Question about front and back end parameter passing in Drogon?

[ghost]

May I ask how to obtain the parameters of the front-end request in the controller? If it is a GET, it seems that it can be directly written in the path; But if it is a POST request with a large number of parameters, how should the controller obtain the parameters? Do I need to specialize the drogon namespace's fromRequest template??

[an-tao]

It depends on your preference, if there are many parameters to pass, the most common way is to post the data to the server in json format.

[ghost]

Thank you for your answer. But in fact, what I want to ask more is how the processing function in the controller receives parameters from the front-end post to the back-end. Besides the two parameters "const HttpRequestPtr &req, std:: function<void (const HttpResponsePtr &)> &&callback", do the controller's processing functions require any other parameters? Do I need to specialize the drogon namespace's fromRequest template??

[ghost]

Just gave it a try. For ordinary parameters, it seems that I can use req ->getParameters() to obtain the parameters. For Json form data, it seems that I can use req ->getJsonObject () to obtain parameters. May I ask if this is the right?

[an-tao]

Yes, you are right.

[ghost]

OK. Thank you!

[ghost]

Encountered the above warning during compilation and installation, does it affect subsequent use?

[ghost]

It seems that there are some deprecation contents in the current drogon version. Do I need to modify the source code and replace "CT_APPLICATION_X_JAVASCRIPT" with "CT_TEXT_JAVASCRIPT" before compiling and installing?

[ghost]

Or does this warning not affect subsequent use, just do not use "CT_APPLICATION_X_JAVASCRIPT" in the logic code I write myself in the future, can only use "CT_TEXT_JAVASCRIPT"?

[an-tao]

You don't need to do that, it has no side effects on your applications.

[ghost]

Thank you. I just looked at the source code of HttpUtils.cc and I understand