Getting Started with Flask: Static Resource Management and CDN Configuration
This article introduces static resource management and CDN configuration in Flask. Basics: Flask defaults to using the `static` folder as the static resource directory. In templates, `url_for('static', filename='path')` is used to dynamically generate resource URLs, avoiding hard-coded paths. Advanced: For complex projects, the `static_folder` parameter can customize the static directory, with the subdirectory reference method remaining unchanged. CDN Configuration: Replace local resources with CDN links (e.g., BootstrapCDN). Advantages include accelerated loading and reduced server pressure. Specify versions and retain local fallback plans. Best Practices: Dynamically generate URLs, customize directories for complex projects, use local resources in development and switch to CDN in production, prioritize CDN for important resources.
Read MoreLearn Flask Easily: Detailed Explanation of Request and Response Objects
In Flask, requests and responses are the core of web development. A request refers to data sent by a client (e.g., a browser), which can be accessed through the `request` object. Key properties include: `method` (HTTP method like GET/POST), `args` (URL parameters), `form` (form data), `cookies`, and `headers`. For example, GET requests retrieve parameters using `request.args`, while POST requests access form data via `request.form`. A response is the result returned by the application. Common methods to return responses include: returning a string, HTML (using `render_template`), JSON (using `jsonify`), redirection (using `redirect`), and custom status codes (e.g., 404). In a comprehensive example, form submissions (POST) use `request.form` to retrieve data. After validation, the application returns either a JSON or HTML response to achieve interaction. Key principles: GET is used to fetch data (parameters in the URL), while POST is for data submission (parameters in the request body). For responses, `jsonify` returns JSON, `render_template` returns HTML pages, `redirect` performs redirection, and `url_for` resolves route URLs.
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