How to pass functions to Templates using Go?
Jan 07, 2025 am 06:15 AMIn web development, it is common to need to use functions to transform the displayed data.
This transformation can be performed in the database or directly via JavaScript, depending on the context.
Examples of useful functions
- Currency Formatting
- Concatenate Strings
- String Formatting
- Domain-specific transformations
Steps to implement
- Define the Templates Engine
- Configure static files if necessary
- Create the desired functions
- Associate templates with created functions
- Invoke functions directly in templates
Advantages of the approach
- Performance improvement
- Use of the Go language to implement advanced logic directly in templates
- Reduced processing in the database
- Less dependence on JavaScript on the page, limiting it to specific functionalities
This approach is widely supported by the standard library and most popular frameworks.
In this example, we will use the Fiber framework.
Source code: https://github.com/ortizdavid/golang-pocs/tree/main/template-funcs
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