32 lines
884 B
Go
32 lines
884 B
Go
package cart
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import (
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"fmt"
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messages "git.k6n.net/go-cart-actor/proto/cart"
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)
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// SetLineItemCustomFields sets/merges user-supplied custom input fields on an
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// existing cart line. It is the dict equivalent of LineItemMarking: keys in the
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// request are upserted; existing keys not present in the request are left
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// untouched. (Send an empty value to clear a single field at the API layer if
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// desired.)
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func SetLineItemCustomFields(grain *CartGrain, req *messages.SetLineItemCustomFields) error {
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for _, item := range grain.Items {
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if item.Id != req.Id {
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continue
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}
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if len(req.CustomFields) == 0 {
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return nil
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}
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if item.CustomFields == nil {
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item.CustomFields = make(map[string]string, len(req.CustomFields))
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}
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for k, v := range req.CustomFields {
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item.CustomFields[k] = v
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}
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return nil
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}
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return fmt.Errorf("item with ID %d not found", req.Id)
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}
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