On Sep 29, 2013, at 4:10 AM, Colin Law wrote:
>> the app/views/sessions/new.html.rb code
>>
>> 9 <div class="offset4 span4 border-radius">
>> 20 <form id="sign-in">
>> 21 <legend>Sign In with your email address and password</legend>
>> 22 <%= form_for(:session, url: sessions_path) do |f| %>
>
> It is not legal html to have nested forms.
>
> Colin
And the point of that is that the browser will take apart that illegal page and
make a valid form out of it, ignoring the nested child. Make this into a test
page in your text editor, and view it in a browser.
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>untitled</title>
</head>
<body>
<form action="foo" method="get" accept-charset="utf-8">
<form action="bar" method="get" accept-charset="utf-8">
<p><input type="text" value="baz"/></p>
</form>
<p><input type="text" value="boo"/></p>
</form>
</body>
</html>
If you view source, and actually look at the source code, you'll see what I
typed here. If you view the DOM (what the browser made out of it) you will see
this instead:
<!DOCTYPE html>
<html><head>
<meta charset="utf-8">
<title>untitled</title>
</head>
<body>
<form action="foo" method="get" accept-charset="utf-8">
<p><input type="text" value="baz"></p>
</form>
<p><input type="text" value="boo"></p>
</body></html>
See how the outer form is all that is left, and the inner form's contents have
been shifted outside of the outer form entirely? That's just what Safari does
-- other browsers may put the elements in a slightly different order -- but you
can't control this. The only way around it is to code a valid HTML page. Then,
if the browsers mess it up, that's on them, not you.
Walter
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