About this plugin
ASARI Calculators adds a spreadsheet editor to WordPress and connects it to the Contact Form 7 forms you already use, so you do not need to rebuild them in a separate form builder. You model the calculation the way you would in a spreadsheet: values and formulas such as =ROUND(B2*B3,2) or =IF(B4>0,B2/B4,0) in a grid of cells, edited under ASARI Calculators in the admin menu. Then you bind cells to form fields by adding a class such as b2-edit to an input or b7-read to a result.
Results update live as visitors type, are sent in the Contact Form 7 email, and follow Polish and English number formats.
The plugin requires Contact Form 7. Until Contact Form 7 is installed and active, an admin notice is shown and calculators are not loaded on the site.
Example calculator
The Add example calculator button at the top of the ASARI Calculators screen creates a ready-made loan or lease instalment calculator (amount, annual interest rate, number of months → monthly instalment, total cost, total interest) together with its Contact Form 7 form. The calculator then shows the form shortcode to paste into a page, with a Copy button and a link to edit the form. Labels are created in the site language.
The button is shown until the example calculator exists.
Connecting a calculator to a form
Mark the form with the calculator ID, in one of these ways:
- add the html_class attribute to the form shortcode: [contact-form-7 id="123" html_class="asari-calculator-asari-calc-1"],
- or wrap the fields in the form template: <div class="asari-calculator-asari-calc-1">... </div>,
- or, outside Contact Form 7 markup, use data-asari-calculator="asari-calc-1" on a parent element in the page content.
g. [number salary class:b3-edit] ):
- b3-edit writes the field value into cell B3 before calculation.
- b27-read displays the calculated value of cell B27. Read fields are made read-only, so their values are still sent with the form.
- A read list, radio or checkbox selects the option that matches the result, either the same text ( High ) or a label that reads as the same number ( Yes -... for 1, 1,67% for 1.67). The other options are locked, and the selected one is sent with the form. A single checkbox is checked when the result is not 0.
Results update live while visitors fill in the form, and the calculator also recalculates when the page loads, immediately before the form is submitted and after Contact Form 7 resets the form.
Formulas
A cell starting with = is a formula. Supported syntax:
- cell references and ranges: B1, B1:B4 (case-insensitive),
- numbers and text in double quotes: 12.5, "yes" (write "" for a quote inside text),
- arithmetic: + - * / % ^,
- comparisons: = <> < > <= >= (also == and!= ),
- logic: &&, ||,!, TRUE, FALSE,
- functions: SUM, AVERAGE ( AVG ), MIN, MAX, ROUND, ABS, CEIL, FLOOR, IF,
- argument separator:, or;.
Examples: =B1*2, =SUM(B1:B4), =ROUND(B1/12,2), =IF(B1>0,B1,0), =IF(B3>5000,"high","low").
Formulas are evaluated by the plugin’s own parser; they cannot run JavaScript. A formula that cannot be parsed shows an empty value.
Numbers in Polish and English
67. Labels starting with Tak / Yes / True become 1, and Nie / Bez / No / False become 0. 234 is 1234, on an English site the other way round.
Number inputs are always read exactly.
g. 39. g.
array( 'decimal' => ',', 'thousands' => ' ' ) for 7 147,39.
org language packs take precedence when available.