React Multi Search

A react hook to filter data based on multiple search queries.

Features

• 🗃️ Support for various data types
• 📈 Range queries for numbers and dates
• 📜 Search suggestions
• 📊 Support for categorized data
• ✨ Headless, bring your own UI
• 🌐 TypeScript support

Supported data types

• String
  • Can be case-sensitive or case-insensitive (default).
  • Exact matches can be done by enclosing the query in double quotes.
  • Can come with search suggestions, which is the aggregated possible values for a specific field.
• Boolean
  • Support for various truthy and falsy queries (true, yes, 1, etc.) or provide your own.
• Number
  • Support for range queries with operators: >, >=, <, <=, and !=.
• Date
  • Support for range queries with operators like numbers.
  • Time and timezone are ignored.

Other data types will be treated as strings.

Demo

To see the hook in action, you can check the Storybook demo.

Installation

npm:

npm i react-multi-search

yarn:

yarn add react-multi-search

Usage

import { useState } from 'react';
import { useMultiSearch } from 'react-multi-search';

const MyComponent = () => {
  const initialData = [
    { name: 'John Doe', age: 20, gender: 'Male' },
    { name: 'Jane Doe', age: 25, gender: 'Female' },
    // ...
  ];

  const [filteredData, setFilteredData] = useState([]);

  const {
    states: {
      searchString,
      searchField,
      searchSuggestions,
      searchQueries,
      isMenuOpen,
      shownMenu,
    },
    actions: {
      clearInput,
      addSearchQuery,
      deleteSearchQuery,
      deleteAllSearchQueries,
      onMenuKeyDown,
      onSearchFieldSelect,
      onAllSearchFieldSelect,
      onSearchSuggestionSelect,
      openMenu,
    },
    inputProps,
    anchorRef,
    listRef,
  } = useMultiSearch({
    initialData,
    setFilteredData,
    fields: [
      { value: 'name', label: 'Name' },
      { value: 'age', label: 'Age' },
      { value: 'gender', label: 'Gender', showSearchSuggestions: true },
    ],
  });

  return (
    <>
      {/* search bar ------------------------------------------------------- */}
      <div ref={anchorRef}>
        <button onClick={openMenu}>{searchField.label || 'All'}</button>
        <input {...inputProps} />
        <button onClick={clearInput}>Clear</button>
        <button onClick={addSearchQuery}>Add</button>
      </div>

      {/* search queries --------------------------------------------------- */}
      <ul
        style={{
          listStyle: 'none',
          padding: 0,
        }}
      >
        {searchQueries.map((query, index) => (
          <li key={index}>
            <span>
              {query.field === '_default'
                ? query.value
                : `${query.fieldLabel}: ${query.value}`}
            </span>
            <button onClick={() => deleteSearchQuery(index)}>Remove</button>
          </li>
        ))}
      </ul>
      <button onClick={deleteAllSearchQueries}>Clear all queries</button>

      {/* dropdown menu ---------------------------------------------------- */}
      {isMenuOpen && (
        <div>
          <ul ref={listRef} onKeyDown={onMenuKeyDown}>
            {shownMenu === 'fields' && (
              <>
                <li>Search by:</li>
                <li>
                  <button
                    onClick={onAllSearchFieldSelect}
                    disabled={searchField.value === '_default'}
                  >
                    All
                  </button>
                </li>
                {...props.fields.map((field) => (
                  <li key={field.value as string}>
                    <button
                      onClick={() => onSearchFieldSelect(field)}
                      disabled={searchField.value === field.value}
                    >
                      {field.label}
                    </button>
                  </li>
                ))}
              </>
            )}
            {shownMenu === 'searchSuggestions' && (
              <>
                <li>Search suggestions:</li>
                {searchSuggestions?.map(
                  (value) => (
                    <li key={value}>
                      <button onClick={() => onSearchSuggestionSelect(value)}>
                        {value}
                      </button>
                    </li>
                  )
                ) ?? <li>No suggestions</li>}
              </>
            )}
          </ul>
        </div>
      )}

      {/* ... */}
    </>
  );
};

See the demo code for a more comprehensive example.

API

Options

• initialData (required)

  • T[]
  • The initial data to filter. This should be an array of objects without categorization. If you want to categorize your data, use the separate categorizer function.

• setFilteredData (required)

  • Dispatch<SetStateAction<T[]>> | Dispatch<SetStateAction<Record<string, T[]>>>
  • setState function to update the filtered data.
  • Since this is a headless hook, the filtered data should be managed by the consuming component for reusability.

• fields (required)

  • (FieldWithSuggestions<T> | FieldWithoutSuggestions<T>)[]
  • The fields to search in. Each item in the array can be of type FieldWithSuggestions<T> where all keys should have the value of type string or boolean, or FieldWithoutSuggestions<T> for other data types.

• categorizer

  • (data: T[]) => Record<string, (T | Record<string, unknown>)[]>
  • Function to categorize and group the filtered data.
  • This is separated from initialData to optimize performance when filtering.

• showEmptyCategories

  • boolean
  • Defaults to false.
  • Show categories that have no items.
  • This is only used when categorizer is provided.

• shouldInitialize

  • boolean
  • Defaults to true.
  • Control whether the hook should initialize or not.
  • This is useful when you want to delay the initialization of the hook until the data is ready.

• caseSensitive

  • boolean
  • Defaults to false.
  • Whether the comparison should be case-sensitive or not.

• trueLabel

  • string
  • Defaults to Yes.
  • The label for true value on search suggestions.

• falseLabel

  • string
  • Defaults to No.
  • The label for false value on search suggestions.

• truthyValues

  • string[]
  • Defaults to ['true', '1', 'on', 'yes', 'y', 't', '✓']
  • A list of truthy values to match against boolean values.

• falsyValues

  • string[]
  • Defaults to ['false', '0', 'off', 'no', 'n', 'f', 'x']
  • A list of falsy values to match against boolean values.

Field Options

• fields[number].value (required)

  • { [K in keyof T]: T[K] extends string | boolean ? K : never; }[keyof T] for FieldWithSuggestions<T>
  • { [K in keyof T]: T[K] extends string | boolean ? never : K; }[keyof T] for FieldWithoutSuggestions<T>
  • The field to search.

• fields[number].label (required)

  • string
  • The label for the field.

• fields[number].showSearchSuggestions

  • boolean (default: false)
  • Show search suggestions for this field.
  • This only applies to FieldWithoutSuggestions

• fields[number].strictSuggestions

  • boolean (default: false)
  • Enclose suggestions in double quotes to treat as exact match.
  • This only applies to FieldWithoutSuggestions

Return Value

• states - Usable states for the search filter.

  • searchString

    • string
    • The current search string.

  • searchField

    • string[]
    • Selected field to search.

  • searchSuggestions

    • FieldWithSuggestions<T> | FieldWithoutSuggestions<T> | { value: '_default'; label: ''; }
    • Search suggestions for the selected field.

  • searchQueries

    • SearchQuery<T>[]
    • Current search queries.

  • isMenuOpen

    • boolean
    • Dropdown menu open state.

  • shownMenu

    • 'fields' | 'searchSuggestions'
    • The type of dropdown menu currently shown.

  • isFiltered

    • boolean
    • Whether the data is filtered or not.

  • isInitialized

    • boolean
    • Whether the hook is initialized or not.

• actions - Actions to interact with the search filter.

  • clearInput

    • () => void
    • Clear the search input.

  • addSearchQuery

    • () => void
    • Trigger to add the current search string and field as a search query.

  • deleteSearchQuery

    • (idx: number) => void
    • Delete a search query by index.

  • deleteAllSearchQueries

    • () => void
    • Delete all search queries.

  • onMenuKeyDown

    • (e: KeyboardEvent<HTMLUListElement>) => void
    • Event handler to handle key down events on the menu.

  • onSearchFieldSelect

    • (field: FieldWithSuggestions<T> | FieldWithoutSuggestions<T> | { value: '_default'; label: ''; }) => void
    • Event handler to handle field selection.

  • onAllSearchFieldSelect

    • () => void
    • Event handler to handle "All" field selection.

  • onSearchSuggestionSelect

    • (value: string) => void
    • Event handler to handle search suggestion selection.

  • openMenu

    • () => void
    • Open the dropdown menu.

  • closeMenu

    • () => void
    • Close the dropdown menu.

• inputProps - Props passed to the input element (search bar).

  • onChange

    • (e: ChangeEvent<HTMLInputElement>) => void
    • Event handler to handle input change.

  • onKeyDown

    • (e: KeyboardEvent<HTMLInputElement>) => void
    • Event handler to handle key down events on the input.
    • Includes handling various keys: Enter, Escape, Backspace, ArrowDown, and field selection (:).

  • onPaste

    • (e: ClipboardEvent<HTMLInputElement>) => void
    • Event handler to handle paste events on the input.
    • Primarily for separating search field and string.

  • onFocus

    • () => void
    • Event handler to handle focus events on the input.
    • Used for opening the dropdown menu.

  • onBlur

    • () => void
    • Event handler to handle blur events on the input.

  • value

    • string
    • Same as searchString.

  • ref

    • RefObject<HTMLInputElement>
    • Ref forwarded to the input element.

• anchorRef - Ref forwarded to the anchor element (search bar wrapper).

• listRef - Ref forwarded to the dropdown menu list element (ul).

Search Query

• field

  • keyof T | '_default'
  • The field to search.

• fieldLabel

  • string
  • The label to display.

• value

  • string
  • Query string to match.

Contributing

Contributions are welcome! Feel free to open an issue or submit a pull request.

Before submitting a pull request, please make sure to test your changes and update the documentation if necessary.

License

This project is licensed under the MIT License