Template literals function for use with callbacks

README.md

@@ -250,6 +250,14 @@ sql.connect(config, err => {
 
         console.dir(result)
     })
+
+    // Using template literal
+
+    const request = new sql.Request()
+    request.query(request.template`select * from mytable where id = ${value}`, (err, result) => {
+        // ... error checks
+        console.dir(result)
+    })
 })
 
 sql.on('error', err => {

lib/base/request.js

@@ -40,6 +40,18 @@ class Request extends EventEmitter {
     this.parameters = {}
   }
 
+  /**
+   * Generate sql string and set imput parameters from tagged template string.
+   *
+   * @param {Template literal} template
+   * @return {String}
+   */
+  template () {
+    const values = Array.prototype.slice.call(arguments)
+    const strings = values.shift()
+    return this._template(strings, values)
+  }
+
   /**
    * Fetch request from tagged template string.
    *

test/common/unit.js

@@ -273,4 +273,11 @@ describe('Unit', () => {
       command: 'select * from myTable where id in (@param1_0, @param1_1, @param1_2)'
     })
   })
+
+  it('tagged template literal request', () => {
+    const req = new sql.Request()
+    const sqlstr = req.template`select * from myTable where id = ${123}`
+    assert.strictEqual(sqlstr, 'select * from myTable where id = @param1')
+    assert.strictEqual(req.parameters.param1.value, 123)
+  })
 })