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Helpers gs-helpers

Default Fallback Value default-value

The Default Fallback Value helper is used to return a default fallback value if an attribute is empty or null. This mechanism works for Profile attributes and Journey events.

Syntax

Hello {%=profile.personalEmail.name.firstName ?: "there" %}!

In this example, the value there is displayed if the firstName attribute of this profile is empty or null.

Conditions if-function

The if helper is used to define a conditional block.
If the expression evaluation returns true, the block is rendered otherwise it is skipped.

Syntax

{%#if contains(profile.personalEmail.address, ".edu")%}
<a href="https://www.adobe.com/academia">Check out this link</a>

Following the if helper, you can enter an else statement to specify a block of code to be executed, if the same condition is false.
The elseif statement will specify a new condition to test if the first statement returns false.

Format

{
    {
        {%#if condition1%} element_1
        {%else if condition2%} element_2
        {%else%} default_element
        {%/if%}
    }
}

Examples

Unless unless

The unless helper is used to define a conditional block. By opposition to the The if helper, if the expression evaluation returns false, the block is rendered.

Syntax

{%#unless unlessCondition%} element_1 {%else%} default_element {%/unless%}

Example

Render some content based on email address extension:

{%#unless endsWith(profile.personalEmail.address, ".edu")%}
Some Normal Content
{%else%}
Some edu specific content Content
{%/unless%}

Each each

The each helper is used to iterate over an array.
The syntax of the helper is {{#each ArrayName}} YourContent {{/each}}
We can refer to the individual array items by using the keyword this inside the block. The index of the array’s element can be rendered by using {{@index}}.

Syntax

{{#each profile.productsInCart}}
    <li>{{this.name}}</li>
{{/each}}

Example

{{#each profile.homeAddress.city}}
  {{@index}} : {{this}}<br>
{{/each}}

Example

Render a list of products that this user has in their cart:

{{#each profile.products as |product|}}
    <li>{{product.productName}} {{product.productRating}}</li>
{{/each}}

With with

The with helper is used to change the evaluation token of template-part.

Syntax

{{#with profile.person.name}}
{{this.firstName}} {{this.lastName}}
{{/with}}

The with helper is useful to define a shortcut variable too.

Example

Use with for aliasing long variable names to shorter ones:

{{#with profile.person.name as |name|}}
 Hi {{name.firstName}} {{name.lastName}}!
 Checkout our trending products for today!
{{/with}}

Let let

The let function allows an expression to be stored as a variable to be used later in a query.

Syntax

{% let variable = expression %} {{variable}}

Example

The following example lets you calculate the total sum of prices for products in the cart with prices between 100 and 1000.

{% let sum = 0%}
    {{#each profile.productsInCart as |p|}}
        {%#if p.price>100 and p.price<1000%}
            {%let sum = sum + p.price %}
        {%/if%}
    {{/each}}
{{sum}}