處理有條件的角落承諾

Question

如果狀態爲「準備就緒」，我想進行一些API調用，然後一次解決後我想執行一些語句。

如果狀態不是ready我不想進行API調用，但仍會執行語句。

我已經完成它是這樣的：

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; 

我知道我在這裏做一些不好的編碼實踐。

我根本不需要$q.all。

但我無法弄清楚如何處理這種情況 - 因爲最後兩行會被處決

For ready batches within then only after that promise resolves, but for other batches there is no promise. So they can get executed quickly.

我怎樣纔能有效地寫出來，這樣既情況的處理方式？

Answer 1

這應該工作，線路執行，無論我建議嘗試.finally塊。您可以檢查作業狀態，然後調用作業詳細信息功能。

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; 
}