Strategy for rendering multiple templates in a single response

[0ui]

I have an app which uses htmx and I often need to render a main response body plus some out-of-band content to swap out for a different part of the page, in a single response body

<!-- Template 1 --><div>Main template content</div>
<!-- Template 2 --><div id="other-part" hx-oob-swap="true">Some other part</div>

so typically I want to do something like

c.Render(http.StatusOK, "template-1", data1)
return c.Render(http.StatusOK, "template-2", data2)

but sending the status code twice doesn't make sense and I get an error message that says response already committed. To get around that I've been doing something like

c.Render(http.StatusOK, "template-1", data1)
return c.Echo().Renderer.Render(c.Response().Writer, "template-2", data2, c)

Is there a function I'm missing or more idiomatic approach to handling situations like these? I'm relatively new to golang. Thanks!

[aldas]

Go templates can include other templates. so you could create template 3 that includes template 1 and template2 and render that.

[0ui]

That's true I could create a parent template for both. Thinking about it more, I guess specifically I was hoping that I could keep flexibility of doing

if itemSuccess {
  toast.success("New item created successfully") // Writes some html
}
if someBranch {
  c.Render(200, "template-optional1", data)
}
if anotherBranch {
  c.Render(200, "template-optional2", data)
}
return c.Render(200, "template-always", data)

without creating new templates for every combination or a "master" template with slots for every possibility. If my only option is at the template level, I'll have to accept that. Thanks for the help!

[aldas]

I have not tried but you probably could do that branch inclusion inside the template, but it just moves the logic into template.