C#•2y ago

✅ How Do I Save a New Fully Defined Relationship in EF Core?

Ok, so if I have a token which looks like this

/// <summary>
/// Represents a token for a device
/// </summary>
public class Token
{
    /// <summary>
    /// The actual token
    /// </summary>
    public required string TokenId { get; set; }
    /// <summary>
    /// The user the token belongs to
    /// </summary>
    public required User User { get; set; }
}

/// <summary>
/// Represents a token for a device
/// </summary>
public class Token
{
    /// <summary>
    /// The actual token
    /// </summary>
    public required string TokenId { get; set; }
    /// <summary>
    /// The user the token belongs to
    /// </summary>
    public required User User { get; set; }
}

and I have a user

public class User
{
    public required string UserId { get; set; }
    public required List<Token> Tokens { get; set; }
}

public class User
{
    public required string UserId { get; set; }
    public required List<Token> Tokens { get; set; }
}

How do I create a new token if the user doesn't exist?

13 Replies

Saber•2y ago

create the token and the user?

ballomanOP•2y ago

So when creating the token how do I define the user?

phaseshift•2y ago

Why is user property in token required?

ballomanOP•2y ago

Yeah good point maybe it’s not needed

Tvde1•2y ago

What have you tried so far? Should be as simple as adding the token instance to the user's token list and saving the context

ballomanOP•2y ago

I haven’t tried it yet I’ve been busy with work but if I add the token to the users token list how do I set the user on the token If the user didn’t previously exist

phaseshift•2y ago

Need to make a user first.

ballomanOP•2y ago

So when I make the user, then I just set the token list to empty?

phaseshift•2y ago

You don't need to set it to anything, but yes

ballomanOP•2y ago

It's required

phaseshift•2y ago

Making navigation properties required does not seem like a good idea to me I'm not sure how modern EF Core deals with it, though

ballomanOP•2y ago

So it ended up working fine by setting the list to empty

Accord•2y ago

Was this issue resolved? If so, run /close - otherwise I will mark this as stale and this post will be archived until there is new activity.

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✅ How Do I Save a New Fully Defined Relationship in EF Core?