is_rtl() does not work in Plugin with own Themes

[AppFIX-DE]

RTL support in themes is achieved through the creation of an rtl.css file, which is loaded (if it exists) in the wp-includes/theme.php change "if ( is_rtl() )" to "if ( function_exists( 'is_rtl' ) && is_rtl() )".

Thank you.

[mark-k]

@AppFIX-DE, Why is it needed? is_rtl is part of core code and should always be there when theme and plugin code is being executed..

[AppFIX-DE]

Replying to mark-k:

@AppFIX-DE, Why is it needed? is_rtl is part of core code and should always be there when theme and plugin code is being executed..

yes is_rtl is part of core but we have use different theme for mobile and at here is_rtl function is not found in theme because its declared at wp-includes/locale.php and we couldn't include at our plugin

[ocean90]

Why is is_rtl() not available in your mobile theme? Can you provide some code to reproduce the issue?

[AppFIX-DE]

Replying to ocean90:

Why is is_rtl() not available in your mobile theme? Can you provide some code to reproduce the issue?

Can you give mehr your email, then i can send you the plugin for the sample code. Then maybe you see the problem.

[AppFIX-DE]

@ocean90
@mark-k

In this Plugin you can use two themes at the same time. If you put domain.de it show Theme A and if you put domain.de/?system=app it show Theme B. And if i install the Plugin the Plugin is working but he can't find the function is_rtl() and i get a white screen in the backend.

If i change the wp-includes/theme.php "if ( is_rtl() )" to "if ( function_exists( 'is_rtl' ) && is_rtl() )" it's work.

I think it's a Bug from Wordpress side.

[ocean90]

Replying to AppFIX-DE:

Can you give mehr your email, then i can send you the plugin for the sample code. Then maybe you see the problem.

dominikschilling at gmail dot com.

[AppFIX-DE]

Replying to ocean90:

Replying to AppFIX-DE:

Can you give mehr your email, then i can send you the plugin for the sample code. Then maybe you see the problem.

dominikschilling at gmail dot com.

I have send you the code to your email.

[ocean90]

@AppFIX-DE: Please add add_editor_style() into a callback for the after_setup_theme hook.

function trac34208_after_setup_theme() {
    add_editor_style();
}
add_action( 'after_setup_theme', 'trac34208_after_setup_theme' );

[AppFIX-DE]

Replying to ocean90:

@AppFIX-DE: Please add add_editor_style() into a callback for the after_setup_theme hook.

function trac34208_after_setup_theme() {
    add_editor_style();
}
add_action( 'after_setup_theme', 'trac34208_after_setup_theme' );

Thanks for your help. I will check it.

[AppFIX-DE]

@ocean90: I have do that but it not work. Any other solution?

[johnbillion]

Please move this discussion to ​the support forums. Thanks!