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Do not raise on unsuccessful cast #156

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merged 5 commits into from
Apr 30, 2024
Merged

Do not raise on unsuccessful cast #156

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290ab06
Do not raise on unsuccessful cast
marmor157 Mar 22, 2023
5124c88
Fix binary casting
marmor157 Mar 22, 2023
43c3ca0
Update lib/geo_postgis/geometry.ex
marmor157 Apr 29, 2024
e9a0eb3
Return error from `Geo.JSON.decode/1`
marmor157 Apr 30, 2024
57fb90f
Group `cast/1` together
marmor157 Apr 30, 2024
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20 changes: 17 additions & 3 deletions lib/geo_postgis/geometry.ex
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Original file line number Diff line number Diff line change
Expand Up @@ -78,19 +78,33 @@ if Code.ensure_loaded?(Ecto.Type) do
def cast(%struct{} = geom) when struct in @geometries, do: {:ok, geom}

def cast(%{"type" => type, "coordinates" => _} = geom) when type in @types do
{:ok, Geo.JSON.decode!(geom)}
do_cast(geom)
end

def cast(%{"type" => "GeometryCollection", "geometries" => _} = geom) do
{:ok, Geo.JSON.decode!(geom)}
do_cast(geom)
end

def cast(geom) when is_binary(geom) do
{:ok, geom |> Geo.PostGIS.Config.json_library().decode!() |> Geo.JSON.decode!()}
do_cast(geom)
end

def cast(_), do: :error

defp do_cast(geom) when is_binary(geom) do
case Geo.PostGIS.Config.json_library().decode(geom) do
{:ok, geom} when is_map(geom) -> do_cast(geom)
{:error, reason} -> {:error, [message: "failed to decode JSON", reason: reason]}
end
end

defp do_cast(geom) do
case Geo.JSON.decode(geom) do
{:ok, result} -> {:ok, result}
{:error, reason} -> {:error, [message: "failed to decode GeoJSON", reason: reason]}
end
end

def embed_as(_), do: :self

def equal?(a, b), do: a == b
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