Replacing parent function in child theme

  • bic


    I’m trying to replace the function graphene_column_mode() from the file templates/theme-utils.php (line 111), with a modified function in my child theme functions.php.

    My problem is that graphene_column_mode() is not under the function_exists() conditional in parent theme, and I didn’t find a way to ‘deactivate’ or override it.

    Is there a way to accomplish my goal without modify the parent theme?

    Otherwise I could add the conditional in parent theme and ask you to add the same in future upgrades of your theme, is that possible?

    Thank you for your help and for your great job on graphene theme!


    Kenneth John Odle


    I don’t have an answer for you (sorry!) but your question intrigues me.

    I’m wondering if you want to replace this function to include other templates? If so, how are you going to handle the width issue? If not, what are you going to replace this function with?

    My understanding is that the functions in this file are back-end features (i.e., readers to your blog will never interact with them), so my curiosity is piqued. We don’t see a lot of back-end modification here.


    Kenneth John Odle


    Thinking about it now, this function wouldn’t be under the function_exists() conditional, since it is available more or less all the time. Have you tried just adding a replacement function to your functions.php file?



    Kenneth, about your first question, I don’t need to include other templates. I just want to have a 3 columns layout in home page, and a 2 columns layout in single posts and maybe somewhere else (I’m still working on the design).

    I know that this function is available all time, that’s the problem for me to override and replace it. Without the function_exists() conditional I get the Cannot redeclare graphene_column_mode() error, and I cannot just change the header.php file (where the function is called) in my child theme (to use a child function with a different name), because that function is (about) 4 steps later in the code, after a chain of 3 functions before it.

    I’ve already added the conditional in teme-utils.php for testing my mod, and everything works exactly like i want after that.

    After all it’s just a line of code to add, and there is a wordpress tip for developers that asks to add the conditional to every function, to make them pluggable.


    Kenneth John Odle


    I just want to have a 3 columns layout in home page, and a 2 columns layout in single posts and maybe somewhere else

    Strange. This can be achieved without hacking theme files, no?



    That would be great but I didn’t find a similar option in the back-end.

    I’m aware of the possibility to choose the layout on a page basis, but that is not enough for my purpose. I need it to be the default behavior for pages.

    Furthermore for single posts that option is not available at all to my eyes.

    Am I missing something?



    I’ve been working on other projects, no news here?

    I can confirm that, looking inside graphene_column_mode() function, is not present an option to chose the template for single post view. It can be done only for pages and for bbPress forum, if installed.


    Syahir Hakim


    I missed this thread and Graphene 1.7 has already been submitted to the repository. The function will be pluggable in version 1.7.1.

    In the mean time, you can do something like this to achieve different column modes for different posts/pages:

    function graphene_modify_column_mode(){
    global $graphene_settings;

    if ( is_single( 88 ) )
    $graphene_settings['column_mode'] = 'two_col_left';
    add_action( 'template_redirect', 'graphene_modify_column_mode' );



    Thank you very much Syahir!

    I’ll try your code.

    Anyway, if the funtion will be pluggable in 1.7.1, I can also just hack the current version of graphene_column_mode() with the conditional function_exists() and be sure that I’ll have no problems with future updates.

    Is that correct?


    Syahir Hakim


    1.7.1 will come after 1.7, so you will need to make the changes again when you update to 1.7.

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