How to perform website form validation and data processing through Webman

How to perform form validation and data processing on the website through Webman

Webman is a powerful web development framework that provides a wealth of functions and tools that can help Developers build high-quality web applications quickly. In the actual web development process, form validation and data processing are very important parts. This article will introduce how to use Webman for form validation and data processing on the website, and provide corresponding code examples.

1. Form Validation

Form validation is a key step to ensure that the data entered by the user meets the expected requirements. In Webman, we can use the form validator (FormValidator) to achieve this function. The following is a simple form validation example:

from webman import Form, StringField, IntegerField, SubmitButton, FormValidator

class MyForm(Form):
    name = StringField("名字")
    age = IntegerField("年龄")
    submit = SubmitButton("提交")

    def validate_age(self, field):
        if field.data < 18:
            raise ValueError("年龄必须大于等于18岁!")

form = MyForm()

@form.submit_handler
def handle_submit(form):
    if form.validate():
        # 验证通过，进行相应的处理逻辑
        pass

form.render()

In the above code, we define a MyForm class, which inherits from the Form class. Then use StringField and IntegerField to define the fields that need to be verified, and a SubmitButton to define the submit button. In the validate_age method, we have customized validation logic for the age field. By calling the form.validate() method, you can trigger the validation operation of the form.

2. Data processing

Once the form verification is passed, we need to process the data entered by the user accordingly. Webman provides a wealth of tools to simplify this process. The following is an example of data processing:

from webman import Request, JsonResponse

@Request.handler("/process", methods=["POST"])
def handle_process(request):
    name = request.form.get("name")
    age = int(request.form.get("age"))

    # 进行数据处理逻辑
    # ...

    return JsonResponse({"message": "数据处理成功"})

In the above code, we use the Request.handler decorator to define a request processing function. This function uses "/process" as the route and only accepts POST requests. The data submitted by the form can be obtained through the request.form.get() method and the corresponding type conversion can be performed. After the processing is completed, we can return a JSON format response data through JsonResponse.

Summary

Through the above code examples, we can see that Webman provides simple and powerful tools for website form validation and data processing. These tools can help developers improve development efficiency and reduce the possibility of errors. Of course, this is just a brief introduction to some basic usage. Webman also provides more rich functions and options, which can be adapted and expanded according to specific needs. I hope this article can be helpful to everyone when using Webman for website development.

The above is the detailed content of How to perform website form validation and data processing through Webman. For more information, please follow other related articles on the PHP Chinese website!