add gov handler

modules/farm/handler.go

@@ -0,0 +1,30 @@
+package farm
+
+import (
+	errorsmod "cosmossdk.io/errors"
+	sdk "github.com/cosmos/cosmos-sdk/types"
+	sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
+	govtypes "github.com/cosmos/cosmos-sdk/x/gov/types/v1beta1"
+
+	"mods.irisnet.org/modules/farm/keeper"
+	"mods.irisnet.org/modules/farm/types"
+)
+
+// NewProposalHandler returns a handler function for processing farm proposals.
+//
+// It takes in a context and a content interface and returns an error.
+func NewProposalHandler(k keeper.Keeper) govtypes.Handler {
+	return func(ctx sdk.Context, content govtypes.Content) error {
+		switch c := content.(type) {
+		case *types.CommunityPoolCreateFarmProposal:
+			return handleCreateFarmProposal(ctx, k, c)
+		default:
+			return errorsmod.Wrapf(sdkerrors.ErrUnknownRequest, "unrecognized farm proposal content type: %T", c)
+		}
+	}
+}
+
+
+func handleCreateFarmProposal(ctx sdk.Context, k keeper.Keeper, p *types.CommunityPoolCreateFarmProposal) error {
+	return k.HandleCreateFarmProposal(ctx, p)
+}