First parameter must either be an object or the name of an existing class

[bartrylant]

Description

I have a page with a maps field, called "location". I want to check if the location field is filled in, however, from the moment entry.location is somewhere in the template (doesn't matter where, even if it is in an if statement), I get this error:

First parameter must either be an object or the name of an existing class

Example code:

{% if entry.location.address|length %}<p><strong>Locatie</strong><br />{{ entry.location.address }}<br />
      <a href="https://www.google.com/maps/dir//{{ entry.location.address|url_encode }}/" target="_blank">Routebeschrijving</a>
      </p>{% endif %}

Additional info

• Craft version: 3.2.5.1
• Maps version: 3.6.1
• PHP version: 7.2.10
• Database driver & version: MySQL 5.7.23

[Tam]

@bartrylant Can you post any stacktraces related to the error (either from your web.log file or the template error screen)?

[bartrylant]

yii\base\ErrorException: First parameter must either be an object or the name of an existing class in /Users/user/Sites/***-dev-4/vendor/ether/simplemap/src/models/Map.php:103
Stack trace:
#0 /Users/user/Sites/***-dev-4/vendor/craftcms/cms/src/web/ErrorHandler.php(81): yii\base\ErrorHandler->handleError(2, 'First parameter...', '/Users/****...', 103)
#1 [internal function]: craft\web\ErrorHandler->handleError(2, 'First parameter...', '/Users/****...', 103, Array)
#2 /Users/user/Sites/***-dev-4/vendor/ether/simplemap/src/models/Map.php(103): property_exists(Array, 'address')
#3 /Users/user/Sites/***-dev-4/vendor/craftcms/cms/src/helpers/Template.php(61): ether\simplemap\models\Map->canGetProperty('address')
#4 /Users/user/Sites/***-dev-4/storage/runtime/compiled_templates/83/8363166daa70da327f215ad70043ce7a64301a384acb374cf9fb64625901a2e1.php(342): craft\helpers\Template::attribute(Object(craft\web\twig\Environment), Object(Twig\Source), Object(ether\simplemap\models\Map), 'address', Array)
#5 /Users/user/Sites/***-dev-4/vendor/twig/twig/src/Template.php(184): __TwigTemplate_e86f88ce7b539a853f17424279020d33b7040b05133abb0d66828af374fa40ad->block_content(Array, Array)
#6 /Users/user/Sites/***-dev-4/storage/runtime/compiled_templates/01/01d26c2ce348d46f7fd5a3f6f089bc809b1f1db15ebbea0919648b1cbeb5a2b4.php(93): Twig\Template->displayBlock('content', Array, Array)
#7 /Users/user/Sites/***-dev-4/vendor/twig/twig/src/Template.php(407): __TwigTemplate_ade78ab4a9bd088ca0b6a1489ed50187b856ea886657dc159181af2232c686f3->doDisplay(Array, Array)
#8 /Users/user/Sites/***-dev-4/vendor/craftcms/cms/src/web/twig/Template.php(52): Twig\Template->displayWithErrorHandling(Array, Array)
#9 /Users/user/Sites/***-dev-4/vendor/twig/twig/src/Template.php(380): craft\web\twig\Template->displayWithErrorHandling(Array, Array)
#10 /Users/user/Sites/***-dev-4/vendor/craftcms/cms/src/web/twig/Template.php(34): Twig\Template->display(Array, Array)
#11 /Users/user/Sites/***-dev-4/storage/runtime/compiled_templates/83/8363166daa70da327f215ad70043ce7a64301a384acb374cf9fb64625901a2e1.php(45): craft\web\twig\Template->display(Array, Array)
#12 /Users/user/Sites/***-dev-4/vendor/twig/twig/src/Template.php(407): __TwigTemplate_e86f88ce7b539a853f17424279020d33b7040b05133abb0d66828af374fa40ad->doDisplay(Array, Array)
#13 /Users/user/Sites/***-dev-4/vendor/craftcms/cms/src/web/twig/Template.php(52): Twig\Template->displayWithErrorHandling(Array, Array)
#14 /Users/user/Sites/***-dev-4/vendor/twig/twig/src/Template.php(380): craft\web\twig\Template->displayWithErrorHandling(Array, Array)
#15 /Users/user/Sites/***-dev-4/vendor/craftcms/cms/src/web/twig/Template.php(34): Twig\Template->display(Array, Array)
#16 /Users/user/Sites/***-dev-4/vendor/twig/twig/src/Template.php(392): craft\web\twig\Template->display(Array)
#17 /Users/user/Sites/***-dev-4/vendor/twig/twig/src/TemplateWrapper.php(45): Twig\Template->render(Array, Array)
#18 /Users/user/Sites/***-dev-4/vendor/twig/twig/src/Environment.php(318): Twig\TemplateWrapper->render(Array)
#19 /Users/user/Sites/***-dev-4/vendor/craftcms/cms/src/web/View.php(343): Twig\Environment->render('wedstrijdkalend...', Array)
#20 /Users/user/Sites/***-dev-4/vendor/craftcms/cms/src/web/View.php(393): craft\web\View->renderTemplate('wedstrijdkalend...', Array)
#21 /Users/user/Sites/***-dev-4/vendor/craftcms/cms/src/web/Controller.php(243): craft\web\View->renderPageTemplate('wedstrijdkalend...', Array)
#22 /Users/user/Sites/***-dev-4/vendor/craftcms/cms/src/controllers/TemplatesController.php(95): craft\web\Controller->renderTemplate('wedstrijdkalend...', Array)
#23 [internal function]: craft\controllers\TemplatesController->actionRender('wedstrijdkalend...', Array)
#24 /Users/user/Sites/***-dev-4/vendor/yiisoft/yii2/base/InlineAction.php(57): call_user_func_array(Array, Array)
#25 /Users/user/Sites/***-dev-4/vendor/yiisoft/yii2/base/Controller.php(157): yii\base\InlineAction->runWithParams(Array)
#26 /Users/user/Sites/***-dev-4/vendor/craftcms/cms/src/web/Controller.php(187): yii\base\Controller->runAction('render', Array)
#27 /Users/user/Sites/***-dev-4/vendor/yiisoft/yii2/base/Module.php(528): craft\web\Controller->runAction('render', Array)
#28 /Users/user/Sites/***-dev-4/vendor/craftcms/cms/src/web/Application.php(299): yii\base\Module->runAction('templates/rende...', Array)
#29 /Users/user/Sites/***-dev-4/vendor/yiisoft/yii2/web/Application.php(103): craft\web\Application->runAction('templates/rende...', Array)
#30 /Users/user/Sites/***-dev-4/vendor/craftcms/cms/src/web/Application.php(284): yii\web\Application->handleRequest(Object(craft\web\Request))
#31 /Users/user/Sites/***-dev-4/vendor/yiisoft/yii2/base/Application.php(386): craft\web\Application->handleRequest(Object(craft\web\Request))
#32 /Users/user/Sites/***-dev-4/web/index.php(21): yii\base\Application->run()
#33 {main}

[amici-infotech]

Hey, I have the same issue with the latest version. If I change the code from this:

try
{
	if (
		property_exists($this->parts, $name) ||
		$name === 'streetAddress' ||
		in_array($name, PartsLegacy::$legacyKeys)
	) return true;
} catch (\Exception $e) {
	return false;
}

to this:

try
{

	if(is_array($this->parts)) $this->parts = (object) $this->parts;
	
	if (
		property_exists($this->parts, $name) ||
		$name === 'streetAddress' ||
		in_array($name, PartsLegacy::$legacyKeys)
	) return true;
} catch (\Exception $e) {
	return false;
}

it works. here is my trace:

{"error":"property_exists(): Argument #1 ($object_or_class) must be of type object|string, array given","exception":"TypeError","file":"/var/www/MYSITE/htdocs/vendor/ether/simplemap/src/models/Map.php","line":84,"trace":[{"file":"/var/www/MYSITE/htdocs/vendor/ether/simplemap/src/models/Map.php","line":84,"function":"property_exists"},{"file":"/var/www/MYSITE/htdocs/vendor/craftcms/cms/src/helpers/Template.php","line":88,"function":"canGetProperty","class":"ether\\simplemap\\models\\Map","type":"->"},{"file":"/var/www/MYSITE/htdocs/storage/runtime/compiled_templates/4a/4aa09ec8cd5b04877ff5e8e385236d22.php","line":38,"function":"attribute","class":"craft\\helpers\\Template","type":"::"},{"file":"/var/www/MYSITE/htdocs/vendor/twig/twig/src/Template.php","line":405,"function":"doDisplay","class":"__TwigTemplate_74203994ecd26b2d906897c6644efb3f","type":"->"},{"file":"/var/www/MYSITE/htdocs/vendor/twig/twig/src/Template.php","line":378,"function":"displayWithErrorHandling","class":"Twig\\Template","type":"->"},{"file":"/var/www/MYSITE/htdocs/vendor/twig/twig/src/Template.php","line":390,"function":"display","class":"Twig\\Template","type":"->"},{"file":"/var/www/MYSITE/htdocs/vendor/twig/twig/src/TemplateWrapper.php","line":45,"function":"render","class":"Twig\\Template","type":"->"},{"file":"/var/www/MYSITE/htdocs/vendor/craftcms/cms/src/web/View.php","line":623,"function":"render","class":"Twig\\TemplateWrapper","type":"->"},{"file":"/var/www/MYSITE/htdocs/vendor/craftcms/cms/src/elements/Entry.php","line":1526,"function":"renderObjectTemplate","class":"craft\\web\\View","type":"->"},{"file":"/var/www/MYSITE/htdocs/vendor/craftcms/cms/src/elements/Entry.php","line":1617,"function":"updateTitle","class":"craft\\elements\\Entry","type":"->"},{"file":"/var/www/MYSITE/htdocs/vendor/craftcms/cms/src/services/Elements.php","line":2496,"function":"beforeSave","class":"craft\\elements\\Entry","type":"->"},{"file":"/var/www/MYSITE/htdocs/vendor/craftcms/cms/src/services/Elements.php","line":784,"function":"_saveElementInternal","class":"craft\\services\\Elements","type":"->"},{"file":"/var/www/MYSITE/htdocs/vendor/craftcms/cms/src/controllers/EntriesController.php","line":403,"function":"saveElement","class":"craft\\services\\Elements","type":"->"},{"function":"actionSaveEntry","class":"craft\\controllers\\EntriesController","type":"->"},{"file":"/var/www/MYSITE/htdocs/vendor/yiisoft/yii2/base/InlineAction.php","line":57,"function":"call_user_func_array"},{"file":"/var/www/MYSITE/htdocs/vendor/yiisoft/yii2/base/Controller.php","line":178,"function":"runWithParams","class":"yii\\base\\InlineAction","type":"->"},{"file":"/var/www/MYSITE/htdocs/vendor/yiisoft/yii2/base/Module.php","line":552,"function":"runAction","class":"yii\\base\\Controller","type":"->"},{"file":"/var/www/MYSITE/htdocs/vendor/craftcms/cms/src/web/Application.php","line":293,"function":"runAction","class":"yii\\base\\Module","type":"->"},{"file":"/var/www/MYSITE/htdocs/vendor/craftcms/cms/src/web/Application.php","line":602,"function":"runAction","class":"craft\\web\\Application","type":"->"},{"file":"/var/www/MYSITE/htdocs/vendor/craftcms/cms/src/web/Application.php","line":272,"function":"_processActionRequest","class":"craft\\web\\Application","type":"->"},{"file":"/var/www/MYSITE/htdocs/vendor/yiisoft/yii2/base/Application.php","line":384,"function":"handleRequest","class":"craft\\web\\Application","type":"->"},{"file":"/var/www/MYSITE/htdocs/web/index.php","line":22,"function":"run","class":"yii\\base\\Application","type":"->"}]}

[AdamADigital]

I'm having the same issue. I found converting parts to an object wasn't enough, I had to make it an instance of Parts, thus:

if(is_array($this->parts)) 
                $this->parts = new Parts($this->parts);

[jamesmacwhite]

I'm guessing this is still present for newer PHP versions i.e. 8/8.1.

Edit: It seems to be when map field data hasn't been properly created. A process was mapping data to the map field from FeedMe, but when resaving the entry in the control panel after this, no more error.