eager-peach
eager-peach4mo ago

useSelect defaultValue is not populating

useSelect defaultValue is not populating
2 Replies
kapa.ai
kapa.ai4mo ago
Hi @japope. I'm kapa.ai, your friendly support bot. I will try to answer your question by searching through the knowledge base. :wave: ---------------------- The defaultValue property in the useSelect hook allows you to set default options for a <select> component. However, if there are many entries for the <select> and pagination is required, the defaultValue may not be present in the current visible options, which can cause the <select> component to malfunction. To avoid this, a separate useMany query is sent to the backend with the defaultValue and appended to the options of <select>, ensuring the default values exist in the current options array. The defaultValue can be a single value or an array of values. Here's an example:
useSelect({
defaultValue: 1, // or [1, 2]
});
useSelect({
defaultValue: 1, // or [1, 2]
});
If you only have an id and need to show it selected in the selection box, you can use the useMany hook to send a request, get the data, and mark it as selected. Here's an example:
import { useSelect } from "@refinedev/core";

interface ICategory {
id: number;
title: string;
}

const ProductCreate: React.FC = () => {
const { options } = useSelect<ICategory>({
resource: "categories",
defaultValue: 20,
});

return (
<label>
Select a category:
<select>
{options?.map((option) => (
<option key={option.value} value={option.value}>
{option.value}-{option.label}
</option>
))}
</select>
</label>
);
};
import { useSelect } from "@refinedev/core";

interface ICategory {
id: number;
title: string;
}

const ProductCreate: React.FC = () => {
const { options } = useSelect<ICategory>({
resource: "categories",
defaultValue: 20,
});

return (
<label>
Select a category:
<select>
{options?.map((option) => (
<option key={option.value} value={option.value}>
{option.value}-{option.label}
</option>
))}
</select>
</label>
);
};
For more information, refer to the useMany documentation (https://refine.dev/docs/data/hooks/use-many/) and the useSelect documentation (https://refine.dev/docs/data/hooks/use-select#defaultvalue). ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ----------------------
kapa.ai
kapa.ai4mo ago
<@465923409973477386> kapa.ai is still learning and improving, please let us know how it did by reacting below