Calculator

Calculator is a gh-element that allows you to make expressions that will automatically calculate a value according to given conditions.

Functional Characteristics

This element allows you to automate various calculations. For example, it can be configured for payroll calculations. It can calculate not only number data. It can also count the amount of items sold by their status, which is set with radio button in items.

Element Options

The calculator has two types of options, which allow you to compose an expression to calculate the value and which allow you to customize the value in the field.

Field Settings

The first setting group contains standard field settings and additional settings that configures the displaying of the calculated value.

Precision

The current setting allows you to specify the accuracy of the calculation result. This is a drop-down list where you can select the number of decimal places.

The maximum available number is 3 decimal places.

It is also worth noting that the value is rounded in accordance with well-known rules. For example, we got this figure from our calculations:

Since the thousandth number is less than 5, the hundredth number remains 6.

If we round to tens, the tenth number will be 2, because the hundredth number is greater than 5.

With this setting, you can also set the number of decimal places for various values that require special precision, such as monetary values.

Prefix

This setting allows you to enter a special prefix for numbers. This is useful when you need to customize a numeric field, for example, for a price field.

The prefix can be any character, word, number, or any string data.

After entering the prefix, it will be displayed before each value of this field.

The Number prefix is not stored in the field value.

Suffix

This is an additional setting where you can enter the custom suffix. That is, you enter the data that will be displayed after the number value.

This can be any string data, such as words or numbers.

Using a suffix does not affect the field value. It only displays the suffix after the value in the items.

That is the suffix is not saved in the field value.

Persistent Value

By default, the Calculator element only calculates the created expression, but cannot save the resulting value. So, the current setting allows you to enable value saving.

Only when this option is enabled can the resulting value be saved in the field. After the update, the value will be updated.

One Time Generation

This option allows you to save the first generated value. That is, no matter how the value is updated through the variables, it will not affect the calculator value. This is used to prevent values from being updated.

One-time generation only only works with Persistent value.

But in fact, there is only one way to update the value - using the update button . This allows the user to update the Calculator value. If you update the calculation result, the value will be replaced.

Calculation

This is the calculation settings where you can enter and configure the required expression. It can consist of constant numbers and various variables based on the values of fields or items.

Constants

This is the set of buttons which allows you to enter the static numeric values. You can also enter decimals using the decimal point button.

Standard Calculator Buttons

The calculator element offers basic math operations. That's why there are buttons with the appropriate symbols.

Field

This function allows you to add a variable that gets a value from the field of the current item.

IF

The current function allows you to add a variable with a condition. With it, you can get the value of a field or field value if the item meets a certain condition.

Items Count

This function allows to use the number of items of the selected application in calculation.

SUM

This function allows you to get the sum of the values of a certain field from all items. It also allows you to set conditions for fields and sum not all values.

Clear Element

This button removes the last one element of the expression after clicking it.

Clear

This the button that allows to erase all the expression.

Element Style

In set of style settings, besides standard options, the calculator has only one unique setting, which slightly changes its interpretation.

General Settings

The general style settings of calculator contains one additional option that allows to expand the functionality of the element.

Update Button

This is the button that allows to update the field value. It is only useful when the One Time Generation function is enabled.

This option allows the user to control the change of the calculator value. In addition, it allows the user to determine after which variable update the value will be saved.

Filtration

The current element can be filtered by value using these filters:

• Equals(or)
• Equals(and)
• Not equals(or)
• Not equals(and)
• Bigger than
• Lower than
• Between
• Value

Interpretation

The calculator look is quite similar to the simple number. Namely, its interpretation types display this element as a number.

Default

The default type of interpretation displays allows the result of calculations with all additional signs, such as prefix, suffix, and precision.

Value

The second interpretation type displays the raw field value. Namely, it is without additional signs.

Value Format

The value depends of the Persistent Value setting. When that is off, calculator does not save the any value. In other case, the calculation result with all additional elements entered in settings is saved as a field value.

{
    "field_value": "4.00"
}

Data Model

{
    "data_model": {
        "arguments": [{
            "app_id": "27904",
            "sum_filters": []
        }],
        "expression": "5*6+ITEMSCOUNT()",
        "interpretation": [],
        "is_generate_once": 1,
        "is_persistent_value": 1,
        "precision": "2",
        "prefix": "",
        "suffix": ""
    }
}