我不知道如何将flask中的数据从js附加到python,而不使用python路由中的全局列表,这将导致所有用户看到相同的api信息。
我的js静态文件中有一个ajax post请求,它允许用户选择一个项,在选择该项时,它将数据发送到python route,python route随后加载数据并将其附加到全局数组。然后在路由中,我将json列表返回给api。我正试图找到另一种方法来实现这一点,因为首先从我对全局变量的理解来看,使用这个方法是非常糟糕的,因为所有用户都可以看到全局api信息。
// On load cart
window.onload = function wowzers(){
var array = [];
var sum = 0;
// Get Data
var xhr = new XMLHttpRequest();
xhr.open('GET', 'pricing/orders/' + username +'/api', true);
xhr.onload = function(){
var data = JSON.parse(this.response);
if(xhr.status >= 200 && xhr.status < 400){
for(x in data){
for(key in data[x]){
array.push(Number(data[x][key]));
sum+=Number(data[x][key]);
subtotal.innerHTML = sum;
row = cart.insertRow(-1);
// Delete Data
row.addEventListener('click', function deleterow(){
index = this.rowIndex;
$.post('pricing/orders/delete', {
delete_item: index
});
cart.deleteRow(index);
subtotal.innerHTML = sum-Number(cart.rows[index].cells[1].innerHTML);
});
cell1 = row.insertCell(0);
cell2 = row.insertCell(1);
cell3 = row.insertCell(2);
cell1.innerHTML = key;
cell2. innerHTML = data[x][key];
cell3. innerHTML = "<button class='btn btn-danger'>Delete</button>"
}
}
console.log(sum);
}else{
console.log(error)
}
}
xhr.send()
}
//Dynamic Cart
for(x = 0; x < tablerows; x++){
table.rows[x].addEventListener('click', addCartItem);
}
function addCartItem(ev){
var array = [];
var sum = 0;
index = this.rowIndex;
equipmentCell = table.rows[index].cells[0];
priceCell = table.rows[index].cells[1];
equipmentName = equipmentCell.innerHTML;
equipmentPrice = priceCell.innerHTML;
// Post Data
$.post('/pricing/orders/' + username + '/api', {
javascript_data: JSON.stringify({[equipmentName]:equipmentPrice})
});
cartrow = cart.insertRow(-1);
// Delete Data
cartrow.addEventListener('click', function deleterow(){
index = this.rowIndex;
subtotal.innerHTML = sum-Number(cart.rows[index].cells[1].innerHTML);
$.post('pricing/orders/delete', {
delete_item: index
});
cart.deleteRow(index);
});
cell1 = cartrow.insertCell(0);
cell2 = cartrow.insertCell(1);
cell3 = cartrow.insertCell(2);
cell1.innerHTML= equipmentName;
cell2.innerHTML = equipmentPrice;
cell3.innerHTML = "<button class='btn btn-danger'>Delete</button>";
// Open Api information
var xhr = new XMLHttpRequest();
xhr.open('GET', 'pricing/orders/' + username +'/api', true);
xhr.onload = function(){
var data = JSON.parse(this.response);
if(xhr.status >= 200 && xhr.status < 400){
for(x in data){
for(y in data[x]){
array.push(Number(data[x][y]));
sum+=Number(data[x][y]);
subtotal.innerHTML = sum;
}
}
}else{
console.log(error);
}
}
xhr.send();
}
路由逻辑
# ---------------------------------- USER CART API -----------------------------
@app.route('/pricing/orders/<user_name>/api', methods=['POST', 'GET'])
@login_required
def api(user_name):
user_name = current_user.username
if request.method == 'POST':
cart.append(json.loads(request.form["javascript_data"]))
return jsonify(cart)
# ---------------------------- DELETE ITEM IN CART ROUTE ----------------------------------
@app.route('/pricing/orders/delete', methods=['POST', 'GET'])
@login_required
def delete_item():
if request.method == 'POST':
print(cart[json.loads(request.form["delete_item"])])
cart.pop(json.loads(request.form["delete_item"]))
print(cart)
return jsonify({"whoa": "there"})
# ----------------------------- DISPLAY CART BADGE LENGTH---------------------------------
@app.context_processor
def inject_badge_length():
badge_length = len(cart)
return {'BADGE_LENGTH' : badge_length}
我希望我可以将数据发布到python路由,然后在没有全局列表的情况下将特定数据附加到api,这样所有用户只能查看自己的数据。我是restful api领域的初学者,只需要指出正确的方向。