Pagination 관련

What’s new in React Table v7?

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The latest version of React Table, react-table v7, provides a modern, Hooks-based API that helps us create tables in React with little hassle.

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What’s new in React Table v7?

The latest version of React Table, react-table v7, provides a modern, Hooks-based API that helps us create tables in React with little hassle.

We can add pagination using the usePagination Hook, which is passed in as the argument for the useTable Hook.

The useTable Hook then returns a bunch of pagination-related variables that we used to track the pagination and navigate to different pages.

To make a simple table with pagination, we can write the following code:

import React from "react";
import { useTable, usePagination } from "react-table";

const firstNames = ["jane", "john", "alex"];
const lastName = ["smith", "jones"];

const data = Array(100)
  .fill()
  .map(a => ({
    firstName: firstNames[Math.floor(Math.random() * firstNames.length)],
    lastName: lastName[Math.floor(Math.random() * lastName.length)],
    age: Math.ceil(75 * Math.random())
  }));

const columns = [
  {
    Header: "Name",
    columns: [
      {
        Header: "First Name",
        accessor: "firstName"
      },
      {
        Header: "Last Name",
        accessor: "lastName"
      }
    ]
  },
  {
    Header: "Other Info",
    columns: [
      {
        Header: "Age",
        accessor: "age"
      }
    ]
  }
];

const Table = ({ columns, data }) => {
  const {
    getTableProps,
    getTableBodyProps,
    headerGroups,
    prepareRow,
    page,
    canPreviousPage,
    canNextPage,
    pageOptions,
    pageCount,
    gotoPage,
    nextPage,
    previousPage,
    setPageSize,
    state: { pageIndex, pageSize }
  } = useTable(
    {
      columns,
      data,
      initialState: { pageIndex: 0 }
    },
    usePagination
  );

  return (
    <>
      <table {...getTableProps()}>
        <thead>
          {headerGroups.map(headerGroup => (
            <tr {...headerGroup.getHeaderGroupProps()}>
              {headerGroup.headers.map(column => (
                <th {...column.getHeaderProps()}>{column.render("Header")}</th>
              ))}
            </tr>
          ))}
        </thead>
        <tbody {...getTableBodyProps()}>
          {page.map((row, i) => {
            prepareRow(row);
            return (
              <tr {...row.getRowProps()}>
                {row.cells.map(cell => {
                  return (
                    <td {...cell.getCellProps()}>{cell.render("Cell")}</td>
                  );
                })}
              </tr>
            );
          })}
        </tbody>
      </table>
      <div>
        <button onClick={() => gotoPage(0)} disabled={!canPreviousPage}>
          {"<<"}
        </button>{" "}
        <button onClick={() => previousPage()} disabled={!canPreviousPage}>
          {"<"}
        </button>{" "}
        <button onClick={() => nextPage()} disabled={!canNextPage}>
          {">"}
        </button>{" "}
        <button onClick={() => gotoPage(pageCount - 1)} disabled={!canNextPage}>
          {">>"}
        </button>{" "}
        <span>
          Page{" "}
          <strong>
            {pageIndex + 1} of {pageOptions.length}
          </strong>{" "}
        </span>
        <span>
          | Go to page:{" "}
          <input
            type="number"
            defaultValue={pageIndex + 1}
            onChange={e => {
              const page = e.target.value ? Number(e.target.value) - 1 : 0;
              gotoPage(page);
            }}
            style={{ width: "100px" }}
          />
        </span>{" "}
        <select
          value={pageSize}
          onChange={e => {
            setPageSize(Number(e.target.value));
          }}
        >
          {[10, 20, 30, 40, 50].map(pageSize => (
            <option key={pageSize} value={pageSize}>
              Show {pageSize}
            </option>
          ))}
        </select>
      </div>
    </>
  );
};

export default function App() {
  return (
    <div className="App">
      <Table columns={columns} data={data} />
    </div>
  );
}

In the code above, we generated 100 array entries with random names and pages of people. The headers are the same as the simple table example above.

In the Table component, we have:

const {
  getTableProps,
  getTableBodyProps,
  headerGroups,
  prepareRow,
  page,
  canPreviousPage,
  canNextPage,
  pageOptions,
  pageCount,
  gotoPage,
  nextPage,
  previousPage,
  setPageSize,
  state: { pageIndex, pageSize }
} = useTable(
  {
    columns,
    data,
    initialState: { pageIndex: 0 }
  },
  usePagination
);

With this, we can get various pieces of data we need for pagination, like pageSize to change the number of items displayed on each page.

canPreviousPage and canNextPage tell us whether we can move to the previous or next page respectively. pageCount has the total page count, and gotoPage is a function that lets us skip to the given page number. previousPage and nextPage are also functions that let us navigate to the given page.

They’re used in the following div to navigate between pages:

<div>
  <button onClick={() => gotoPage(0)} disabled={!canPreviousPage}>
    {"<<"}
  </button>{" "}
  <button onClick={() => previousPage()} disabled={!canPreviousPage}>
    {"<"}
  </button>{" "}
  <button onClick={() => nextPage()} disabled={!canNextPage}>
    {">"}
  </button>{" "}
  <button onClick={() => gotoPage(pageCount - 1)} disabled={!canNextPage}>
    {">>"}
  </button>{" "}
  <span>
    Page{" "}
    <strong>
      {pageIndex + 1} of {pageOptions.length}
    </strong>{" "}
  </span>
  <span>
    | Go to page:{" "}
    <input
      type="number"
      defaultValue={pageIndex + 1}
      onChange={e => {
        const page = e.target.value ? Number(e.target.value) - 1 : 0;
        gotoPage(page);
      }}
      style={{ width: "100px" }}
    />
  </span>{" "}
  <select
    value={pageSize}
    onChange={e => {
      setPageSize(Number(e.target.value));
    }}
  >
    {[10, 20, 30, 40, 50].map(pageSize => (
      <option key={pageSize} value={pageSize}>
        Show {pageSize}
      </option>
    ))}
  </select>
</div>

Then we get a table with the same columns as in the example above, but with pagination buttons added. We can also use the dropdown to change the size of each page.