Trigger function when form loading is complete

dead-brown · 2024-05-30T02:45:44.584Z

Is there a way to have a custom function fire once a form has finished loading? Specifically for the ant design hook of useForm?

K

kapa.ai•5/30/24, 2:45 AM

Hi @HypnoticMeat. I'm kapa.ai, your friendly support bot. I will try to answer your question by searching through the knowledge base.

K

kapa.ai•5/30/24, 2:45 AM

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To trigger a custom function once a form has finished loading using the Ant Design

useForm

useForm

hook in refine, you can utilize the

formLoading

formLoading

formLoading

formLoading state. The

formLoading

formLoading

formLoading

formLoading state is a boolean value that indicates the loading status of the form. By monitoring this state, you can execute your custom function when the form loading is complete.

Here is an example of how you can achieve this:

import React, { useEffect } from "react";
import { useForm } from "@refinedev/antd";

const MyComponent = () => {
    const { formLoading, formProps } = useForm({
        // your form configuration
    });

    useEffect(() => {
        if (!formLoading) {
            // Custom function to execute when form loading is complete
            myCustomFunction();
        }
    }, [formLoading]);

    const myCustomFunction = () => {
        console.log("Form loading is complete!");
        // Add your custom logic here
    };

    return (
        <form {...formProps}>
            {/* Your form fields */}
        </form>
    );
};

export default MyComponent;

import React, { useEffect } from "react";
import { useForm } from "@refinedev/antd";

const MyComponent = () => {
    const { formLoading, formProps } = useForm({
        // your form configuration
    });

    useEffect(() => {
        if (!formLoading) {
            // Custom function to execute when form loading is complete
            myCustomFunction();
        }
    }, [formLoading]);

    const myCustomFunction = () => {
        console.log("Form loading is complete!");
        // Add your custom logic here
    };

    return (
        <form {...formProps}>
            {/* Your form fields */}
        </form>
    );
};

export default MyComponent;

import React, { useEffect } from "react";
import { useForm } from "@refinedev/antd";

const MyComponent = () => {
    const { formLoading, formProps } = useForm({
        // your form configuration
    });

    useEffect(() => {
        if (!formLoading) {
            // Custom function to execute when form loading is complete
            myCustomFunction();
        }
    }, [formLoading]);

    const myCustomFunction = () => {
        console.log("Form loading is complete!");
        // Add your custom logic here
    };

    return (
        <form {...formProps}>
            {/* Your form fields */}
        </form>
    );
};

export default MyComponent;

import React, { useEffect } from "react";
import { useForm } from "@refinedev/antd";

const MyComponent = () => {
    const { formLoading, formProps } = useForm({
        // your form configuration
    });

    useEffect(() => {
        if (!formLoading) {
            // Custom function to execute when form loading is complete
            myCustomFunction();
        }
    }, [formLoading]);

    const myCustomFunction = () => {
        console.log("Form loading is complete!");
        // Add your custom logic here
    };

    return (
        <form {...formProps}>
            {/* Your form fields */}
        </form>
    );
};

export default MyComponent;

In this example, the

useEffect

useEffect

hook monitors the

formLoading

formLoading

formLoading

formLoading state. When

formLoading

formLoading

formLoading

formLoading changes to

false

false

, indicating that the form has finished loading, the

myCustomFunction

myCustomFunction

myCustomFunction

myCustomFunction is executed.

For more information on

formLoading

formLoading

formLoading

formLoading, you can refer to the documentation (https://refine.dev/docs/data/hooks/use-form#formloading).
----------------------
Note: you can ask me a follow up question by @ mentioning me again

----------------------

K

kapa.ai•5/30/24, 2:45 AM

@224018850419572736 kapa.ai is still learning and improving, please let us know how it did by reacting below

D

dead-brownOP•5/30/24, 2:47 AM

@kapa.ai but that will fire myCustomFunction every time the component re-renders once the form loading is complete. I want the function to fire only a single time, when the form first finishes loading to do some initial setup. But not fire subsequently when other state management functions are called post form load.

K

kapa.ai•5/30/24, 2:47 AM

Let me check the knowledge base for you. One moment!

K

kapa.ai•5/30/24, 2:48 AM

----------------------
To ensure that your custom function fires only once when the form first finishes loading, you can use a combination of the

useEffect

useEffect

hook and a state variable to track whether the function has already been executed. Here’s how you can do it:

import React, { useEffect, useState } from "react";
import { useForm } from "@refinedev/antd";

const MyComponent = () => {
    const { formLoading, formProps } = useForm({
        // your form configuration
    });
    const [hasLoaded, setHasLoaded] = useState(false);

    useEffect(() => {
        if (!formLoading && !hasLoaded) {
            // Custom function to execute when form loading is complete
            myCustomFunction();
            setHasLoaded(true); // Ensure the function only runs once
        }
    }, [formLoading, hasLoaded]);

    const myCustomFunction = () => {
        console.log("Form loading is complete!");
        // Add your custom logic here
    };

    return (
        <form {...formProps}>
            {/* Your form fields */}
        </form>
    );
};

export default MyComponent;

import React, { useEffect, useState } from "react";
import { useForm } from "@refinedev/antd";

const MyComponent = () => {
    const { formLoading, formProps } = useForm({
        // your form configuration
    });
    const [hasLoaded, setHasLoaded] = useState(false);

    useEffect(() => {
        if (!formLoading && !hasLoaded) {
            // Custom function to execute when form loading is complete
            myCustomFunction();
            setHasLoaded(true); // Ensure the function only runs once
        }
    }, [formLoading, hasLoaded]);

    const myCustomFunction = () => {
        console.log("Form loading is complete!");
        // Add your custom logic here
    };

    return (
        <form {...formProps}>
            {/* Your form fields */}
        </form>
    );
};

export default MyComponent;

import React, { useEffect, useState } from "react";
import { useForm } from "@refinedev/antd";

const MyComponent = () => {
    const { formLoading, formProps } = useForm({
        // your form configuration
    });
    const [hasLoaded, setHasLoaded] = useState(false);

    useEffect(() => {
        if (!formLoading && !hasLoaded) {
            // Custom function to execute when form loading is complete
            myCustomFunction();
            setHasLoaded(true); // Ensure the function only runs once
        }
    }, [formLoading, hasLoaded]);

    const myCustomFunction = () => {
        console.log("Form loading is complete!");
        // Add your custom logic here
    };

    return (
        <form {...formProps}>
            {/* Your form fields */}
        </form>
    );
};

export default MyComponent;

import React, { useEffect, useState } from "react";
import { useForm } from "@refinedev/antd";

const MyComponent = () => {
    const { formLoading, formProps } = useForm({
        // your form configuration
    });
    const [hasLoaded, setHasLoaded] = useState(false);

    useEffect(() => {
        if (!formLoading && !hasLoaded) {
            // Custom function to execute when form loading is complete
            myCustomFunction();
            setHasLoaded(true); // Ensure the function only runs once
        }
    }, [formLoading, hasLoaded]);

    const myCustomFunction = () => {
        console.log("Form loading is complete!");
        // Add your custom logic here
    };

    return (
        <form {...formProps}>
            {/* Your form fields */}
        </form>
    );
};

export default MyComponent;

In this example, the

useEffect

useEffect

hook checks both

formLoading

formLoading

formLoading

formLoading and

hasLoaded

hasLoaded

hasLoaded

hasLoaded. The custom function

myCustomFunction

myCustomFunction

myCustomFunction

myCustomFunction is called only if

formLoading

formLoading

formLoading

formLoading is

false

false

and

hasLoaded

hasLoaded

hasLoaded

hasLoaded is

false

false

. After the function is executed,

setHasLoaded(true)

setHasLoaded(true)

setHasLoaded(true)

setHasLoaded(true) ensures that the function will not run again on subsequent re-renders.

This approach ensures that your custom function is triggered only once when the form first finishes loading, and not on subsequent state changes or re-renders.
----------------------
Note: you can ask me a follow up question by @ mentioning me again

----------------------

K

kapa.ai•5/30/24, 2:48 AM

@224018850419572736 kapa.ai is still learning and improving, please let us know how it did by reacting below