• m29h@feddit.nl
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    1 year ago

    Why don’t you just set the id to whatever ( e.g UUID) you want in your struct constructor. Alternatively I guess there are also mongodb specific client libraries for Go

    The documentation of package mongo says for example ``` If the document does not have an _id field when transformed into BSON, one will be added automatically to the marshalled document.

    • noorneeOP
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      1 year ago

      Hello, Thanks for responding. ^^

      i didn’t want to make any changes to the id field.

      i have a user struct like this.

      type User struct {
      	ID         primitive.ObjectID `bson:"_id,omitempty" json:"id"`
      	FirstName  string             `bson:"firstname" json:"firstname"`
      	LastName   string             `bson:"lastname" json:"lastname"`
      	Email      string             `bson:"email" index:"email" json:"email"`
       }
      
      

      i wanted the Email field to be unique, just like the ID. so when a new user tries to create an account with the same email, it’ll return an error.

      it isn’t a problem anymore because i figured out a way… i created a custom struct tag that validates whether a user with the same email exist in the database.