How to Pass Data to Nested Templates in Go\'s `text/template` Package?

Passing Data Between Go Templates

In Go's text/template package, it's possible to nest templates to reuse common HTML elements. However, if you need to pass additional data to a嵌套. nested template, the default template mechanism doesn't support this directly.

To achieve this, you can create a custom function that combines the arguments into a slice and returns it. Register this function with your template, then use it to pass the arguments.

Here's an example:

package main

import (
    "text/template"
)

func main() {
    // Define the custom function to combine arguments
    func args(vs ...interface{}) []interface{} { return vs }

    // Parse the template with the custom function registered
    t, err := template.New("t").Funcs(template.FuncMap{"args": args}).Parse(...)
    if err != nil {
        // Handle error
    }

    // Render the template with the custom function
    t.ExecuteTemplate(..., template.Args(..., 5))

    // Access the arguments in the nested template
    {{ define "image_row" }}

       To stuff here {{index . 0}} {{index . 1}}

    {{ end }}
}

With this approach, you can dynamically pass additional data to nested templates, allowing for more flexible and reusable HTML code.

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