像我五岁一样解释:带文字和图像字段的表格>路线>控制器>写入MongoDB文档-GridFS去哪里了? [英] Explain Like I'm Five: Form w/ Text and Image Field > Routes > Controller > Write to MongoDB Document - GridFS goes where?

问题描述

一段时间以来，我一直在尝试阅读GridFS和MongoDB的文档.他们只是不断重复同样的事情，而我对此一无所知.

I have been trying to read the documentation for GridFS and MongoDB for awhile. They just keep repeating the same thing and I can't make sense of it.

所需的输出:用户提交的表单包含许多字段，但其中一个是图像.该请求需要将数据存储在集合中并创建一个新文档，以便以后检索.我的主要问题是在这种情况下如何使用GridFS将图像存储在该文档中.

Desired Output: The user submits a form that form contains many fields, but one is an image. The request needs to store the data in a collection and make a new document, which can be retrieved later. My main question is how do I use GridFS in this situation to store an image in that document.

它说GridFS在我的数据库文件和块中创建了两个集合.那么这些集合与我的另一个具有其他表单数据的集合有什么关系?

It says GridFS makes two collections in my database files and chunks. So how do those collections relate to my other collection which has the other form data?

我假定对这些文件和chuck集合的引用，但是，我对此毫无意义.已经过了几天，我觉得是时候联系我的StackOverflow社区了.

I assume a reference to these files and chucks collection, however, I can't make any sense of this. It's been a few days and I feel like it's time to reach out to my StackOverflow community.

有人可以向我说明程序流程和关键点，以说明我如何实现使用gridfs将图像存储在文档中的目标吗?

GridFS到处都有提及，并且似乎很流行，但我无法理解.这些完全混乱的时刻通常会带来突破，所以我渴望向退伍军人和专家学习.

GridFS is mentioned everywhere and seems to be popular but I can't make sense of it. These moments of utter confusion usually result in a breakthrough, so I'm eager to learn from veterans and experts.

推荐答案

GridFS集合是GridFS的内部实现细节.它们与您的其他数据之间没有链接.

GridFS collections are internal implementation detail of GridFS. There is no linking between them and your other data.

要写入GridFS和从中读取数据，您将使用驱动程序提供的GridFS API.通常，这意味着，例如，如果要保存某些字段和类似于图像的二进制Blob，则将分两步执行保存(对字段执行一次插入/更新操作，对二进制Blob执行单独的GridFS操作)./p>

To write to and read from GridFS, you would use GridFS APIs provided by your driver. Generally this means that, if you are saving for example some fields and a binary blob like an image, you would perform the save in two steps (one insert/update operation for the fields and a separate GridFS operation for the binary blob).

有人可以向我解释程序流程和关键点，以了解如何实现使用gridfs将图像存储在文档中的目标吗?

Can someone please explain to me the program flow and key points for how I can achieve my goal of storing an image in a document using gridfs?

您不会将图像存储在文档中.您将图像存储在GridFS 中，并且在您的文档中可以包含对GridFS文件的引用(它们具有自己的ID).

You wouldn't store the image in your document. You would store the image in GridFS, and in your document you could include a reference to the GridFS file (those have their own ids).

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