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Adobe AD0-E716 Exam - Topic 12 Question 49 Discussion

Posted by Malcom on Jul 31, 2025 at 01:46 PM

An Adobe Commerce Developer wishes to add an action to a pre-existing route, but does not wish to interfere with the functionality of the actions from the original route.

What must the developer do to ensure that their action works without any side effects in the original module?

Suggested Answer: A

To add an action to a pre-existing route without interfering with the functionality of the original route, the developer must use the before or after parameters in the route declaration. This will load the developer's module in before or after the original module, respectively.

For example, the following code would add an action to the my_module/index route before the action from the original module:

<route id='my_module/index'>

<before>my_module_before</before>

</route>

The my_module_before action would be executed before the MyModuleControllerIndex action, which would allow the developer to perform any necessary setup before the original action is executed.


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30 comments · newest first
CH
Charlene 10 months ago
Wait, can Magento really auto-detect actions like that?
DE
Delmy 10 months ago
C is definitely not how it works, that's misleading.
DA
Daniel 10 months ago
Option A is the way to go!
LA
Lauran 10 months ago
I disagree, B seems more straightforward.
CA
Cassandra 10 months ago
I've always used A for this kind of thing, works like a charm!
GA
Gail 11 months ago
I practiced a similar question where we had to extend routes without breaking existing functionality, and I feel like the before/after parameters were key there.
GR
Grover 11 months ago
Adding the action to the controllers/front_name/ sounds familiar, but I’m not confident if Magento really auto-detects it like that.
JU
Julian 11 months ago
I think injecting the action into the router's $actionList might be the right approach, but I can't recall the exact syntax.
LI
Lina 11 months ago
I remember something about using before or after parameters in route declarations, but I'm not entirely sure how that works in this context.
ON
Ona 12 months ago
I've dealt with similar issues before. I think Option A is the way to go - it allows you to load your module in a specific order without affecting the original functionality.
NI
Nicolette 12 months ago
Option C seems like the easiest solution, but I'm not sure if that's the best practice. I'll need to research the recommended way to add a new action without disrupting the original module.
KA
Kanisha 12 months ago
I'm a bit confused on the difference between the before and after parameters in the route declaration. I'll need to double-check the documentation on that.
EM
Emilio 1 year ago
I think the key here is to avoid interfering with the original module's functionality. Option A sounds like the safest approach to me.
JI
Jina 1 year ago
Hmm, this seems like a tricky one. I'll need to carefully review the module structure and routing configuration to make sure I don't break anything.
RE
Remedios 1 year ago
I'm not sure, but injecting the new action into the standard router constructor sounds like a good idea too.
MA
Marci 1 year ago
I think I'll go with A) on this one. Keeping your module separate and loading it in the right order seems like the safest way to avoid any unexpected issues.
EL
Elizabeth 1 year ago
Ha! Imagine if the developer just started randomly adding actions to the controllers folder. That would be a surefire way to cause some serious side effects!
JU
Jutta 1 year ago
↳ replying to Elizabeth
Absolutely! That would be chaos.
RI
Richelle 1 year ago
↳ replying to Elizabeth
Sticking to the right methods saves a lot of trouble.
KI
Kimberely 1 year ago
↳ replying to Elizabeth
Right? It could break everything!
JU
Junita 1 year ago
↳ replying to Elizabeth
Definitely a risky move. Best to be cautious.
MA
Marg 1 year ago
Hmm, I'm not so sure about C). Adding the action to the controllers/front_name/ directory seems a bit too simple, I'm not convinced Magento would automatically detect and use it.
DA
Daisy 1 year ago
↳ replying to Marg
A) In the route declaration, use the before or after parameters to load their module in before or after the original module.
BO
Bobbye 1 year ago
I agree with Barabara, that way the new action won't interfere with the original module.
BA
Barabara 1 year ago
I think the developer should use the before or after parameters in the route declaration.
WI
William 1 year ago
I disagree, I think A) is the better option. By using the before or after parameters, you can ensure your module is loaded in the right order without interfering with the original functionality.
HI
Hildred 1 year ago
I think B) sounds like the way to go. Injecting the new action into the standard router constructor's $actionlist parameter seems like the most straightforward approach.
AM
Amos 1 year ago
↳ replying to Hildred
That makes sense. Injecting the new action directly into the router constructor seems like the best way to avoid any conflicts.
TO
Tonette 1 year ago
↳ replying to Hildred
B) Inject the new action into the standard router constructor's $actionlist parameter.
AF
Afton 1 year ago
↳ replying to Hildred
A) In the route declaration, use the before or after parameters to load their module in before or after the original module.
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