Advanced Page Template is a nice new approach to custom fields by page template. 
Please try to configure the custom fields easily in the template file itself using this plugin.
It doesn’t require to save any configuration data to database, just config the custom fields in template file itself as how wordpress recognize the templates – Its just wordpress way!
I think that it makes developing and deploying more easy and more sense for the developers. 🙂
Note: I highly recommend you to install and activate Advanced Custom Fields plugin so as to get its perfect benefit. Field Types only works with Advanced Custom Fields plugin.
<h4>Usage</h4>
Open a template file with any text editor and add some additional templating comment lines starting with @custom_field keyword:
Example 1:
<pre>
/*
* Template Name: 2column-layout
*
* @custom_field main, type: wysiwyg, label: Main content
* @custom_field sidebar, type: wysiwyg, label: Sidebar
*/
</pre>
Example 2:
<pre>
/*
* Template Name: Contact Page
*
* @custom_field photo, type: image, label: Photo of manager
* @custom_field phone, type: text
* @custom_field map, type: google_map
* 
* Note: The photo, phone, map are the custom field names in each '@custom_field' line,
* therefore use wordpress's 'get_post_meta' or ACF's 'get_field' method with those custom field names to get the values in this template. :)
*/
</pre>
Please bring the page edit link up in the backend and select the template which you just edited and hit ‘Update’ or ‘Save’ button. 
After page refreshing, You can’t miss new custom fields block from this template file.
Available Types and options with Advanced Custom Fields plugin are:
<pre>
/*
* @custom_field tab1, type: tab, instructions: Tab

* @custom_field field1, type: checkbox, choices: (1|2|3), label: Checkbox
* @custom_field field2, type: color_picker, label: Color Picker
* @custom_field field3, type: email, label: Email
* @custom_field field4, type: file, label: File
* @custom_field field5, type: google_map, label: Google map
* @custom_field field6, type: image, label: Image
* @custom_field field7, type: message, message: Message goes right here, label: Message
* @custom_field field8, type: number, label: Number
* @custom_field field9, type: page_link, label: Page link
* @custom_field field10, type: password, label: Password

* @custom_field tab2, type: tab, label: Tab

* @custom_field field11, type: post_object, label: Post object
* @custom_field field12, type: radio, choices: (1|2|3), label: Radio
* @custom_field field13, type: relationship, label: Relationship
* @custom_field field14, type: select, choices: (1|2|3), label: Select
* @custom_field field15, type: taxonomy, label: Taxonomy
* @custom_field field16, type: text, label: Text
* @custom_field field17, type: textarea, label: Textarea
* @custom_field field18, type: true_false, label: True/False
* @custom_field field19, type: user, label: User
* @custom_field field20, type: wysiwyg, label: Wysiwyg
*/
</pre>

Advanced Page Template

Advanced Page Template is a nice new approach to custom fields by page template.

bobbingwide

vsgloik

Now with 9 blocks:
<ul>
<li>Address – Displays your address from oik-options</li>
<li>Contact form – Displays a contact form</li>
<li>Contact field – Part of the Contact form</li>
<li>Countdown – Countdown / count since timer</li>
<li>Dynamic content – Dynamic content block</li>
<li>Follow me – Displays your social media links</li>
<li>Google Maps – Displays a Google Maps map using oik options</li>
<li>PayPal button – PayPal button for: Pay Now, Buy Now, Donate, Add to Cart, and View Cart / Checkout</li>
<li>Shortcode block for oik shortcodes – Expands oik shortcodes</li>
</ul>
The oik base plugin provides a series of advanced WordPress shortcodes that help you display dynamic content from your website’s pages, posts, attachments, links and custom post types. 
The OIK Information Kit uses lazy smart shortcode technology to display your WordPress website’s content including your often included key-information. 
The functionality in the oik base plugin is used by over 40 other WordPress plugins, providing powerful facilities for an efficient, performant website.
oik now provides over 80 shortcodes including:
<ul>
<li>[bw_pages], [bw_posts], [bw_thumbs], [bw_attachments], [bw_images], [bw_pdf] shortcodes to list subpages, posts, attachments or custom post types </li>
<li>[bw_cycle] to display content using jQuery cycle.</li>
<li>[bw_list], [bw_tree] to display lists of links to pages, posts, attachments or custom post types </li>
<li>[bw_table] to tabulate pages, posts or custom post types</li>
<li>[bw_bookmarks] to list links</li>
<li>[paypal] shortcodes for PayPal buttons: Pay Now, Buy Now, Donate, Add to Cart, View Cart/Checkout</li>
<li>[bw_block] & [bw_eblock], [div] & [ediv], [clear] – to create block structures within your pages, posts and even widgets</li>
<li>[bw_button], [bw_contact_button] – to provide call-to-action button style links for Artisteer themes</li>
<li>helper shortcodes for web designers and developers: [bw_editcss], [bwtrace], [bw_wpadmin], [bw_wtf], [stag] & [etag]</li>
</ul>
oik helps you to display information about you, your company, your social networking ids and your website using standard formats that search engines such as Google recognise.
<ul>
<li>You enter your information once, then use oik shortcodes to display it wherever you want; in titles, post and page content, header, sidebar and footer widgets.</li>
<li>Whenever you need to change a value you only need to update it in one place; and your website is updated instantly.</li>
<li>Shortcodes to display often included key information include: [bw_contact], [bw_telephone], [bw_mobile], [bw_mailto], [bw_company], [bw_address], [bw_show_googlemap], [bw_directions], [bw_logo], [bw_qrcode], [bw_copyright]</li>
<li>For your social networking use the [bw_follow_me] shortcode to display your links to Twitter, Facebook, LinkedIn, etcetera</li>
</ul>
Features:
<ul>
<li>oik provides buttons to help you write the shortcodes, showing you the parameters you can choose and default values </li>
<li>oik provides a shortcode discovery page where you can find out about every shortcode which is active in your site</li>
<li>lazy programming means that code is only loaded when it’s actually needed</li>
<li>smart means that the shortcodes can recognise the content in which they’re used and adjust their behaviour accordingly</li>
<li>oik is extendable – plugin developers can build on the oik base functionality </li>
<li>using the oik API: help, syntax information, examples AND HTML snippets can be produced for any plugin or theme that provides shortcodes</li>
<li>oik is theme independent; meaning that you can change your theme without having to worry about whether or not the shortcodes will still work.</li>
<li>oik uses microformats so that Google and other search engines can understand your content.</li>
</ul>
<h3>Further reading</h3>
If you want to read more about the oik plugins then please visit the 
<a href="https://www.oik-plugins.com/oik" rel="nofollow ugc">oik plugin</a> 
“the oik plugin – for often included key-information”
<h4>Other plugins</h4>
Other plugins which depend upon the oik API are available on WordPress.org:
<ul>
<li><a href="https://www.wordpress.org/extend/plugins/bbboing" rel="nofollow ugc">bbboing</a> – obfuscate text but leave it readable</li>
<li><a href="https://www.wordpress.org/extend/plugins/cookie-cat" rel="nofollow ugc">cookie-cat</a> – [cookies] shortcode to list the cookies your website may use</li>
<li><a href="https://www.wordpress.org/extend/plugins/oik-batchmove" rel="nofollow ugc">oik-batchmove</a> – batch change post categories or published date</li>
<li><a href="https://wordpress.org/extend/plugins/oik-nivo-slider/" rel="ugc">oik-nivo-slider</a> – [nivo] shortcode for the jQuery “Nivo slider” for posts, pages, attachments and custom post types</li>
<li><a href="https://www.wordpress.org/extend/plugins/oik-privacy-policy" rel="nofollow ugc">oik-privacy-policy</a> – generate a privacy policy page, compliant with UK cookie law (EU cookie directive)</li>
<li><a href="https://wordpress.org/plugins/oik-read-more" rel="ugc">oik-read-more</a> – progressively reveal content by clicking on “read more” buttons</li>
</ul>
Plugins which participate with oik shared libraries are:
<ul>
<li><a href="https://wordpress.org/plugins/oik-bwtrace/" rel="ugc">oik-bwtrace</a> – Debug trace for WordPress, including action and filter tracing</li>
<li><a href="https://www.wordpress.org/extend/plugins/oik-css" rel="nofollow ugc">oik-css</a> – [bw_css] for CSS styling per page</li>
<li><a href="https://wordpress.org/extend/plugins/uk-tides/" rel="ugc">uk-tides</a> – [bw_tides] shortcode for tide times and heights in the UK (replaces oik-tides)</li>
</ul>
These plugins are not dependent upon oik:
<ul>
<li><a href="https://wordpress.org/plugins/allow-reinstalls/" rel="ugc">allow-reinstalls</a> – Allow re-installation of plugins and themes by upload</li>
<li><a href="https://wordpress.org/plugins/oik-weight-zone-shipping" rel="ugc">oik-weight-zone-shipping</a> – Weight Zone Shipping for WooCommerce</li>
<li><a href="https://wordpress.org/plugins/oik-weightcountry-shipping" rel="ugc">oik-weightcountry-shipping</a> – Weight/Country Shipping for WooCommerce</li>
</ul>
More FREE and Premium plugins are available from <a href="https://www.oik-plugins.com/wordpress-plugins-from-oik-plugins/" rel="nofollow ugc">oik-plugins.com</a> including:
<ul>
<li><a href="https://www.oik-plugins.com/oik-plugins/diy-oik" rel="nofollow ugc">diy-oik</a> – Do-It-Yourself shortcodes</li>
<li><a href="https://www.oik-plugins.com/oik-plugins/oik-blocks" rel="nofollow ugc">oik-blocks</a> – WordPress blocks for oik shortcodes</li>
<li><a href="https://www.oik-plugins.com/oik-plugins/external-link-warning-jquery/" rel="nofollow ugc">oik-External link warning jQuery</a> – Warns visitor about leaving your site</li>
<li><a href="https://www.oik-plugins.com/oik-plugins/oik-fields-custom-post-type-field-apis" rel="nofollow ugc">oik-fields</a> – custom post type field APIs</li>
<li><a href="https://www.oik-plugins.com/oik-plugins/oik-ms-oik-multisite-shortcodes/" rel="nofollow ugc">oik-ms</a> – oik MultiSite shortcodes</li>
<li><a href="https://www.oik-plugins.com/oik-plugins/oik-mshot" rel="nofollow ugc">oik-mshot</a> – Shortcode to display the “mshot” of an URL; oik-fields extension</li>
<li><a href="https://www.oik-plugins.com/oik-plugins/oik-rating" rel="nofollow ugc">oik-rating</a> – 5 star rating custom field; oik-fields extension</li>
<li><a href="https://www.oik-plugins.com/oik-plugins/oik-testimonials" rel="nofollow ugc">oik-testimonials</a> – Manage and display testimonials.</li>
<li><a href="https://www.oik-plugins.com/oik-plugins/oik-todo-todo-list" rel="nofollow ugc">oik-todo</a> – TO DO list</li>
<li><a href="https://www.oik-plugins.com/oik-plugins/oik-types" rel="nofollow ugc">oik-types</a> – custom content type, field and taxonomy manager</li>
<li><a href="https://www.oik-plugins.com/oik-plugins/oik-user" rel="nofollow ugc">oik-user</a> – display oik information for each site user</li>
</ul>
oik plugins are suitable for:
<ul>
<li>WordPress site owners</li>
<li>WordPress site administrators</li>
<li>WordPress designers</li>
<li>WordPress web site developers </li>
<li>WordPress plugin developers</li>
</ul>
oik plugins are tested with:
<ul>
<li>WordPress</li>
<li>WordPress Multisite</li>
<li>PHP 8.1, PHP 8.2, PHP 8.3 & PHP 8.4</li>
<li>PHPUnit 9.6, 10.5 & 11.4</li>
</ul>
All of the plugins are developed using a set of functions that can make PHP and HTML coding a bit easier. 
These are known as the <a href="https://www.oik-plugins.com/apis/oik-apis" rel="nofollow ugc">OIK Application Programming Interface (OIK API)</a>

Over 80 advanced, powerful shortcodes, and 9 blocks for displaying the content of your WordPress website.

Advanced Page Template vs oik