delete_node 기능 구현

app.py

@@ -29,5 +29,17 @@ def list_node():
     nodes = list(db.nodes.find({}, {'_id':False}))
     return jsonify({'result':'success', 'nodes':nodes})
 
+@app.route('/delete', methods=['POST'])
+def delete_node():
+    receive_from_input = request.form['give_from_input']
+    receive_to_input = request.form['give_to_input']
+    receive_edge_id = request.form['give_edge_id']
+    db.nodes.delete_one({
+        'from': receive_from_input,
+        'to': receive_to_input,
+        'edge': receive_edge_id
+    })
+    return jsonify({'result':'success'})
+
 if __name__ == '__main__':
     app.run('0.0.0.0', port=5000, debug=True)

templates/index.html

@@ -110,6 +110,35 @@
                 });
             };
         };
+
+        // node 지우는 함수
+        function delete_node() {
+            let from_input = $('#from').val();
+            let to_input = $('#to').val();
+            // input 빈칸 검출
+            if (from_input == '') {
+                alert('FROM 값을 입력해 주세요.');
+            }
+            else if (to_input == '') {
+                alert('TO 값을 입력해 주세요.');
+            }
+            else {
+                $.ajax({
+                    type: 'POST',
+                    url: '/delete',
+                    data: {
+                        'give_from_input': from_input,
+                        'give_to_input': to_input,
+                        'give_edge_id': from_input + to_input
+                    },
+                    success: function (response) {
+                        if (response['result'] == 'success') {
+                            window.location.reload();
+                        }
+                    }
+                });
+            };
+        };
 
     </script>
 </head>
@@ -118,6 +147,7 @@
     <input id="from" type="text" placeholder="FROM">
     <input id="to" type="text" placeholder="TO">
     <button onclick="save_node()" type="button">CREATE</button>
+    <button onclick="delete_node()" type="button">DELETE</button>
     <div id="cy"></div>
 </body>