Error: Call to a member function getDatasources()

Error: Call to a member function getDatasources() on null in Drupal\leaflet_views\Plugin\views\style\LeafletMap->init() (line 297 of web/modules/contrib/leaflet/modules/leaflet_views/src/Plugin/views/style/LeafletMap.php).

#0 web/core/modules/views/src/Plugin/views/display/DisplayPluginBase.php(824): Drupal\leaflet_views\Plugin\views\style\LeafletMap->init(Object(Drupal\views\ViewExecutable), Object(Drupal\views\Plugin\views\display\Page), Array) #1 web/core/modules/views/src/ViewExecutable.php(897): Drupal\views\Plugin\views\display\DisplayPluginBase->getPlugin('style') #2 web/core/modules/views/src/ViewExecutable.php(877): Drupal\views\ViewExecutable->initStyle() #3 web/core/modules/views/src/Plugin/views/field/FieldPluginBase.php(476): Drupal\views\ViewExecutable->getStyle() #4 web/modules/contrib/views_database_connector/src/Plugin/views/field/StandardVDC.php(22): Drupal\views\Plugin\views\field\FieldPluginBase->defineOptions() #5 web/core/modules/views/src/Plugin/views/PluginBase.php(143): Drupal\views_database_connector\Plugin\views\field\StandardVDC->defineOptions() #6 web/core/modules/views/src/Plugin/views/HandlerBase.php(109): Drupal\views\Plugin\views\PluginBase->init(Object(Drupal\views\ViewExecutable), Object(Drupal\views\Plugin\views\display\Page), Array) #7 web/core/modules/views/src/Plugin/views/field/FieldPluginBase.php(136): Drupal\views\Plugin\views\HandlerBase->init(Object(Drupal\views\ViewExecutable), Object(Drupal\views\Plugin\views\display\Page), Array) #8 web/core/modules/views/src/Plugin/views/display/DisplayPluginBase.php(899): Drupal\views\Plugin\views\field\FieldPluginBase->init(Object(Drupal\views\ViewExecutable), Object(Drupal\views\Plugin\views\display\Page), Array) #9 web/core/modules/views/src/ViewExecutable.php(1055): Drupal\views\Plugin\views\display\DisplayPluginBase->getHandlers('field') #10 web/core/modules/views/src/ViewExecutable.php(913): Drupal\views\ViewExecutable->_initHandler('field', Array) #11 web/modules/custom/sy3_hacks/src/Plugin/Block/VefcBlock.php(93): Drupal\views\ViewExecutable->initHandlers() #12 web/modules/custom/sy3_hacks/src/Plugin/Block/VefcBlock.php(71): Drupal\sy3_hacks\Plugin\Block\VefcBlock->getBlock('page_12', 'dashboard_view') #13 web/core/modules/block/src/BlockViewBuilder.php(171): Drupal\sy3_hacks\Plugin\Block\VefcBlock->build() #14 [internal function]: Drupal\block\BlockViewBuilder::preRender(Array) #15 web/core/lib/Drupal/Core/Security/DoTrustedCallbackTrait.php(111): call_user_func_array('Drupal\\block\\Bl...', Array) #16 web/core/lib/Drupal/Core/Render/Renderer.php(859): Drupal\Core\Render\Renderer->doTrustedCallback('Drupal\\block\\Bl...', Array, 'Render #pre_ren...', 'exception', 'Drupal\\Core\\Ren...') #17 web/core/lib/Drupal/Core/Render/Renderer.php(421): Drupal\Core\Render\Renderer->doCallback('#pre_render', 'Drupal\\block\\Bl...', Array) #18 web/core/lib/Drupal/Core/Render/Renderer.php(493): Drupal\Core\Render\Renderer->doRender(Array) #19 web/core/lib/Drupal/Core/Render/Renderer.php(240): Drupal\Core\Render\Renderer->doRender(Array, false) #20 web/core/lib/Drupal/Core/Template/TwigExtension.php(475): Drupal\Core\Render\Renderer->render(Array) #21 web/sites/default/files/php/twig/6662e5ec95032_page.html.twig_QRa7V8GSTc9YqlWXyidtKfdW3/PEr5fTNZxlSRRFAkVieps1Rq8unIDhbmTSBtnEySxyA.php(399): Drupal\Core\Template\TwigExtension->escapeFilter(Object(Drupal\Core\Template\TwigEnvironment), Array, 'html', NULL, true) #22 vendor/twig/twig/src/Template.php(171): __TwigTemplate_789c01d3a9c76fadcebe39955c78daf1___1461188561->block_page_content(Array, Array) #23 web/sites/default/files/php/twig/6662e5ec95032__default.twig_giomI8i-KRgXXm9qN8kMGljhW/IkEsLCzTbOHZiYmt1a0qIUI4wRCSRl49r241iUBdraU.php(178): Twig\Template->displayBlock('page_content', Array, Array) #24 vendor/twig/twig/src/Template.php(394): __TwigTemplate_90a266794dd2017228589fa81ef27408->doDisplay(Array, Array) #25 vendor/twig/twig/src/Template.php(367): Twig\Template->displayWithErrorHandling(Array, Array) #26 web/sites/default/files/php/twig/6662e5ec95032_page.html.twig_QRa7V8GSTc9YqlWXyidtKfdW3/PEr5fTNZxlSRRFAkVieps1Rq8unIDhbmTSBtnEySxyA.php(253): Twig\Template->display(Array, Array) #27 vendor/twig/twig/src/Template.php(394): __TwigTemplate_789c01d3a9c76fadcebe39955c78daf1___1461188561->doDisplay(Array, Array) #28 vendor/twig/twig/src/Template.php(367): Twig\Template->displayWithErrorHandling(Array, Array) #29 web/sites/default/files/php/twig/6662e5ec95032_page.html.twig_QRa7V8GSTc9YqlWXyidtKfdW3/PEr5fTNZxlSRRFAkVieps1Rq8unIDhbmTSBtnEySxyA.php(143): Twig\Template->display(Array) #30 vendor/twig/twig/src/Template.php(394): __TwigTemplate_789c01d3a9c76fadcebe39955c78daf1->doDisplay(Array, Array) #31 vendor/twig/twig/src/Template.php(367): Twig\Template->displayWithErrorHandling(Array, Array) #32 vendor/twig/twig/src/Template.php(379): Twig\Template->display(Array) #33 vendor/twig/twig/src/TemplateWrapper.php(38): Twig\Template->render(Array) #34 web/core/themes/engines/twig/twig.engine(39): Twig\TemplateWrapper->render(Array) #35 web/core/lib/Drupal/Core/Theme/ThemeManager.php(348): twig_render_template('themes/custom/w...', Array) #36 web/core/lib/Drupal/Core/Render/Renderer.php(480): Drupal\Core\Theme\ThemeManager->render('page', Array) #37 web/core/lib/Drupal/Core/Render/Renderer.php(240): Drupal\Core\Render\Renderer->doRender(Array, false) #38 web/core/lib/Drupal/Core/Template/TwigExtension.php(475): Drupal\Core\Render\Renderer->render(Array) #39 web/sites/default/files/php/twig/6662e5ec95032_html.html.twig_VjhwLmO1zf7GJTwXBSFW1NHHS/V3YhnUvHBZp2m5omp7Yu6Blj25NYgsasHhkXocbQyhM.php(89): Drupal\Core\Template\TwigExtension->escapeFilter(Object(Drupal\Core\Template\TwigEnvironment), Array, 'html', NULL, true) #40 vendor/twig/twig/src/Template.php(394): __TwigTemplate_ac8225b436c7f40eba8dcf4852df0f7e->doDisplay(Array, Array) #41 vendor/twig/twig/src/Template.php(367): Twig\Template->displayWithErrorHandling(Array, Array) #42 vendor/twig/twig/src/Template.php(379): Twig\Template->display(Array) #43 vendor/twig/twig/src/TemplateWrapper.php(38): Twig\Template->render(Array) #44 web/core/themes/engines/twig/twig.engine(39): Twig\TemplateWrapper->render(Array) #45 web/core/lib/Drupal/Core/Theme/ThemeManager.php(348): twig_render_template('themes/custom/w...', Array) #46 web/core/lib/Drupal/Core/Render/Renderer.php(480): Drupal\Core\Theme\ThemeManager->render('html', Array) #47 web/core/lib/Drupal/Core/Render/Renderer.php(240): Drupal\Core\Render\Renderer->doRender(Array, false) #48 web/core/lib/Drupal/Core/Render/MainContent/HtmlRenderer.php(158): Drupal\Core\Render\Renderer->render(Array) #49 web/core/lib/Drupal/Core/Render/Renderer.php(627): Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() #50 web/core/lib/Drupal/Core/Render/MainContent/HtmlRenderer.php(159): Drupal\Core\Render\Renderer->executeInRenderContext(Object(Drupal\Core\Render\RenderContext), Object(Closure)) #51 web/core/lib/Drupal/Core/EventSubscriber/MainContentViewSubscriber.php(90): Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse(Array, Object(Symfony\Component\HttpFoundation\Request), Object(Drupal\Core\Routing\CurrentRouteMatch)) #52 [internal function]: Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray(Object(Symfony\Component\HttpKernel\Event\ViewEvent), 'kernel.view', Object(Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher)) #53 web/core/lib/Drupal/Component/EventDispatcher/ContainerAwareEventDispatcher.php(111): call_user_func(Array, Object(Symfony\Component\HttpKernel\Event\ViewEvent), 'kernel.view', Object(Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher)) #54 vendor/symfony/http-kernel/HttpKernel.php(186): Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch(Object(Symfony\Component\HttpKernel\Event\ViewEvent), 'kernel.view') #55 vendor/symfony/http-kernel/HttpKernel.php(76): Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object(Symfony\Component\HttpFoundation\Request), 1) #56 web/core/lib/Drupal/Core/StackMiddleware/Session.php(58): Symfony\Component\HttpKernel\HttpKernel->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true) #57 web/core/lib/Drupal/Core/StackMiddleware/KernelPreHandle.php(48): Drupal\Core\StackMiddleware\Session->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true) #58 web/core/lib/Drupal/Core/StackMiddleware/ContentLength.php(28): Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true) #59 web/core/modules/big_pipe/src/StackMiddleware/ContentLength.php(32): Drupal\Core\StackMiddleware\ContentLength->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true) #60 web/core/modules/page_cache/src/StackMiddleware/PageCache.php(106): Drupal\big_pipe\StackMiddleware\ContentLength->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true) #61 web/core/modules/page_cache/src/StackMiddleware/PageCache.php(85): Drupal\page_cache\StackMiddleware\PageCache->pass(Object(Symfony\Component\HttpFoundation\Request), 1, true) #62 web/core/modules/ban/src/BanMiddleware.php(50): Drupal\page_cache\StackMiddleware\PageCache->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true) #63 web/core/lib/Drupal/Core/StackMiddleware/ReverseProxyMiddleware.php(48): Drupal\ban\BanMiddleware->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true) #64 web/core/lib/Drupal/Core/StackMiddleware/NegotiationMiddleware.php(51): Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true) #65 web/core/lib/Drupal/Core/StackMiddleware/AjaxPageState.php(36): Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true) #66 web/core/lib/Drupal/Core/StackMiddleware/StackedHttpKernel.php(51): Drupal\Core\StackMiddleware\AjaxPageState->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true) #67 web/core/lib/Drupal/Core/DrupalKernel.php(704): Drupal\Core\StackMiddleware\StackedHttpKernel->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true) #68 web/index.php(19): Drupal\Core\DrupalKernel->handle(Object(Symfony\Component\HttpFoundation\Request)) #69 {main}

Comments & Activities

Issue created by @tsega
Comment over 1 year ago →
🇪🇹Ethiopia tsega
Patch to stop fatal error.
Status changed to Postponed: needs info over 1 year ago3:23pm 25 June 2024
Comment over 1 year ago →
🇮🇹Italy itamair
This issue / report definitely needs some more context info.
I tried to reproduce this, with a Search API based Leaflet View and I couldn't reproduce any use case where:

is_null($index) === TRUE

Bug Issues shouldn't be reported just copy - pasting the error message and its stack trace.

@tsega could you provide more details on your use case and better explain how to reproduce it and have evidence of the bug you report (on a general basis).
Status changed to Closed: cannot reproduce about 1 year ago8:52am 24 August 2024
Comment about 1 year ago →
🇮🇹Italy itamair
Closing this for lack of activity and feedback.
Comment 2 months ago →
🇬🇧United Kingdom ded
We were also experiencing this issue and had used the patch to correct it. Recently though we have discovered that the patch was causing issues with changing configuration of views based on Search API and using Leaflet.

Investigating the patch, it was discovered to be invalid PHP syntax.
foreach (!is_null($index) && $index->getDatasources() as $datasource) {

If this is split out to be an if statement then it does work and solves the problem and doesn't cause issues with view configuration.

I'm not sure how to replicate but our debugging shows that the error is thrown when $base_table = 'localgov_geo_field_data' and therefore the $index_id = 'd_data'. This will return null for $index so the error is thrown.

I am trying to understand if checking for a null $index is the correct way to go where this happens or if there is another approach.
Comment about 2 months ago →
🇮🇹Italy itamair
Hi @here ...
could you check, and and review the attache patch, that looks to me the best fixing / defensive code to skip the reported error, in the singular case where $index turns out to be null?
Comment about 2 months ago →
🇬🇧United Kingdom ded
Hi itamair,

yes that is good and solves the issue
Comment about 2 months ago →
System Message

itamair → committed 7d825ed5 on 10.3.x
[#3453183] feat: Error: Call to a member function getDatasources() By:...
Comment about 2 months ago →
🇮🇹Italy itamair
thanks all. Committed into 10.3.x branch, will be parto of next Drupal Leaflet release.

Error: Call to a member function getDatasources()

Problem/Motivation

Proposed resolution

Comments & Activities