# `MishkaCmsCore.Accounts.Calculations.ByMaster`
[🔗](https://github.com/mishka-group/mishka_cms_core/blob/v0.0.1/lib/mishka_cms_core/accounts/__calculations/by_master.ex#L5)

Whether the account a record names is a master's, for every record in one read.

`:field` names the attribute holding the user id:

    calculate :author_master?, :boolean,
              {MishkaCmsCore.Accounts.Calculations.ByMaster, field: :author_id}

Load it beside the account relationship and pass both to `MishkaCmsCore.Accounts.Helper.who/4`.
A record with no id in `:field` is `false`.

# `describe`

# `has_calculate?`

# `has_expression?`

# `strict_loads?`

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*Consult [api-reference.md](api-reference.md) for complete listing*