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ultimate-pagination

Universal pagination model generation algorithm that can be used to build a UI component

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ultimate-pagination

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Universal pagination model generation algorithm that can be used to build a UI component for any JavaScript based platform/framework. The idea behind this module is to move the logic of creating pagination out of the component and place it in a separate module. It allows reusing the same code across different frameworks like Angular, Angular2, React, Ember, etc. Also, the same code can be used to generate pagination on server-side JavaScript frameworks.

Integrations

Here is a list of modules that uses ultimate-pagination to implement pagination components with different frameworks:

Installation

You can install this module via npm:

npm install ultimate-pagination --save

Usage

The main method of ultimate-pagination module is getPaginationModel(options). It accepts an object with properties:

  • currentPage (number) - current page number
  • totalPages (number) - total number of pages
  • boundaryPagesRange (number, optional, default: 1) - number of always visible pages at the beginning and end
  • siblingPagesRange (number, optional, default: 1) - number of always visible pages before and after the current one
  • hideEllipsis (boolean, optional, default: false) - boolean flag to hide ellipsis
  • hidePreviousAndNextPageLinks (boolean, optional, default: false) - boolean flag to hide previous and next page links
  • hideFirstAndLastPageLinks (boolean, optional, default: false) - boolean flag to hide first and last page links
var ultimatePagination = require('ultimate-pagination');

var paginationModel = ultimatePagination.getPaginationModel({
  // Required
  currentPage: 5,
  totalPages: 10,

  // Optional
  boundaryPagesRange: 1,
  siblingPagesRange: 1,
  hideEllipsis: false,
  hidePreviousAndNextPageLinks: false,
  hideFirstAndLastPageLinks: false
});

As a result getPaginationModel(options) returns an array of items that can be used to render a pagination component:

[
  {
    type: ITEM_TYPES.FIRST_PAGE_LINK,
    key: ITEM_KEYS.FIRST_PAGE_LINK,
    value: 1,
    isActive: false
  },
  {
    type: ITEM_TYPES.PREVIOUS_PAGE_LINK,
    key: ITEM_KEYS.PREVIOUS_PAGE_LINK,
    value: 4,
    isActive: false
  },
  {
    type: ITEM_TYPES.PAGE,
    key: 1,
    value: 1,
    isActive: false
  },
  {
    type: ITEM_TYPES.ELLIPSIS,
    key: ITEM_KEYS.FIRST_ELLIPSIS,
    value: 3,
    isActive: false
  },
  {
    type: ITEM_TYPES.PAGE,
    key: 4,
    value: 4,
    isActive: false
  },
  {
    type: ITEM_TYPES.PAGE,
    key: 5,
    value: 5,
    isActive: true
  },
  {
    type: ITEM_TYPES.PAGE,
    key: 6,
    value: 6,
    isActive: false
  },
  {
    type: ITEM_TYPES.ELLIPSIS,
    key: ITEM_KEYS.SECOND_ELLISPIS,
    value: 7,
    isActive: false
  },
  {
    type: ITEM_TYPES.PAGE,
    key: 10,
    value: 10,
    isActive: false
  },
  {
    type: ITEM_TYPES.NEXT_PAGE_LINK,
    key: ITEM_KEYS.NEXT_PAGE_LINK,
    value: 6,
    isActive: false
  },
  {
    type: ITEM_TYPES.LAST_PAGE_LINK,
    key: ITEM_KEYS.LAST_PAGE_LINK,
    value: 10,
    isActive: false
  }
]

In this example ITEM_TYPES and ITEM_KEYS can be imported from ultimate-pagination module, and they contain constants used in the output of the pagination model.

All item has the same structure:

  • type: string - type of item that can be one of ITEM_TYPES
  • key: number - unique number that can be used in libraries that need a key to render a collection of components (key in React, track by in Angular)
  • value: number - number of pages that user should navigate to when item is activated (for items with type PAGE it also can be used as a label in UI)
  • isActive: boolean - show if currentPage if the same as value of an item (can be used to highlight a current page or disable first, previous, next or last page links when user is already on first/last page)

Here is a list that contains all available ITEM_TYPES:

  • PAGE - a link to a page
  • ELLIPSIS - an item that represents groups of pages that currently are not visible in paginator (can be used to navigate to the page in the group that is the nearest to the current page)
  • FIRST_PAGE_LINK - a link to the first page
  • PREVIOUS_PAGE_LINK - a link to the previous page
  • NEXT_PAGE_LINK - a link to the next page
  • LAST_PAGE_LINK - a link to the last page

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Package last updated on 19 Feb 2017

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