


Retrieving Struct Field of Map Element in HTML/Template's Go Package
Situation:
You have a struct and a map using the struct as a value. You desire to access the struct's fields within an HTML page rendered using the html/template package.
Solution:
To enable access to the struct's fields within the template, they must be exported. Exporting a field entails beginning its name with an uppercase letter.
Detailed Explanation:
<code class="go">type Task struct { cmd string args []string Desc string // Exported field }</code>
Notice the uppercase 'D' in Desc.
Similarly, update the map and template references:
<code class="go">var taskMap = map[string]Task{ "find": Task{ cmd: "find", args: []string{"/tmp/"}, Desc: "find files in /tmp dir", }, "grep": Task{ cmd: "grep", args:[]string{"foo","/tmp/*", "-R"}, Desc: "grep files match having foo", }, }</code>
<code class="html">{{range $key, $value := .}} <li>Task Name: {{$key}}</li> <li>Task Value: {{$value}}</li> <li>Task description: {{$value.Desc}}</li> {{end}}</code>
Results:
The output will contain the Desc field for each task:
<code class="html"> <li>Task Name: find</li> <li>Task Value: {find [/tmp/] find files in /tmp dir}</li> <li>Task description: find files in /tmp dir</li> <li>Task Name: grep</li> <li>Task Value: {grep [foo /tmp/* -R] grep files match having foo}</li> <li>Task description: grep files match having foo</li> </code>
Note: This solution exports the entire struct, so consider using a defined template function if you only need specific fields.
The above is the detailed content of How to Access Struct Fields of Map Elements in HTML Templates Using Go\'s html/template Package?. For more information, please follow other related articles on the PHP Chinese website!

The article explains how to use the pprof tool for analyzing Go performance, including enabling profiling, collecting data, and identifying common bottlenecks like CPU and memory issues.Character count: 159

The article discusses writing unit tests in Go, covering best practices, mocking techniques, and tools for efficient test management.

This article demonstrates creating mocks and stubs in Go for unit testing. It emphasizes using interfaces, provides examples of mock implementations, and discusses best practices like keeping mocks focused and using assertion libraries. The articl

This article explores Go's custom type constraints for generics. It details how interfaces define minimum type requirements for generic functions, improving type safety and code reusability. The article also discusses limitations and best practices

The article discusses Go's reflect package, used for runtime manipulation of code, beneficial for serialization, generic programming, and more. It warns of performance costs like slower execution and higher memory use, advising judicious use and best

This article explores using tracing tools to analyze Go application execution flow. It discusses manual and automatic instrumentation techniques, comparing tools like Jaeger, Zipkin, and OpenTelemetry, and highlighting effective data visualization

The article discusses using table-driven tests in Go, a method that uses a table of test cases to test functions with multiple inputs and outcomes. It highlights benefits like improved readability, reduced duplication, scalability, consistency, and a

The article discusses managing Go module dependencies via go.mod, covering specification, updates, and conflict resolution. It emphasizes best practices like semantic versioning and regular updates.


Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

Safe Exam Browser
Safe Exam Browser is a secure browser environment for taking online exams securely. This software turns any computer into a secure workstation. It controls access to any utility and prevents students from using unauthorized resources.

SecLists
SecLists is the ultimate security tester's companion. It is a collection of various types of lists that are frequently used during security assessments, all in one place. SecLists helps make security testing more efficient and productive by conveniently providing all the lists a security tester might need. List types include usernames, passwords, URLs, fuzzing payloads, sensitive data patterns, web shells, and more. The tester can simply pull this repository onto a new test machine and he will have access to every type of list he needs.

SublimeText3 Mac version
God-level code editing software (SublimeText3)

ZendStudio 13.5.1 Mac
Powerful PHP integrated development environment

SublimeText3 English version
Recommended: Win version, supports code prompts!
