How do you implement a new filter?

[Derek Loewen]

I read the docs on creating a new filter here: https://fatfreeframework.com/3.6/preview#filter, yet when implementing the sample code mentioned in the example, I get a 500 error pointing to the template render() method (this is with debug level 3). 

The class is autoloading from a /libs/ folder and this line is in my main model constructor: 

\Preview::instance()->filter('badwords','\Helper::instance()->badwords');

Inside the template:

{{ @page.name | badwords }}

I'm running Fat-Free 3.6.3, loaded using composer.

What else should I check?

[xfra35]

Please share more information:

• the contents of the error log
• the source code of \Helper::instance()->badwords

[ikkez]

you can also check if your spaces in

{{ @page.name | badwords }}

are really spaces.. especially after | ... because on a mac, when you type | it's alt + 7, but in case you hold alt a second too long, and inadvertently press space + alt, it'll insert a non-breaking space (NBSP, U+00A0) and the template parser breaks on that one, which looks like a normal space, but is not.

[Derek Loewen]

@ikkez - I'm on Windows, but tried re-typing just in case - same result.

@xfra35 - this is what shows in the error log. Probably what's most interesting is "Invalid method NULL" - yet the filter should be registered because of calling \Preview::instance()->filter('badwords','\Helper::instance()->badwords'); prior to rendering the template, right?bad

The badwords method is the same as seen in the documentation:

class Helper extends \Prefab {
	function badwords($val) {
		$bad_words = array("badword","jerk","damn");
		$replacement_words = array("@#$@#", "j&*%", "da*@"); 
		return str_ireplace($bad_words, $replacement_words, $val);
	}
}

[06-Feb-2018 02:45:51 UTC] Invalid method NULL

[06-Feb-2018 02:45:51 UTC] [E:/MAMP/htdocs/passhub/vendor/bcosca/fatfree-core/base.php:2190] Base->error()

[06-Feb-2018 02:45:51 UTC] [E:/MAMP/htdocs/passhub/vendor/bcosca/fatfree-core/base.php:1794] user_error()

[06-Feb-2018 02:45:51 UTC] [E:/MAMP/htdocs/passhub/tmp/k38epssxilwc.e50avz1v1w8c.php:13] Base->call()

[06-Feb-2018 02:45:51 UTC] [E:/MAMP/htdocs/passhub/vendor/bcosca/fatfree-core/base.php:2733] require('E:\MAMP\htdocs\passhub\tmp\k38epssxilwc.e50avz1v1w8c.php')

[06-Feb-2018 02:45:51 UTC] [E:/MAMP/htdocs/passhub/vendor/bcosca/fatfree-core/base.php:2976] View->sandbox()

[06-Feb-2018 02:45:51 UTC] [E:/MAMP/htdocs/passhub/tmp/k38epssxilwc.24glerumkqckw.php:83] Preview->render()

[06-Feb-2018 02:45:51 UTC] [E:/MAMP/htdocs/passhub/vendor/bcosca/fatfree-core/base.php:2733] require('E:\MAMP\htdocs\passhub\tmp\k38epssxilwc.24glerumkqckw.php')

[06-Feb-2018 02:45:51 UTC] [E:/MAMP/htdocs/passhub/vendor/bcosca/fatfree-core/base.php:2976] View->sandbox()

[06-Feb-2018 02:45:51 UTC] [E:/MAMP/htdocs/passhub/app/models/PassHub/Logins.php:42] Preview->render()

[06-Feb-2018 02:45:51 UTC] [E:/MAMP/htdocs/passhub/vendor/bcosca/fatfree-core/base.php:1806] PassHub\Logins->view()

[06-Feb-2018 02:45:51 UTC] [E:/MAMP/htdocs/passhub/vendor/bcosca/fatfree-core/base.php:1627] Base->call()

[06-Feb-2018 02:45:51 UTC] [E:/MAMP/htdocs/passhub/index.php:10] Base->run()

ᐧ

Derek Loewen

On Mon, Feb 5, 2018 at 3:43 AM, ikkez via Fat-Free Framework <f3-framework+APn2wQcLLxvM44tXyXU...@googlegroups.com> wrote:

you can also check if your spaces in

{{ @page.name | badwords }}

are really spaces.. especially after | ... because on a mac, when you type | it's alt + 7, but in case you hold alt a second too long, and inadvertally press space + alt, it'll insert a non-breaking space (NBSP, U+00A0) and the template parser breaks on that one, which looks like a normal space, but is not.

Am Sonntag, 4. Februar 2018 02:20:13 UTC+1 schrieb Derek Loewen:

I read the docs on creating a new filter here: https://fatfreeframework.com/3.6/preview#filter, yet when implementing the sample code mentioned in the example, I get a 500 error pointing to the template render() method (this is with debug level 3). 

The class is autoloading from a /libs/ folder and this line is in my main model constructor: 

\Preview::instance()->filter('badwords','\Helper::instance()->badwords');

Inside the template:

{{ @page.name | badwords }}

I'm running Fat-Free 3.6.3, loaded using composer.

What else should I check?

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[xfra35]

If you're using the Template class, you should register filters with this same class:

\Template::instance()->filter('badwords','\Helper::instance()->badwords');