pinject | PHP依赖注入实现 - Inject in PHP
kandi X-RAY | pinject Summary
kandi X-RAY | pinject Summary
Inject in PHP !.
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Top functions reviewed by kandi - BETA
- Produces an object from cache
- Apply a set of parameters
- Build a concrete .
- Run the chain .
- Creates a callback function that invokes the callback .
- Set the value at the specified offset .
- Run a wildcard .
- Run the request using a callback .
- Set data .
- Add handlers to the chain
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QUESTION
Good day! Please tell me how you can solve the following problem in Python + FastAPI.
There is a test project:
...ANSWER
Answered 2020-Oct-05 at 12:37As noted in the comments, a dependency can be anything that is a callable and thus a class as well. The only caveat in the latter case is that the class will only be initialized (i.e. only the init(..) function will be called).
So, in order to have a class as dependency, as in the example of https://fastapi.tiangolo.com/tutorial/dependencies/classes-as-dependencies/#shortcut you just need to call the target functions within the init and set the values as attributes of the class.
QUESTION
I have 5 classes as shown below. The execution starts at class 5. Here dependency injection is being used as the listener object is passed to the constructor of the Bot
class and then that object calls listen() method. This part is fine.
The trouble starts from now on.
From the listen()
method I call another method called process()
which is in the Processor
class (processor.py
file). Then the process()
method calls two other methods from 2 different classes Tokenizer
and Core
.
As you can see all these are coupled and dependency injection is not used here. I'm not sure how to.
I have tried out examples of python dependency-injector
package and pinject
package but those examples relate with single level dependencies and not cases like this as far as I can understand.
I have thought of creating all required objects in one module and passing it as parameters to all classes when required. But that doesn't seem like a good practice.
What can I do to decouple the above code? How should I go about modularizing this?
...ANSWER
Answered 2020-Apr-10 at 16:47I think you can rethinking this design having in mind two concepts:
- Python Multiple Inheritance to design your classes.
- Usage of super() and Python's Method Resolution Order (MRO) to inject mocks for classes' dependencies within test code.
Regarding the first point, your classes will look like:
QUESTION
I want to use dependency injection for my django project. For that I'm trying pinject package. Like in ASP.NET, all the dependencies are given in the constructor, and that's very nice because it's easy to test. I would also like to archive something similar in my django project.
I have a simple View:
...ANSWER
Answered 2019-Aug-08 at 20:38If your goal is to provide yourself with an easy and safe way to 'mock and test', then you are probably better of using the mock library provided by unittest
(which by the way is also a lot like mocking in .NET). With this, you can do something like this:
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