What is the best way to create an array and loop in template file

Question

I am using Gin gonic for my Go project, and in my footer.tmpl, I will have more than 10++ navigation links, rather than write 'link' multiple times, it would be much easier if I create an array containing the links, and title and loop through it, right?

The problem is as I have researched, Golang does not have an inbuilt function to declare an array/map variables inside view files (.tmpl/.html).

Why do I need the array to be inside the view file is because this footer.tmpl will be included in almost all other pages, if I have to write the array inside the controller and passed the variable, it will be too troublesome to pass the array params to all the pages.

This is my Golang code:

r.GET("/", func(c *gin.Context) {   
    tmpl := template.Must(template.ParseFiles("templates/layout.tmpl", "templates/index.tmpl", "templates/common/header_a.tmpl", "templates/common/footer_a.tmpl"))
    r.SetHTMLTemplate(tmpl)

    var hometabList = []HomeTab{
        HomeTab{Title: "Tab1", Value: 1},
        HomeTab{Title: "Tab2", Value: 2},
        HomeTab{Title: "Tab3", Value: 3},
    }

    c.HTML(200, "layout", gin.H {
        "tab": hometabList,
        "product": "123",
    })
})

I am a PHP developer moving to Go, in PHP you can do this inside the view:

view.php
<body>
    <?php 
    $arr_link = ['link1', 'link2', 'link3'];
    for($i = 0; $i < count($arr_link); $i++): ?>
        <div><a><?= $arr_link[$i]; ?></a></div>
    <?php endfor; ?>
</body>

By doing this, when I include this footer inside another page, it will be easier to maintain the codes.

Isanka Wijerathne · Accepted Answer · 2022-11-25 06:12:00Z

1

You can use range in your template:

{{range .YourListItems}}
  <div><a href="{{.Url}}">{{.Name}}</a></div>
{{end}}

edited Nov 25, 2022 at 6:12

Isanka Wijerathne

4,2163 gold badges30 silver badges36 bronze badges

answered Jun 14, 2020 at 22:17

Cem Ikta

1,46013 silver badges12 bronze badges

Sign up to request clarification or add additional context in comments.

3 Comments

Misti Over a year ago

You could find more at here golang.org/pkg/html/template

Charas Over a year ago

Thanks for your answer, but the question is how to I instantiate .YourListItems in the template view? because if not then I have to manually pass the .YourListItems to all my templates one by one, which is troublesome when I have let's say 30-40 templates. While if I could make the variable in the template itself, I just need to write it once in the template

Gwyneth Llewelyn Over a year ago

@Charas there is a working example about how to implement range here: stackoverflow.com/a/21303045/1035977

Collectives™ on Stack Overflow

What is the best way to create an array and loop in template file

1 Answer 1

3 Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

3 Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related