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#blog_snippets
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| def validate(changeset) do | |
| changeset | |
| |> validate_required([:revenue, :expense, :net_gain]) | |
| |> mathematical_validation() | |
| |> validate_format(:reference_id, ~r/(^\d+$|\p{L})/u, | |
| message: "must be a number or contain a letter" | |
| ) | |
| end |
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