How to implement the approval process using Golang

With the continuous development and progress of society, many companies need to establish an approval process to standardize their operating procedures, improve their operational efficiency and effectiveness, and at the same time avoid human errors and reduce corporate risks. In this process, technical support is essential. This article will introduce how to use Golang to implement a simple approval process.

Golang is an open source high-performance programming language. It is characterized by simple syntax, high development efficiency, and powerful performance. The advantage of using Golang to develop enterprise applications is that they can be deployed quickly and run efficiently, while also saving development costs for enterprises. When building the approval process, Golang can help us implement the workflow efficiently and improve the work efficiency of the enterprise.

First, we need to define a flow chart of the approval process, including each node and execution process in the approval process. For example, we can define a simple flow chart containing three nodes: application, approval, and execution. When an application is submitted, it is sent to an approver. If approved, the application will be sent to the executive for execution, otherwise the application will be rejected.

Next, we need to consider how to use Golang to implement this approval process. First, we need to define a structure to save the application information, for example:

type Application struct {
  Applicant string        // 申请人姓名
  Description string     // 申请描述
  Status string                // 状态：待处理、审批中、已完成、已拒绝等
  ApprovalList []string   // 审批列表，保存每一位审批人员的ID
  CurrentApprover int     // 当前审批人员在审批列表中的位置
  Executor string         // 执行人员姓名
}

The status of the application includes pending, under approval, completed, and rejected. The Pending status indicates that the application has not yet been sent to the first approver; the Approval status indicates that the application is in the process of approval; the Completed status indicates that the application has completed the approval process and been executed; the Rejected status indicates that the application has been rejected.

We also need to define a structure to save the information of each approver, for example:

type Approver struct {
  ID string
  Name string
  Role string  // 角色：经理、主管、总监等
}

In the approval process, we need to provide a structure that can send the application to the next approver. Personnel function, for example:

func (app *Application) sendToNextApprover() bool {
  if app.CurrentApprover == len(app.ApprovalList) - 1 { // 最后一位审批人员
    app.Status = "已完成"
    return true
  } else {
    app.Status = "审批中"
    app.CurrentApprover += 1
    return false
  }
}

If the current approver is the last approver, set the status to "Completed"; otherwise, set the status to "Approving" and send the application to the next Approval personnel.

Next, we need to write a function to handle the operation of submitting an application, for example:

func submitApplication(app *Application, approver *Approver) bool {
  if app.Status == "待处理" {
    app.ApprovalList = append(app.ApprovalList, approver.ID)
    app.sendToNextApprover()
    return true
  } else {
    return false
  }
}

This function will determine whether the status of the application is "pending". If so, add an approver to the request and send the request to the first approver. If not, the function will return "false", indicating that the request has been processed.

When the approving officer receives the application, he needs to approve the application. We can write a function to handle the approval operation, for example:

func approveApplication(app *Application, approver *Approver, isApproved bool) bool {
  if app.Status == "审批中" && app.ApprovalList[app.CurrentApprover] == approver.ID {
    if isApproved { // 如果审批通过
      if app.sendToNextApprover() {
        assignTask(app)
      }
    } else {        // 如果审批未通过
      app.Status = "已拒绝"
    }
    return true
  } else {
    return false
  }
}

This function will determine whether the status of the application is "Under Approval" and whether the current approver is the same as the incoming approver. If yes, determine whether the approval is passed. If the approval is passed, perform the following operations:

1. If the current approver is the last approver, assign the task to the executive;
2. If the current approver is not the last approver number of approvers, the task will be sent to the next approver.

If the approval is not passed, the status of the application is set to "Rejected".

Finally, we need to write a function to handle the task assignment operation, for example:

func assignTask(app *Application) {
  app.Status = "待执行"
  app.Executor = "李四"
}

This function will set the task status to "pending execution" and assign the task to an execution personnel.

This article introduces how to use Golang to implement a simple approval process. In practical applications, we need to have an in-depth understanding of each aspect of the approval process and make corresponding adjustments and modifications based on actual needs. Through continuous optimization and improvement, we can create an efficient, stable and reliable enterprise application.

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