Laravel 5 Basic Tutorials | | 3. Controller: The dispatcher of the task

Laravel 5 Basic Tutorials | | 3. Controller: Task Dispatcher-table seriousness

Tutorials Directory

• 1. Installation and deployment-table seriousness
• 2. Routing: Link to Controller-table seriousness
• 3. Controller: Task Dispatcher-table seriousness

The controller is a small matchmaker.

Sometimes we find that it's not long before the logic is written directly into the route.

Route::get ('/', function () {    ...    ...    ... // （?' ')????})

What about this time?

Controller to!

It usually does the work:

Inform model: You prepare data for me.

Notice view: You prepare the template for me.

Returns the rendered template to the browser.

Completed.

For example, the hello part of our last lesson can be implemented using a controller.

Route::get (' Hello ', ' Hellocontroller@sayhello ');

All of a sudden, a lot of neat wood.
The first argument is still the address parameter, the second parameter is the string, the specified controller before the @, and the later part specifies the method used by the controller.

Create a Controller

Both Windows and UNIX can use the following command to create a controller:

cd my/laravel root directory php artisan make:controller hellocontroller

If you return a similar ... controller created successfully ... If the controller was created successfully, check/app/http/controllers you will find that this directory has a file hellocontroller.

You can, of course, create a controller manually, but in general you can use commands to fully satisfy your needs.

At this point the content of Hellocontroller is this:

... class Hellocontroller extends controller{public    function Index ()    {        }        ...}

All methods can be removed, these methods are created for us (but I never seem to artisan):

... class Hellocontroller extends controller{}

Create a method SayHello:

... class Hellocontroller extends controller{public    function SayHello ($name)    {        return ' Hello '. $name. '.';    }}

The routing rule at this point should be:

Route::get (' Hello/{name} ', ' Hellocontroller@sayhello ');

Address Bar Reference: localhost:8888/hello/liming

A classmate asked, if you want to make the name optional, that is, if you have a name to output "Hello + name.", but if you do not have a name, direct output "Hello there." Do you want to increase it?
This can be done in Laravel:

Route file Route::get (' Hello '/{name} ', ' Hellocontroller@sayhello ');//Controller: Public Function SayHello ($name =null) {    if (! $name)        return ' Hello there. ';    else        return ' Hello '. $name;} ...

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If you have questions, please comment below,/sprinkle flowers ~

Tutorials Directory

• 1. Installation and deployment-table seriousness
• 2. Routing: Link to Controller-table seriousness
• 3. Controller: Task Dispatcher-table seriousness

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