{"id":30165,"date":"2022-11-04T21:15:59","date_gmt":"2022-11-04T21:15:59","guid":{"rendered":"https:\/\/crocoblock.com\/knowledge-base\/articles\/calculated-callback-add-on\/"},"modified":"2023-07-19T00:29:14","modified_gmt":"2023-07-19T00:29:14","slug":"calculated-callback-add-on","status":"publish","type":"article","link":"https:\/\/crocoblock.com\/knowledge-base\/jetengine\/calculated-callback-add-on\/","title":{"rendered":"Calculated Callback Add-on"},"content":{"rendered":"\n

You can perform mathematical calculations using the JetEngine <\/em>Dynamic Field<\/strong><\/a> <\/strong>and Calculated Callback<\/strong> add-on.<\/p>\n\n\n\n

The initial step is downloading the callback add-on from the JetEngine <\/em>plugin. Proceed to the DevTools page<\/strong><\/a> and press the \u201cDownload<\/strong>\u201d button next to the Calculated Callback <\/strong>add-on. <\/p>\n\n\n\n\"calculated\n\n\n\n

Go to the WordPress Dashboard > Plugins > Add New <\/em><\/strong>directory. Push the \u201cUpload Plugin<\/strong>\u201d button.<\/p>\n\n\n\n

Once done, you can upload the item manually by pressing the \u201cChoose File<\/strong>\u201d button or drag-n-drop .zip format file to the highlighted field.<\/p>\n\n\n\n

After the file has been selected, the \u201cInstall Now<\/strong>\u201d button becomes available, click it, and don\u2019t forget to press the \u201cActivate Plugin<\/strong>\u201d button on the proceeding installing step.<\/p>\n\n\n\n\"add\n\n\n\n

The Calculated Callback<\/strong> add-on works with the Number meta fields<\/a><\/strong>, so ensure to add such a meta field to the CPT for which the Listing template was created and fill the value for several posts.<\/p>\n\n\n\n

Proceed to the page where you want to place the Dynamic Field<\/strong>. For instance, we will open a Listing template. You can also use a Single or an Archive template. <\/p>\n\n\n\n

Add a Dynamic Field <\/strong>if you haven\u2019t done it yet.<\/p>\n\n\n\n

We choose \u201cMeta Data\u201d as the Source<\/strong> and the \u201cPrice per 1 day\/night\u201d option in the newly appeared Meta Field<\/strong>.<\/p>\n\n\n

<\/svg><\/div>
Warning<\/div>

\u201cPrice per 1 day\/night\u201d option stands for the JetEngine<\/em> Meta Field<\/strong> of the number type<\/strong><\/a> as we perform arithmetical operations.<\/p><\/div><\/div>\n\n\n\n\"dynamic\n\n\n\n

Scroll down to the Filter Field Output <\/strong>toggle and activate it.<\/p>\n\n\n\n

In the Callback <\/strong>drop-down menu, select the \u201cCalculated field\u201d option.<\/p>\n\n\n\n

Pick the desired callback in the Calculated callbacks <\/strong>field.<\/p>\n\n\n\n

Increase Value by Percentage<\/h2>\n\n\n\n
\n

When this value is chosen, set the desired percent in the Additional arguments <\/strong>field, and the result will be counted and displayed straight away.<\/p>\n\n\n\n\"increase\n<\/div><\/div>\n\n\n\n

Decrease Value by Percentage<\/h2>\n\n\n\n
\n

This time, value input in the Additional arguments <\/strong>field will be subtracted from the meta field value.<\/p>\n\n\n\n\"decrease\n<\/div><\/div>\n\n\n\n

Sum Fields<\/h2>\n\n\n\n
\n

In the Additional arguments<\/strong> field, paste the Meta Field Key <\/strong>of the field you want to sum with the meta field you have chosen as the Dynamic Field <\/strong>source.<\/p>\n\n\n\n\"sum\n<\/div><\/div>\n\n\n\n

Fields Difference<\/h2>\n\n\n\n
\n

Subtract the desired value from the editable dynamic field. To do so, paste the required Meta Field Key <\/strong>in the Additional arguments <\/strong>field.<\/p>\n\n\n\n\"fields\n<\/div><\/div>\n\n\n\n

Multiple Fields<\/h2>\n\n\n\n
\n

Fill in the Additional arguments <\/strong>field with the meta field you want to use as the second source for multiplication.<\/p>\n\n\n\n

As you can see, now the default price has been multiplied by eight.<\/p>\n\n\n\n\"multiple\n<\/div><\/div>\n\n\n\n

Custom Callback<\/h2>\n\n\n\n
<\/svg><\/div>
Warning<\/div>

Before proceeding with the next steps, create a backup or replicate the actions on the staging site. The backup ensures the website restoration if an error occurs. To learn more, proceed to the How to Backup and Restore a WordPress Website with a Plugin<\/a> article.<\/p><\/div><\/div>\n\n\n\n

Besides, you can also set a custom callback. Look at the available example<\/a>. <\/p>\n\n\n\n\"config\n\n\n\n

Head to WordPress Dashboard ><\/em><\/strong> Appearance > Theme Editor<\/em><\/strong> and paste the code in the Theme Functions <\/strong>of your active WordPress theme.<\/p>\n\n\n\n

You can change the name of your callback by typing it instead of the ‘custom_callback’ value.<\/p>\n\n\n\n

Moreover, mind altering the ‘guests-number’ into the meta field you want to use as an additional arithmetical value.<\/p>\n\n\n\n

In our case, the result will be calculated based on the number of guests. Depending on whether there are fewer or more guests than 10, the formula will change.<\/p>\n\n\n\n

You can also change any needed calculation conditions. Push the \u201cUpdate File<\/strong>\u201d button once the code is ready.<\/p>\n\n\n\n\"theme\n\n\n\n

Move to the template you want to edit and scroll down to Filter field output<\/strong>. Enable this toggle and select the \u201cCalculated field\u201d from the Callback <\/strong>drop-down menu.<\/p>\n\n\n\n

Pick the created custom callback among the available options in the Calculated Callbacks<\/strong>. Once done, the price of the custom post will already be calculated.<\/p>\n\n\n\n

In this case, this part of the formula works:<\/p>\n\n\n\n

elseif ( 5 <= $additional_field_value && $additional_field_value < 10 ) {\n\t$result = $field_value * $additional_field_value - $field_value * $additional_field_value * 0.1;<\/code><\/pre>\n\n\n\n\"custom\n\n\n\n
Besides, you can use the Customize field output <\/strong>feature. Type the desired characters before and\/or after the \u201c%s\u201d sign.<\/p>\n\n\n\n\"customized\n\n\n\n
Whenever you are ready, click on the \u201cPublish\/Update<\/strong>\u201d button to save the changes and head to the page you want to place the listing.<\/p>\n\n\n\n
Place the Listing Grid<\/strong><\/a> <\/strong>widget on the page. Select the Listing <\/strong>you have just created.<\/p>\n\n\n\n\"listing\n\n\n\n
Once all the Listing Grid settings are adjusted, click on the \u201cPublish\/Update<\/strong>\u201d button. Let\u2019s check the result.<\/p>\n\n\n\n\"listing\n\n\n\n
Everything works fine. The price is calculated depending on the number of guests, the price entered in the custom post type meta fields, and the formula pasted in the Theme Editor.<\/p>\n<\/div><\/div>\n\n\n\n
Now you know how to use the Calculated Callback <\/strong>add-on by the JetEngine <\/em>plugin.<\/p>\n","protected":false},"excerpt":{"rendered":"
Learn how to perform arithmetic operations in the Dynamic Field with the help of the JetEngine Calculated Callback add-on.<\/p>\n","protected":false},"author":1,"featured_media":0,"template":"","format":"standard","builder-category":[],"article-category":[390],"yoast_head":"\nCalculated Callback Add-on \u2013 JetEngine DevTools | Crocoblock<\/title>\n<meta name=\"description\" content=\"Learn more about the dynamic calculated callback feature from the JetEngine plugin and how to use it on a WordPress website.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/crocoblock.com\/knowledge-base\/jetengine\/calculated-callback-add-on\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Calculated Callback Add-on \u2013 JetEngine DevTools | Crocoblock\" \/>\n<meta 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