我可以添加一些我的数据库的相关信息。我使用 postgres 适配器，列的类型是 geometry(Polygon,4326).
我哪里不见了？ ._.
poligon2 列的类型是什么？ 也许您尝试保存的数据对于您的列类型而言太长（9k 个字符）。
终于找到错误了... 就在这里：
-70.4337852 -33.48014739999999,
-70.4337852 -33.48014739999999
我的多边形的最后两个点相同。 postgis 将该多边形保存为空白寄存器._.
非常感谢大家！ :)