I encountered a problem with iteration where the results appeared perfectly fine, but upon rendering at the component level, the same field loaded with the last object instead

Question

I encountered a problem with iteration where the results appeared perfectly fine, but upon rendering at the component level, the same field loaded with the last object instead

I am facing an issue with rendering the component level when it loads. After clicking on edit and calling the edit function, the data is properly loaded in console and all objects are shown. However, they do not render on the page level.

Below is the code snippet:

const handleEdit = async () => {
    const { searchBrand } = await searchBrandAPI({ id });
    searchBrand[0].translations.forEach(arrVal => {
        console.log(arrVal, 'arrVal');
        setDynamicValues([ ...dynamicValues, {
                transLanguage: { label: arrVal.language, value: arrVal.languauge },
                transName: arrVal.name,
                transIsActive: { label: formatFirstCharUpperCase(arrVal.isActive, String), value: arrVal.isActive },
        }]);
    }); 
    const strIsActive = { label: formatFirstCharUpperCase(searchBrand[0].isActive, String), value: searchBrand[0].isActive }
    setValues({ name: searchBrand[0].name, isActive: strIsActive })
}

javascript arrays next.js use-state

Answer 1

Answer №1

This is how I managed to resolve the issue.

const handleEdit = async () => {
    const { searchBrand } = await searchBrandAPI({ id });
    const transData = [];
    searchBrand[0].translations.forEach(arrVal => {
        transData.push({
            transLanguage: { label: arrVal.language, value: arrVal.languauge },
            transName: arrVal.name,
            transIsActive: { label: formatFirstCharUpperCase(arrVal.isActive, String), value: arrVal.isActive },
        });
    });
    setDynamicValues(transData);
    const strIsActive = { label: formatFirstCharUpperCase(searchBrand[0].isActive, String), value: searchBrand[0].isActive }
    setValues({ name: searchBrand[0].name, isActive: strIsActive })
}

I am questioning whether this approach is correct. I attempted using memo and callback but encountered the same issue where only the last record was being displayed despite console logs showing the data correctly! Can anyone confirm if this solution is appropriate or suggest a more efficient method?

Answer 2

This is how I managed to resolve the issue.

const handleEdit = async () => {
    const { searchBrand } = await searchBrandAPI({ id });
    const transData = [];
    searchBrand[0].translations.forEach(arrVal => {
        transData.push({
            transLanguage: { label: arrVal.language, value: arrVal.languauge },
            transName: arrVal.name,
            transIsActive: { label: formatFirstCharUpperCase(arrVal.isActive, String), value: arrVal.isActive },
        });
    });
    setDynamicValues(transData);
    const strIsActive = { label: formatFirstCharUpperCase(searchBrand[0].isActive, String), value: searchBrand[0].isActive }
    setValues({ name: searchBrand[0].name, isActive: strIsActive })
}

I am questioning whether this approach is correct. I attempted using memo and callback but encountered the same issue where only the last record was being displayed despite console logs showing the data correctly! Can anyone confirm if this solution is appropriate or suggest a more efficient method?

Answer 3

Answer №2

To ensure that you are always getting the most up-to-date value of the state, it is important to utilize the useState callback function for accessing the previous value.

const handleEdit = async () => {
  const { searchBrand } = await searchBrandAPI({ id });
  searchBrand[0].translations.forEach(arrVal => {
    console.log(arrVal, 'arrVal');
    setDynamicValues(prev => [ ...prev, {
      transLanguage: {
        label: arrVal.language,
        value: arrVal.languauge
      },
      transName: arrVal.name,
      transIsActive: {
        label: formatFirstCharUpperCase(arrVal.isActive, String),
        value: arrVal.isActive
      },
    }]);
  }); 
  const strIsActive = {
    label: formatFirstCharUpperCase(searchBrand[0].isActive, String),
    value: searchBrand[0].isActive
  }
  setValues({ name: searchBrand[0].name, isActive: strIsActive })
}

Since setState operates asynchronously, the value of dynamicValues may not update immediately after calling setDynamicValues.

Answer 4

To ensure that you are always getting the most up-to-date value of the state, it is important to utilize the useState callback function for accessing the previous value.

const handleEdit = async () => {
  const { searchBrand } = await searchBrandAPI({ id });
  searchBrand[0].translations.forEach(arrVal => {
    console.log(arrVal, 'arrVal');
    setDynamicValues(prev => [ ...prev, {
      transLanguage: {
        label: arrVal.language,
        value: arrVal.languauge
      },
      transName: arrVal.name,
      transIsActive: {
        label: formatFirstCharUpperCase(arrVal.isActive, String),
        value: arrVal.isActive
      },
    }]);
  }); 
  const strIsActive = {
    label: formatFirstCharUpperCase(searchBrand[0].isActive, String),
    value: searchBrand[0].isActive
  }
  setValues({ name: searchBrand[0].name, isActive: strIsActive })
}

Since setState operates asynchronously, the value of dynamicValues may not update immediately after calling setDynamicValues.

I encountered a problem with iteration where the results appeared perfectly fine, but upon rendering at the component level, the same field loaded with the last object instead

Answer №1

Answer №2

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