attr

attr.FuncMap Template Functions

The attr.FuncMap provides several utility functions for working with HTML attributes in Go templates. Below is a description of each function and examples of how they can be used in templates.

attr_class

Combines multiple class names into a single string, filtering out any empty strings.

Usage:

<div class="{{ attr_class "card" (when .IsLarge "card-lg") (unless .IsVisible "hidden") }}">Content</div>

attr_safe

Marks a string as safe for HTML attribute output.

Usage:

<input type="text" value="{{ attr_safe .Value }}">

attr_selected

Returns "selected" if the current value matches the value, otherwise returns an empty string.

Usage:

<option value="option1" {{ attr_selected .CurrentValue "option1" }}>Option 1</option>

attr_checked

Returns "checked" if the current value matches the value, otherwise returns an empty string.

Usage:

<input type="checkbox" {{ attr_checked .IsChecked "true" }}>

attr_disabled

Returns "disabled" if the current value matches the value, otherwise returns an empty string.

Usage:

<button {{ attr_disabled .IsDisabled "true" }}>Submit</button>

attr_readonly

Returns "readonly" if the current value matches the value, otherwise returns an empty string.

Usage:

<input type="text" {{ attr_readonly .IsReadonly "true" }}>

These functions help ensure that HTML attributes are correctly and safely rendered in templates, improving both security and readability.