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Is there a class for Magento 2 in setup?
Magento2 depends on namespaces to separate and locate modules and classes.
Is there a class Comstar \\ TLI \\ carrier in Magento?
The Class Comstar\\Tli\\Model\\Carrier clearly exists, and as I said, this module worked in 2.0.7. I did a quick review of Magento_Ups to see if anything major changed in the way shipping modules are loaded, but it doesn’t appear to be built any differently.
Is there a myinstaller class in PHP Magento?
MyInstaller class exists, however I changed path to the class file. Originally, there was path /my-libraries/MyInstaller.php, but when I tested it locally, I had error as above:
Why is there no namespace in myinstaller class?
I add, there is no namespace in MyInstaller class because I use the same file in another modules. But, I think they are not necessary if on localhost there is no error.
When do invalid block types occur in Magento?
It occurs when I want to open the form to create or edit a custom entity while the grid works fine.
How to check if a module is enabled / disabled in Magento 2?
For storeview no 1. this module in disabled (Storev-Config-Developer-Advanced) and for storeview no 2 this module is enabled. Even the module is disabled on sotreview no 1, the observer still work on both stores and it redirect me.
How to inject a dependency in Magento 2?
If you want to inject dependency into a particular class, you can simply do it by using two types of Dependency Injections in Magento 2. Constructor Injection is one of the commonly used ways to inject dependencies in Magento 2. In this type of DI, all you need to do is add a parameter in the class constructor to inject the dependency.