I've got a fresh install of Magento 2.0. I've created my websites and stores, added my product categories, done some basic configuration; setting email addresses, locale, currency, etc. I've also enabled flat categories and products and disabled caching.
I'm ready to add products, but Magento just won't do it. I enter the product name, sku, category, price, and description, but when I hit save, it all falls in a heap and I get a screen full of this;
[EDIT] I've tried disabling the flat product and flat category and the problem doesn't occur. Magento has a bug that prevents products being added when these are enabled. Even worse is that once you attempt to add a product with flat product and flat category enabled it get's itself ties up in knots and it's not possible to get back to a stable state. This suggests an improper implementation of database transactions that leads to artifacts being left in the database after failures.
exception 'Magento\Framework\Exception\LocalizedException' with message 'The specified "/var/www/html/magento/var/generation/Magento/Catalog/Model/Indexer/Product/Flat/Interceptor.php.1547" file could not be written Warning!file_put_contents(/var/www/html/magento/var/generation/Magento/Catalog/Model/Indexer/Product/Flat/Interceptor.php.1547): failed to open stream: Permission denied' in /var/www/html/magento/vendor/magento/framework/Code/Generator.php:103 Stack trace: #0 /var/www/html/magento/vendor/magento/framework/Code/Generator/Autoloader.php(35): Magento\Framework\Code\Generator->generateClass('Magento\Catalog...') #1 [internal function]: Magento\Framework\Code\Generator\Autoloader->load('Magento\Catalog...') #2 [internal function]: spl_autoload_call('Magento\Catalog...') #3 /var/www/html/magento/vendor/magento/framework/Code/Reader/ClassReader.php(19): ReflectionClass->__construct('Magento\Catalog...') #4 /var/www/html/magento/vendor/magento/framework/ObjectManager/Definition/Runtime.php(44): Magento\Framework\Code\Reader\ClassReader->getConstructor('Magento\Catalog...') #5 /var/www/html/magento/vendor/magento/framework/ObjectManager/Factory/Dynamic/Developer.php(71): Magento\Framework\ObjectManager\Definition\Runtime->getParameters('Magento\Catalog...') #6 /var/www/html/magento/vendor/magento/framework/ObjectManager/ObjectManager.php(57): Magento\Framework\ObjectManager\Factory\Dynamic\Developer->create('Magento\Catalog...', Array) #7 /var/www/html/magento/vendor/magento/framework/Indexer/ActionFactory.php(35): Magento\Framework\ObjectManager\ObjectManager->create('Magento\Catalog...', Array) #8 /var/www/html/magento/vendor/magento/module-indexer/Model/Indexer.php(380): Magento\Framework\Indexer\ActionFactory->create('Magento\Catalog...', Array) #9 /var/www/html/magento/vendor/magento/module-indexer/Model/Indexer.php(433): Magento\Indexer\Model\Indexer->getActionInstance() #10 /var/www/html/magento/vendor/magento/module-catalog/Model/Indexer/Product/Flat/Processor.php(43): Magento\Indexer\Model\Indexer->reindexRow('1') #11 /var/www/html/magento/vendor/magento/module-catalog/Model/Product.php(1008): Magento\Catalog\Model\Indexer\Product\Flat\Processor->reindexRow('1') #12 /var/www/html/magento/var/generation/Magento/Catalog/Model/Product/Interceptor.php(440): Magento\Catalog\Model\Product->reindex() #13 [internal function]: Magento\Catalog\Model\Product\Interceptor->reindex() #14 /var/www/html/magento/vendor/magento/framework/Model/ResourceModel/AbstractResource.php(94): call_user_func(Array) #15 /var/www/html/magento/var/generation/Magento/Catalog/Model/ResourceModel/Product/Interceptor.php(713): Magento\Framework\Model\ResourceModel\AbstractResource->commit() #16 /var/www/html/magento/vendor/magento/module-eav/Model/Entity/AbstractEntity.php(1156): Magento\Catalog\Model\ResourceModel\Product\Interceptor->commit() #17 [internal function]: Magento\Eav\Model\Entity\AbstractEntity->save(Object(Magento\Catalog\Model\Product\Interceptor)) #18 /var/www/html/magento/vendor/magento/framework/Interception/Interceptor.php(74): call_user_func_array(Array, Array) #19 /var/www/html/magento/vendor/magento/framework/Interception/Chain/Chain.php(70): Magento\Catalog\Model\ResourceModel\Product\Interceptor->___callParent('save', Array) #20 /var/www/html/magento/vendor/magento/framework/Interception/Chain/Chain.php(63): Magento\Framework\Interception\Chain\Chain->invokeNext('Magento\Catalog...', 'save', Object(Magento\Catalog\Model\ResourceModel\Product\Interceptor), Array, 'catalogsearchFu...') #21 /var/www/html/magento/vendor/magento/module-catalog-search/Model/Indexer/Fulltext/Plugin/Product.php(28): Magento\Framework\Interception\Chain\Chain->Magento\Framework\Interception\Chain\{closure}(Object(Magento\Catalog\Model\Product\Interceptor)) #22 [internal function]: Magento\CatalogSearch\Model\Indexer\Fulltext\Plugin\Product->aroundSave(Object(Magento\Catalog\Model\ResourceModel\Product\Interceptor), Object(Closure), Object(Magento\Catalog\Model\Product\Interceptor)) #23 /var/www/html/magento/vendor/magento/framework/Interception/Chain/Chain.php(68): call_user_func_array(Array, Array) #24 /var/www/html/magento/vendor/magento/framework/Interception/Interceptor.php(136): Magento\Framework\Interception\Chain\Chain->invokeNext('Magento\Catalog...', 'save', Object(Magento\Catalog\Model\ResourceModel\Product\Interceptor), Array, 'apply_catalog_r...') #25 /var/www/html/magento/vendor/magento/module-catalog-rule/Plugin/Indexer/Product/Save/ApplyRules.php(40): Magento\Catalog\Model\ResourceModel\Product\Interceptor->Magento\Framework\Interception\{closure}(Object(Magento\Catalog\Model\Product\Interceptor)) #26 [internal function]: Magento\CatalogRule\Plugin\Indexer\Product\Save\ApplyRules->aroundSave(Object(Magento\Catalog\Model\ResourceModel\Product\Interceptor), Object(Closure), Object(Magento\Catalog\Model\Product\Interceptor)) #27 /var/www/html/magento/vendor/magento/framework/Interception/Interceptor.php(141): call_user_func_array(Array, Array) #28 /var/www/html/magento/var/generation/Magento/Catalog/Model/ResourceModel/Product/Interceptor.php(650): Magento\Catalog\Model\ResourceModel\Product\Interceptor->___callPlugins('save', Array, Array) #29 /var/www/html/magento/vendor/magento/framework/Model/AbstractModel.php(615): Magento\Catalog\Model\ResourceModel\Product\Interceptor->save(Object(Magento\Catalog\Model\Product\Interceptor)) #30 /var/www/html/magento/var/generation/Magento/Catalog/Model/Product/Interceptor.php(2351): Magento\Framework\Model\AbstractModel->save() #31 /var/www/html/magento/vendor/magento/module-catalog/Controller/Adminhtml/Product/Save.php(84): Magento\Catalog\Model\Product\Interceptor->save() #32 /var/www/html/magento/var/generation/Magento/Catalog/Controller/Adminhtml/Product/Save/Interceptor.php(24): Magento\Catalog\Controller\Adminhtml\Product\Save->execute() #33 /var/www/html/magento/vendor/magento/framework/App/Action/Action.php(102): Magento\Catalog\Controller\Adminhtml\Product\Save\Interceptor->execute() #34 /var/www/html/magento/vendor/magento/module-backend/App/AbstractAction.php(226): Magento\Framework\App\Action\Action->dispatch(Object(Magento\Framework\App\Request\Http)) #35 [internal function]: Magento\Backend\App\AbstractAction->dispatch(Object(Magento\Framework\App\Request\Http)) #36 /var/www/html/magento/vendor/magento/framework/Interception/Interceptor.php(74): call_user_func_array(Array, Array) #37 /var/www/html/magento/vendor/magento/framework/Interception/Chain/Chain.php(70): Magento\Catalog\Controller\Adminhtml\Product\Save\Interceptor->___callParent('dispatch', Array) #38 /var/www/html/magento/vendor/magento/framework/Interception/Chain/Chain.php(63): Magento\Framework\Interception\Chain\Chain->invokeNext('Magento\Catalog...', 'dispatch', Object(Magento\Catalog\Controller\Adminhtml\Product\Save\Interceptor), Array, 'adminAuthentica...') #39 /var/www/html/magento/vendor/magento/module-backend/App/Action/Plugin/Authentication.php(143): Magento\Framework\Interception\Chain\Chain->Magento\Framework\Interception\Chain\{closure}(Object(Magento\Framework\App\Request\Http)) #40 [internal function]: Magento\Backend\App\Action\Plugin\Authentication->aroundDispatch(Object(Magento\Catalog\Controller\Adminhtml\Product\Save\Interceptor), Object(Closure), Object(Magento\Framework\App\Request\Http)) #41 /var/www/html/magento/vendor/magento/framework/Interception/Chain/Chain.php(68): call_user_func_array(Array, Array) #42 /var/www/html/magento/vendor/magento/framework/Interception/Chain/Chain.php(63): Magento\Framework\Interception\Chain\Chain->invokeNext('Magento\Catalog...', 'dispatch', Object(Magento\Catalog\Controller\Adminhtml\Product\Save\Interceptor), Array, 'designLoader') #43 /var/www/html/magento/vendor/magento/framework/App/Action/Plugin/Design.php(39): Magento\Framework\Interception\Chain\Chain->Magento\Framework\Interception\Chain\{closure}(Object(Magento\Framework\App\Request\Http)) #44 [internal function]: Magento\Framework\App\Action\Plugin\Design->aroundDispatch(Object(Magento\Catalog\Controller\Adminhtml\Product\Save\Interceptor), Object(Closure), Object(Magento\Framework\App\Request\Http)) #45 /var/www/html/magento/vendor/magento/framework/Interception/Chain/Chain.php(68): call_user_func_array(Array, Array) #46 /var/www/html/magento/vendor/magento/framework/Interception/Interceptor.php(136): Magento\Framework\Interception\Chain\Chain->invokeNext('Magento\Catalog...', 'dispatch', Object(Magento\Catalog\Controller\Adminhtml\Product\Save\Interceptor), Array, 'adminMassaction...') #47 /var/www/html/magento/vendor/magento/module-backend/App/Action/Plugin/MassactionKey.php(33): Magento\Catalog\Controller\Adminhtml\Product\Save\Interceptor->Magento\Framework\Interception\{closure}(Object(Magento\Framework\App\Request\Http)) #48 [internal function]: Magento\Backend\App\Action\Plugin\MassactionKey->aroundDispatch(Object(Magento\Catalog\Controller\Adminhtml\Product\Save\Interceptor), Object(Closure), Object(Magento\Framework\App\Request\Http)) #49 /var/www/html/magento/vendor/magento/framework/Interception/Interceptor.php(141): call_user_func_array(Array, Array) #50 /var/www/html/magento/var/generation/Magento/Catalog/Controller/Adminhtml/Product/Save/Interceptor.php(39): Magento\Catalog\Controller\Adminhtml\Product\Save\Interceptor->___callPlugins('dispatch', Array, Array) #51 /var/www/html/magento/vendor/magento/framework/App/FrontController.php(55): Magento\Catalog\Controller\Adminhtml\Product\Save\Interceptor->dispatch(Object(Magento\Framework\App\Request\Http)) #52 [internal function]: Magento\Framework\App\FrontController->dispatch(Object(Magento\Framework\App\Request\Http)) #53 /var/www/html/magento/vendor/magento/framework/Interception/Interceptor.php(74): call_user_func_array(Array, Array) #54 /var/www/html/magento/vendor/magento/framework/Interception/Chain/Chain.php(70): Magento\Framework\App\FrontController\Interceptor->___callParent('dispatch', Array) #55 /var/www/html/magento/vendor/magento/framework/Interception/Interceptor.php(136): Magento\Framework\Interception\Chain\Chain->invokeNext('Magento\Framewo...', 'dispatch', Object(Magento\Framework\App\FrontController\Interceptor), Array, 'install') #56 /var/www/html/magento/vendor/magento/framework/Module/Plugin/DbStatusValidator.php(69): Magento\Framework\App\FrontController\Interceptor->Magento\Framework\Interception\{closure}(Object(Magento\Framework\App\Request\Http)) #57 [internal function]: Magento\Framework\Module\Plugin\DbStatusValidator->aroundDispatch(Object(Magento\Framework\App\FrontController\Interceptor), Object(Closure), Object(Magento\Framework\App\Request\Http)) #58 /var/www/html/magento/vendor/magento/framework/Interception/Interceptor.php(141): call_user_func_array(Array, Array) #59 /var/www/html/magento/var/generation/Magento/Framework/App/FrontController/Interceptor.php(26): Magento\Framework\App\FrontController\Interceptor->___callPlugins('dispatch', Array, Array) #60 /var/www/html/magento/vendor/magento/framework/App/Http.php(115): Magento\Framework\App\FrontController\Interceptor->dispatch(Object(Magento\Framework\App\Request\Http)) #61 /var/www/html/magento/vendor/magento/framework/App/Bootstrap.php(258): Magento\Framework\App\Http->launch() #62 /var/www/html/magento/index.php(39): Magento\Framework\App\Bootstrap->run(Object(Magento\Framework\App\Http)) #63 {main}
