Custom ezstring FieldType edit Template for a given ContentType(artcile) in ezplatform 2.x - for demo purpose

ContentTypeIdentifierForCreateView.php

<?php


namespace EzSystems\CustomizeAdminUIBundle\lib\Matcher\ContentBased\Identifier;


use eZ\Publish\API\Repository\Values\Content\ContentInfo;
use eZ\Publish\API\Repository\Values\Content\Location;
use eZ\Publish\Core\MVC\Symfony\Matcher\ContentBased\MultipleValued;
use eZ\Publish\Core\MVC\Symfony\View\View;

class ContentTypeIdentifierForCreateView extends MultipleValued
{

    public function matchLocation(Location $location)
    {
        return false;
    }

    public function matchContentInfo(ContentInfo $contentInfo)
    {
        return false;
    }

    public function match(View $view)
    {
        return isset($this->values[$view->getContentType()->identifier]);
    }
}

ezstring.html.twig

{# choose the fieldtype widget to override by customizing the block 'ezplatform_fieldtype[fieldtype_identifier]_widget #}
{%- block ezplatform_fieldtype_ezstring_widget -%}
    {# checking the field identifier #}
    {% if form.parent.vars.name == 'title' %}
        {# add your custom code here #}
            {% if form.parent.vars.data.fieldDefinition.descriptions[form.parent.vars.languageCode] is defined %}
                <small>
                    <i>
                        {{ form.parent.vars.data.fieldDefinition.descriptions[form.parent.vars.languageCode] }}
                    </i>
                </small>
            {% endif %}

        {{- block('form_widget_simple') -}}
        {{- block('description') -}}
    {% else %}
        {{- block('form_widget_simple') -}}
    {% endif %}
{%- endblock -%}

{%- block description -%}
    {#https://doc.ezplatform.com/en/latest/guidelines/components/modals/#}
    <!-- Button trigger modal -->
    <button type="button" class="btn btn-primary btn-modal-launcher" data-toggle="modal" data-target="#ez-modal--custom-url-alias"> Seo? <img src="https://ez.no/bundles/eznodesign/images/favicon.ico"></button>

    <!-- Modal -->
    <div class="modal fade ez-modal ez-translation show" id="ez-modal--custom-url-alias" tabindex="-1" role="dialog" aria-modal="true">
        <div class="modal-dialog" role="document">
            <div class="modal-content">
                <div class="modal-header">
                    <h3 class="modal-title">Title SEO</h3>
                    <button type="button" class="close" data-dismiss="modal" aria-label="Close">
                        <svg class="ez-icon ez-icon--medium" aria-hidden="true">
                            <use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="../../ez-icons.svg#discard"></use>
                        </svg>
                    </button>
                </div>
                <div class="modal-body">
                    <span class="ez-translation__title">Analyzing the keyword is the first step to making your post’s title SEO friendly</span>
                </div>
                <div class="modal-footer justify-content-center">
                    <button type="button" class="btn btn-primary" data-dismiss="modal">Thanks</button>
                </div>
            </div>
        </div>
    </div>
{%- endblock -%}

views.yml

#be sure to create the template and Matcher folder structure or create your own and adapt the configuration
system:
    admin_group:
        #EDIT
        content_edit_view:
            full:
                ezplatform_admin_ui_article:
                    template: '@ezdesign/content/content_edit/content_edit.html.twig'
                    match:
                        Identifier\ContentType: [article]
                    params:
                        viewbaseLayout: '@ezdesign/layout.html.twig'
                        form_templates: ["@ezdesign/fieldtypes/edit/ezstring.html.twig"]
        #CREATE
        content_create_view:
            full:
                ezplatform_admin_ui_article_create:
                    template: '@ezdesign/content/content_edit/content_create.html.twig'
                    match:
                        \EzSystems\CustomizeAdminUIBundle\lib\Matcher\ContentBased\Identifier\ContentTypeIdentifierForCreateView:
                            - article
                    params:
                        viewbaseLayout: '@ezdesign/layout.html.twig'
                        form_templates: ["@ezdesign/fieldtypes/edit/ezstring.html.twig"]