need to render several html snippets in different places inside a hamlet template

Question

in my default-layout.hamlet:

!!!
<html lang="en">
  <head>
    <meta charset="utf-8">
    <title>#{pageTitle pc}
    ^{pageHead pc}
  <body>
    <div id="main">
      <div id="header">
        ????
      <div id="content">
        ^{pageBody pc}

from a handler function, I need to replace the ???? above with some HTML contents.

how is this done?

thanks for any input.

EDIT:

I am looking for functionality similar to, for example, django's template blocks. I can define a block inside a template and the handler that uses this template for rendering, can fill in the template's blocks with the needed contents. Right now, yesod has effectively a single block in a template's body. that "defined" by the call ^{pageBody pc}. I know I can build up the output generated by pageBody any way I want using addWidget etc., but right now I will need to output my <div id="header"> and <div id="content"> too and I want to avoid that because all my handlers will have to output these div's to have the same markup structure in all the pages.

You said "some HTML contents." I'm not quite sure what you mean, but if you had a variable called `foo` of type `Html`, then you could just replace ???? with `#{foo}`. — Michael Snoyman, Sep 07 '11 at 17:34
to render my variable in default-layout.hamlet I need to define this variable in my foundation type's defaultLayout. if I do that, interpolation works. I am looking for a way to define this variable in my handler and still use it in the default-layout.hamlet. I would like to have the common HTML structure in the default-layout.hamlet, which handlers will fill in as they need. — akonsu, Sep 07 '11 at 18:03
Why can't you define the variable inside the defaultLayout function? I'm not entirely certain what you're going for here, can you perhaps expand your question to make it clearer? — Michael Snoyman, Sep 08 '11 at 05:27
as I said, I was looking for a way to render HTML from my handlers in several different places inside the default template. I have updated the question. I am not a native english speaker, sorry if I am not clear... — akonsu, Sep 08 '11 at 12:55

score 1 · Accepted Answer · answered Sep 08 '11 at 15:16

I think the answer is to define a function besides defaultLayout. The only thing that's magical about defaultLayout is that subsites (e.g., auth) and error messages use it by default. But you could define a "myDefaultLayout" that takes the other pieces of content you want. You could even define a helper function that wraps up the extra blocks into a single block and then passes that to defaultLayout.

need to render several html snippets in different places inside a hamlet template

1 Answers1