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Troubleshooting Retrieving "_id" Field Value in Go with mgo
This article addresses the issue of failing to retrieve the "_id" field value when using mgo with Go. The problem was encountered when attempting to fetch data from a MongoDB database.
Firstly, the code snippet defines a struct named "Article" which represents a document in the database. It contains fields such as "_id", "title", "author", and others.
The "AllArticles()" function retrieves all articles from the database and stores them in the "articles" slice. When printing the results, the "_id" field is observed to be an empty string.
To resolve this issue, it was discovered that there was a spacing issue in the struct definition. The code originally had a tab between "json:" and "bson:", but it should have been a space instead.
The corrected code is:
type Article struct { Id bson.ObjectId `json:"id" bson:"_id,omitempty"`
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