Question

如果状态为“准备就绪”，我想进行一些API调用。然后只有在解决之后我才想执行一些陈述。

如果状态不是private void InletPercentage_TextBox_TextChanged(object sender, EventArgs e) { HandleTextBox(InletPercentage_TextBox, OutletPercentage_TextBox); } private void OutletPercentage_TextBox_TextChanged(object sender, EventArgs e) { HandleTextBox(OutletPercentage_TextBox, InletPercentage_TextBox); } private void HandleTextBox(TextBox me, TextBox other) { // if not enabled then it is not user input and just leave if (!me.Enabled) return; // if the user has cleared the input, reset other to accept input on both again if (string.IsNullOrEmpty(me.Text)) { other.Text = string.Empty; other.Enabled = true; return; } // handle user input other.Enabled = false; int value; if (int.TryParse(me.Text, out value) && value >= 0 && value <= 100) { other.Text = (100 - value).ToString(); } else { other.Text = string.Empty; MessageBox.Show("Invalid input"); } }，我不想进行API调用，但仍会执行语句。

我这样做了：

ready

我知道我在这里做了一些不好的编码实践。

我可能根本不需要if(job.status === 'ready') //Makes a promise to fetch the progress API details for ready batches only var promise = HttpWrapper.send('/api/jobs/'+job.job_id+'/getDetails', { "operation": 'GET' }); //Once the promise is resolved, proceed with rest of the items $q.all([promise]) .then(function(result) { //Because for not ready batches promise object and it's response wuld be undefined if(result[0] !== undefined){ //Create a property that would hold the progress detail for ready batches job.pct = result[0].pct; } //Want to execute these lines no matter what vm.job = job; vm.loading = false;。

但我无法弄清楚如何处理这种情况 - 因为最后两行会被执行

$q.all

如何有效地编写它们以便处理这两种情况？

Answer 1

这应该有效，无论我建议尝试.finally块，都要执行。您可以检查作业状态，然后调用作业详细信息功能。

if (job.status === 'ready') {
  getJobDetails(job);
} else {
  defaults(job);
}

function getJobDetails(job) {
  return $http.get('/api/jobs/' + job.job_id + '/getDetails')
    .then(function(resp) {
      if (resp) {
        job.pct = result[0].pct;
      }
    })
    .catch(funcition(error) {
      console.log(error);
    })
    .finally(function() {
      vm.job = job;
      vm.loading = false;
    });
}

function defaults(job) {
  vm.job = job;
  vm.loading = false;
}

处理条件角度承诺

1 个答案: