在Node.js中使用猫鼬风格的模式
本文关键字:风格 模式 Node js | 更新日期: 2023-09-27 18:03:42
我目前正在用Express.js编写API,并且已经看到了许多关于如何为mongodb创建模式/模型的示例,但想知道是否有任何类似的MSSQL解决方案。例如,我在c#控制器中有以下方法:
public void SubmitExpenses(List<Expense> expenses)
{
using (cnxn)
{
cnxn.Open();
for (int i = 0; i < expenses.Count; i++)
{
int employeeId = expenses.ElementAt(i).employeeId;
string expenseDate = expenses.ElementAt(i).expenseDate;
int taskId = expenses.ElementAt(i).taskId;
int expenseTypeId = expenses.ElementAt(i).expenseTypeId;
int billingCategory = expenses.ElementAt(i).billingCategory;
string notes = expenses.ElementAt(i).notes;
float amount = expenses.ElementAt(i).amount;
string lastUpdatedDate = expenses.ElementAt(i).LastUpdatedDate;
int lastUpdatedBy = expenses.ElementAt(i).LastUpdatedBy;
string dateSubmitted = expenses.ElementAt(i).dateSubmitted;
//public void SubmitExpenses(int employeeId, string expenseDate, int taskId, int expenseTypeId, int billingCategory,
// string notes, float amount, string lastUpdatedDate, int lastUpdatedBy, string dateSubmitted)
//{
using (SqlCommand sqlQuery = new SqlCommand("INSERT INTO Expenses " +
"(Employee_ID, Task_ID, Expense_Date, Expense_Type_ID, Billing_Category_ID, " +
"Amount, Notes, Last_Updated_By, Last_Update_Datetime, Date_Submitted, Location) " +
"Values (@employeeId, @taskId, @expenseDate, @expenseTypeId, @billingCategory, @amount, @notes, " +
"@lastUpdatedBy, @lastUpdatedDate, @dateSubmitted, @locationId)", cnxn))
{
sqlQuery.Parameters.Add(new SqlParameter("@employeeId", SqlDbType.Int) { Value = employeeId });
sqlQuery.Parameters.Add(new SqlParameter("@expenseDate", SqlDbType.DateTime) { Value = expenseDate });
sqlQuery.Parameters.Add(new SqlParameter("@taskId", SqlDbType.Int) { Value = taskId });
sqlQuery.Parameters.Add(new SqlParameter("@expenseTypeId", SqlDbType.Int) { Value = expenseTypeId });
sqlQuery.Parameters.Add(new SqlParameter("@billingCategory", SqlDbType.Int) { Value = billingCategory });
sqlQuery.Parameters.Add(new SqlParameter("@notes", SqlDbType.Text) { Value = notes });
sqlQuery.Parameters.Add(new SqlParameter("@amount", SqlDbType.Money) { Value = amount });
sqlQuery.Parameters.Add(new SqlParameter("@lastUpdatedDate", SqlDbType.DateTime) { Value = lastUpdatedDate });
sqlQuery.Parameters.Add(new SqlParameter("@lastUpdatedBy", SqlDbType.Int) { Value = lastUpdatedBy });
sqlQuery.Parameters.Add(new SqlParameter("@dateSubmitted", SqlDbType.DateTime) { Value = dateSubmitted });
sqlQuery.Parameters.Add(new SqlParameter("@locationId", SqlDbType.VarChar) { Value = "" });
sqlQuery.ExecuteNonQuery();
}
}
}
}
和Expense.cs
模型:
public class Expense
{
public int employeeId { get; set; }
public string expenseDate { get; set; }
public int taskId { get; set; }
public int expenseTypeId { get; set; }
public int billingCategory { get; set; }
public string notes { get; set; }
public float amount { get; set; }
public string LastUpdatedDate { get; set; }
public int LastUpdatedBy { get; set; }
public string dateSubmitted { get; set; }
public string location { get; set; }
}
如何在Express.js中使用类似的方式,以便我可以将JavaScript对象列表,将它们分解为可以参数化和提交的元素?
会不会是…
app.post('/route/to/api', function (req, res) {
var sql = require('mssql');
sql.connect("mssql://user:password@localhost/Northwind").then(function () {
console.log('connected');
for (var i = 0; i < req.length; i++) {
new sql.Request()
.input('input_param', sql.VARCHAR, req[i]['PropertyName'])
.query('INSERT INTO Table VALUES (@input_param)')
.then(function (recordset) {
console.log(recordset);
})
.catch(function (err) {
console.log(err);
});
}
}).catch(function (err) {
console.log(err);
});
});
任何建议将不胜感激!
看一下sequelize。它应该能提供你需要的功能。