Guidelines for using the input method in Laravel

In Laravel, we often need to obtain user-entered data from requests. At this time, you can use the input method to easily obtain the request parameters. This article will introduce the usage of the input method in detail and provide some specific code examples.

1. Basic usage of input method

input method is used to obtain user-entered data from the request. It accepts one parameter, which is the key name of the input field to be obtained. The following is a basic usage example of the input method:

$name = $request->input('name');

In the above example, we obtain the user-input name name# through the input method. ## field value and assign it to the variable $name. Next we will introduce some advanced usage of the input method.

null value, we can inputThe second parameter is passed as the default value in the method. An example is as follows:

$name = $request->input('name', '未知');

name, the $name variable will be assigned the default value Unknown .

input method can also get the value of multiple fields. We can pass an array containing multiple field names as parameter. The sample code is as follows:

$data = $request->input(['name', 'age', 'gender']);

$data array.

all method to obtain all input data. An example is as follows:

$inputData = $request->all();

all method, we can get all user-entered data and store it in the $inputData array.

input method to obtain user input data, we can also use the verification function provided by Laravel to verify whether the user input meets the requirements. Here is a simple example:

$validatedData = $request->validate([
    'name' => 'required|string',
    'email' => 'required|email',
]);

validate method to validate the name and email entered by the user Whether the field is required and meets the string and email format requirements.

input method in Laravel to obtain user input data, and learned some advanced usage, such as getting the default values, get multiple fields, get all inputs, and validate inputs. Hopefully these examples will help you make better use of input methods to process user-entered data.

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