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Magento2 Open Popup With Content From Block

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 Magento2 have a in-build UI component to display pop-up from your phtml file.



First we will check how to display any static content in popup from any phtml file.

1. Static Content in Pop-up

In your .phtml file write below code:

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<div id="your_popup_container" style="display:none">
    <div class="message-error error message">
    <p>Your content</p>
    </div>
</div>
In your javascript file add below code: 
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    require(
    [
        'jquery',
        'Magento_Ui/js/modal/modal'
    ],
    function(
        $,
        modal
    ) {
        var options = {
            'type': 'popup',
            'title': 'your popup title',
            'modalClass': 'your_popup_custom_class',
            'responsive': true,
            'innerScroll': true
            'buttons': [{
                text: $.mage.__('Close'),
                class: 'back_button_class',
                click: function () {
                    this.closeModal();
                    // any javascript coode
                }
            }]
        };
 
        $(document).ready(function(){
            var popup = modal(options, $('#your_popup_container'));
            $('.your-click-handler').on('click', function(event){
                    $("#your_popup_container").modal("openModal");
            })
        });
    }
);

With this you can display static content in popup.
Now read below content, if you want to display dynamic content in popup modal.

2. Dynamic Content in Pop-up

Let's start by creating custom extension.

Find the complete module on Github

Create your extension folder inside app/code/Magelearn/PopupBlock

Add registration.php file in it:
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<?php
/**
 * Copyright ©  All rights reserved.
 * See COPYING.txt for license details.
 */
use Magento\Framework\Component\ComponentRegistrar;
  
ComponentRegistrar::register(ComponentRegistrar::MODULE, 'Magelearn_PopupBlock', __DIR__);
Add composer.json file in it:
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{
    "name": "magelearn/popupblock",
    "description": "Magento 2 Display Popup with content defined from your custom block.",
    "type": "magento2-module",
    "license": "OSL-3.0",
    "authors": [
        {
            "email": "vijaymrami@gmail.com",
            "name": "vijay rami"
        }
    ],
    "minimum-stability": "dev",
    "require": {},
    "autoload": {
        "files": [
            "registration.php"
        ],
        "psr-4": {
            "Magelearn\\PopupBlock\\": ""
        }
    }
}
Add etc/module.xml file in it:
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<?xml version="1.0" ?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:Module/etc/module.xsd">
    <module name="Magelearn_PopupBlock" setup_version="1.0.0">
    </module>
</config>
Create your layout default.xml file inside view/frontend/layout/
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<?xml version="1.0"?>
<page xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
      xsi:noNamespaceSchemaLocation="urn:magento:framework:View/Layout/etc/page_configuration.xsd">
    <body>
        <referenceContainer name="content">
            <block class="Magelearn\PopupBlock\Block\ModalOverlay"
                   template="Magelearn_PopupBlock::modal_overlay.phtml"
                   name="modalOverlay"
                   as="modalOverlay"/>
        </referenceContainer>
    </body>
</page>

Create your template modal_overlay.phtml file inside view/frontend/templates/

You need to create your custom block from admin and need to pass block_id in line no. 1

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<?php if ($content = $block->getContent('modal_overlay_block')) { ?>
 
<div id="modal-overlay" style="display:none;">
    <?php echo $content; ?>
</div>
<script type="text/x-magento-init">
    {
        "*": {
            "Magento_Ui/js/core/app": {
                "components": {
                    "modal_overlay": {
                        "component": "Magelearn_PopupBlock/js/modal_overlay"
                    }
                }
            }
        }
    }
</script>
<?php } ?>
Create JS file modal_overlay.js inside view/frontend/web/js/
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define([
    'uiComponent',
    'jquery',
    'Magento_Ui/js/modal/modal',
    'Magento_Customer/js/customer-data'
], function (Component, $, modal, storage) {
    'use strict';
 
    var cacheKey = 'modal-overlay';
 
    var getData = function () {
        return storage.get(cacheKey)();
    };
 
    var saveData = function (data) {
        storage.set(cacheKey, data);
    };
 
    if ($.isEmptyObject(getData())) { //Check to see if an object is empty
        var modal_overlay = {
            'modal_overlay': false
        };
        saveData(modal_overlay);
    }
 
    return Component.extend({
 
        initialize: function () {
 
            this._super();
            var options = {
                type: 'popup',
                responsive: true,
                innerScroll: false,
                title: false,
                buttons: false
            };
 
            var modal_overlay_element = $('#modal-overlay');
            var popup = modal(options, modal_overlay_element);
 
            modal_overlay_element.css("display", "block");
 
            this.openModalOverlayModal();
 
        },
 
        openModalOverlayModal:function(){
            var modalContainer = $("#modal-overlay");
 
            if(this.getModalOverlay()) {
               return false;
            }
            this.setModalOverlay(true);
            modalContainer.modal('openModal');
        },
 
        setModalOverlay: function (data) {
            var obj = getData();
            obj.modal_overlay = data;
            saveData(obj);
        },
 
        getModalOverlay: function () {
            return getData().modal_overlay;
        }
 
    });
});
Create your block file ModalOverlay.php file inside Block/
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<?php
namespace Magelearn\PopupBlock\Block;
 
use Magento\Cms\Api\BlockRepositoryInterface;
use Magento\Cms\Api\Data\BlockInterface;
use Magento\Framework\Exception\LocalizedException;
use Magento\Framework\View\Element\Template;
use Magento\Framework\View\Element\Template\Context;
 
class ModalOverlay extends Template
{
 
    private $blockRepository;
 
    public function __construct(
        BlockRepositoryInterface $blockRepository,
        Context $context,
        array $data = []
    ) {
        $this->blockRepository = $blockRepository;
 
        parent::__construct($context, $data);
    }
 
    public function getContent($identifier)
    {
        try {
            /** @var BlockInterface $block */
            $block = $this->blockRepository->getById($identifier);
            $content = $block->getContent();
        } catch (LocalizedException $e) {
            $content = false;
        }
 
        return $content;
    }
}

After adding this code. Run magento command and then check your home page.



Popup will be display as per content defined in your custom block.

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