How to call other function from the same controller in Laravel application? - php

Question

I'm very new to Laravel and I was given a Laravel project, where I need to add some new features. The person, who has previously worked on that project hadn't left even a single comment in the code and now I must make my own scenarios about the features.
I have a controller, defined with some functions (dashboard, show_project, save_project etc.) and in one of my function, I need to use the result of calling other function.
In the concrete example, the call is made from "http://127.0.0.1:8000/username/project_slug" - there is a button "Save" and post function, called on onClick event. The function, whose output I need is normally called on "http://127.0.0.1:8000/username/project_slug/svg", which returns a view.
For better understanding, there's an example of the flow:
The user wants to save his/her project (an UML diagram) but in order to have a thumbnail, a function which generates a view (SVG format) will be called and the idea is, to take the HTML content of the page, which is on "http://127.0.0.1:8000/username/project_slug/svg" and to pass it to another API in order an image to be generated.
So far, I tried with cURL, file_get_contents, file_get_html, render methods but when I return the output, the server just keeps waiting and shows no error messages.
//The both functions are in ProjectController.php
/**
* A function, for saving the json file, where the whole of the diagram
* components are described. From the frontend we receive the project_id and
* the project_data(the json content).
*/
public function save_project(Request $request) {
$input = $request->only(['project_id', 'project_data']);
/*
Here we need to call the other function, to render the HTML content
and to pass it to the other API. Then we save the result with the
other information.
*/
/*
What I've tried?
$new_link = 'http://' . $_SERVER['HTTP_HOST'] . "/$username"
."/$project_slug" . "/svg";
$contents = file_get_contents($new_link);
return $contents;
*/
//In the same way with cURL.
$project = Project::where('user_id',session('userid'))
->where('id',$input['project_id'])->first();
$project->project_data = json_encode($input['project_data']);
if($project->save()) {
return ["status"=>"saved"];
}
else {
return ["status"=>"error"];
}
}
/**
* A function, which takes the the Json content (project_data) from the
* database and passes it to the view, where the Json is transformed in HTML
* tags.
*/
public function generate_svg(Request $request,$username,$project_slug) {
if(session('username')!=$username) {
return redirect("/");
}
$userid = session('userid');
$project = Project::where([
'user_id' => $userid,
'slug' => $project_slug,
])->first();
if(!is_null($project)) {
return view('svg',compact('project'));
}
}
I've read about some possible ways, including Guzzle request but maybe I haven't understood correctly the idea:
If I need to make a Guzzle request from my controller to the other function inside my controller, do I need an API configuration?
What I mean? Example:
Before saving the project, the user is on this URL address "http://127.0.0.1:8000/hristo/16test". Inside the controller, I have in session variables the token, the username(hristo) and i can get the project_name(16test) from the URL but after passing this URL to the generate_svg function, there is no indication of error or success.
So I'm missing some kind of token information?

Answer 1

If you just need the response of the other function you can just use
$response = $this->generate_svg($request, $username, $project_slug);
If you'll need to use this function from a different controller you can use this
app('App\Http\Controllers\UsernameController')->generate_svg($request, $username, $project_slug);