Add filter to comment form class

[cjbj]

Almost all html of the comment_form function can be customized using filters, except for this line (current 2285 in comment-template.php), which is the wrapping div of the comment form:

<div id="respond" class="comment-respond">

I feel there are legitimate reasons for wanting at least the class to be filterable. For instance if you are using the clearfix class throughout your design to clear floats. So I would like to propose changing this line to this:

$respond_class = 'comment-respond';
$respond_class = apply_filters ('comment_form_respond_class' ,$respond_class);
echo '<div id="respond" class="' . esc_attr($respond_class) . '">';

[andraganescu]

I have tested this patch and it works very well. Allowing a filter for the class of the comment wrapper is indeed a minor enhancement, but nevertheless a logical one considering that almost all the other parts of that form are filterable.

[SergeyBiryukov]

Thanks for the patch!

Instead of a filter, I think this would make more sense as a new argument for the comment_form() function, for consistency with the existing class_form and class_submit arguments.

[cjbj]

That makes sense. It would still be filterable through 'comment_form_defaults' for less experienced developers.

[mayankmajeji]

Comment respond class "class_repond" added to "comment-template.php" file.

[mayankmajeji]

I've added an argument "class_respond" to the comment_form() function. I hope this should do.

Replying to SergeyBiryukov:

Thanks for the patch!

Instead of a filter, I think this would make more sense as a new argument for the comment_form() function, for consistency with the existing class_form and class_submit arguments.

[SergeyBiryukov]

In 48393:

Comments: Allow passing a custom class to the form container element in comment_form().

Props cjbj, yahil, mayankmajeji, andraganescu, SergeyBiryukov.
Fixes #41009.