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Why does Laravel prefer constructor injection over manual service resolution inside controller methods?

hard📝 Conceptual Q10 of 15
Laravel - Controllers
Why does Laravel prefer constructor injection over manual service resolution inside controller methods?
AConstructor injection promotes loose coupling and easier testing.
BManual resolution is faster but less secure.
CConstructor injection is required by PHP syntax.
DManual resolution disables middleware execution.
Step-by-Step Solution
Solution:

  1. Step 1: Understand benefits of constructor injection

    Constructor injection allows dependencies to be clearly declared and easily replaced for testing.

  2. Step 2: Compare with manual resolution

    Manual resolution couples code tightly and makes testing harder.

  3. Final Answer:

    Constructor injection promotes loose coupling and easier testing. -> Option A

  4. Quick Check:

    Constructor injection = Loose coupling + testability [OK]
Quick Trick: Constructor injection improves testability and decoupling [OK]
Common Mistakes:
  • Thinking constructor injection is PHP syntax requirement
  • Believing manual resolution is more secure
  • Assuming middleware is affected by injection style

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