Author

Name	Email
Rolandas Gedgaudas - T.	rolandas.gt@gmail.com

Preview

You can view deployed app on netlify here.

App description

This project is a Reactjs app bootstrapped with Create React App version 16.9.0, that means app has functional components. App uses API provided by date.nager.at for fetching the data.

App functionalities:

• Displays a list of all available countries
• Filters the available countries list based on an input field

Folder Structure

└── src
    ├── api
    │   ├── countriesData.js
    ├── components
    │   ├── Country.css
    │   ├── Country.js
    │   ├── FilterCountryForm.css
    │   └── FilterCountryForm.js
    ├── images
    │   ├── bg01a.jpg
    │   ├── bg02.jpg
    │   ├── grundfoslogo.png
    │   └── user-icon.pmg
    ├── App.css
    ├── App.js
    ├── index.css
    └── index.js

countriesData.js file exports a function useFetch which is used in the Country.js component to get available countries from the API as json array.

function useFetch(url) {
    const [data, setData] = useState([]);
    const [loading, setLoading] = useState(true);

    useEffect(() => {
        const fetchUrl = async () => {
            let response = await axios.get(url, {
                method: 'GET',
                mode: 'no-cors',
                headers: {
                    'Access-Contro-Alow-Origin': '*',
                    'Content-Type': 'application/json'
                }
            }).catch(function (error) {
                console.log(error);
            });
            setData(response.data);
            setLoading(false);
        }
        fetchUrl();
    }, [url]);
    return [data, loading];
}

export {
    useFetch
};

Country.js component sorts the data alhabetically and if input has value filters data.

useEffect(() => {
    setCountries(data.sort(sortByProperty('value')));
    if (props.filterValue && props.filterValue !== '') {
        filterData();
    }
  }, [props, data, allCountriesUrl, suggestions]);

  var sortByProperty = function (property) {
    return function (x, y) {
        return ((x[property] === y[property]) ? 0 : ((x[property] > y[property]) ? 1 : -1));
      };
  };

FilterCountryForm.js is a componet which has an input form and sends value using props to the App.js where value as a prop is send to the Country.js component. Also reference is set to the input to focus when the page is loaded in the browser.

const inputValue = props.countryFilter
const countryNameInput = useRef(null);
  useEffect(() => {
    countryNameInput.current.focus();
  }, []);


<input
    className='col-12'
    placeholder='Enter country name'
    type='text'
    ref={countryNameInput}
    onChange={(e) => {inputValue(e, e.target.value)}}
/>

In the App.js component

const [filterValue, setFilterValue] = useState('');
const countryFilter = (e, value) =>{
    setFilterValue(value)
}
<FilterCountryForm countryFilter={countryFilter}/>
<Country filterValue={filterValue}/>

Input value is used to fiter data from json array.

const filterData = ()=> {
    if(props.filterValue.length > 0){ //if input value is not empty
      const suggestedCountries = data.filter((country) => { //filters data and assigns to new array

      // sets array item to lowercase then uses include function to check for the match
        return country.value.toLowerCase().includes (props.filterValue.toLowerCase()); // input is also is set to lowercase to eiminate case sensitivity.
      }
      );
      setCountries(suggestedCountries); // using useState filtered array is set.
      //if there is no match
      if (suggestedCountries.length === 0){
          // sets true to show message "no suggestions"
        setSuggestions(true);
      }else{
          // sets suggestions to false which makes empty message and available countries are shown
        setSuggestions(false);
      }
    }
  }

Data is rendered with render data function which maps countires state. It also checks the first letter of the country name and if letter has changed in the next letter in the aphabet it is assigned to the variabe which is shown in front of the country list relating to countries of the same letter.

const renderData = countries.map((item, index) => {
    if(firstLetter !== item.value.charAt(0)){
      firstLetter = item.value.charAt(0);
      letter = firstLetter;
      hr = true;
    }else{
      letter = '';
      hr = false;
    }
    return (
      <div key={index} className="country-name" >
        {hr ? (
         <>
          <hr></hr>
          <h2 className='letter'>{letter}</h2>
          <p className="country">{item.value}, {item.key}</p>
         </>
        ) : (
          <p className="country">{item.value}, {item.key}</p>
        )}
      </div>
    )
  });

Data fetching

Axios - Promise based HTTP client for the browser and node.js

Responsive design

Responsive web layout with bootstrap-4-grid

CSS

Pretty straightforward. Just get css/grid.min.css or css/grid.css and add it to your project.

How to install bootstrap-4-grid using npm

npm install bootstrap-4-grid

Available Scripts

In the project directory, you can run:

npm start

Runs the app in the development mode.
Open http://localhost:3000 to view it in the browser.

The page will reload if you make edits.
You will also see any lint errors in the console.

npm test

Launches the test runner in the interactive watch mode.
See the section about running tests for more information.

npm run build

Builds the app for production to the build folder.
It correctly bundles React in production mode and optimizes the build for the best performance.

The build is minified and the filenames include the hashes.
Your app is ready to be deployed!

See the section about deployment for more information.

npm run eject

Note: this is a one-way operation. Once you eject, you can’t go back!

If you aren’t satisfied with the build tool and configuration choices, you can eject at any time. This command will remove the single build dependency from your project.

Instead, it will copy all the configuration files and the transitive dependencies (Webpack, Babel, ESLint, etc) right into your project so you have full control over them. All of the commands except eject will still work, but they will point to the copied scripts so you can tweak them. At this point you’re on your own.

You don’t have to ever use eject. The curated feature set is suitable for small and middle deployments, and you shouldn’t feel obligated to use this feature. However we understand that this tool wouldn’t be useful if you couldn’t customize it when you are ready for it.

Learn More

You can learn more in the Create React App documentation.

To learn React, check out the React documentation.

Code Splitting

This section has moved here: https://facebook.github.io/create-react-app/docs/code-splitting

Analyzing the Bundle Size

This section has moved here: https://facebook.github.io/create-react-app/docs/analyzing-the-bundle-size

Making a Progressive Web App

This section has moved here: https://facebook.github.io/create-react-app/docs/making-a-progressive-web-app

Advanced Configuration

This section has moved here: https://facebook.github.io/create-react-app/docs/advanced-configuration

Deployment

This section has moved here: https://facebook.github.io/create-react-app/docs/deployment

npm run build fails to minify

This section has moved here: https://facebook.github.io/create-react-app/docs/troubleshooting#npm-run-build-fails-to-minify