时间戳

首页 > 解决方案 > 如何解决角度条件下的逻辑错误

angular - 如何解决角度条件下的逻辑错误

问题描述

我有一个非常简单的逻辑，我已经写了条件，我发现逻辑非常好，但它总是给出错误的结果。我有三个字段立即限制，持有限制和 LDC。所以条件是当立即限制和保持一个限制是数值时，它们的总和应该小于 LDC，并且每个限制的单个值也应该小于 LDC。（当限制值不是数字时，它们返回负数。）

这是我的代码：

immediateLimitError: boolean = false;
hold1LimitError: boolean = false;
ldcLimitError: boolean = false;
sumOflimitVal: any;
changedLdc!: any;
changedImmediateLimit!: any;
changedHold1Limit!: any;

private instantiateValidation(row: any) {
        this.newHoldSchedule = this.formBuilder.group({
            immediatereleaseForm: [(row.hold1ReleaseAmt != null ? row.hold1ReleaseAmt : ' '), Validators.required],
            ldcForm: [(row.ldcAmt != null ? row.ldcAmt : ' ')],
            holdOneLimitForm: [(row.hold2ReleaseAmt != null ? row.hold2ReleaseAmt : ' '), Validators.required]
        });
        this.changedImmediateLimit = row.hold1ReleaseAmt;
        this.changedHold1Limit = row.hold2ReleaseAmt;
        this.changedLdc = row.ldcAmt;

        this.newHoldSchedule.get('immediatereleaseForm')!.valueChanges.subscribe(val => {
            this.changedImmediateLimit = val;
            if(this.changedHold1Limit >= 0 || val >= 0 ){
                if((val + this.changedHold1Limit) > this.changedLdc || 
                    val > this.changedLdc || 
                    this.changedHold1Limit > this.changedLdc){
                        this.immediateLimitError = true;
                }
                else{
                    this.immediateLimitError = false;

                }
            }
          });
          this.newHoldSchedule.get('holdOneLimitForm')!.valueChanges.subscribe(val => {
              this.changedHold1Limit = val;
              if(this.changedImmediateLimit >= 0 || val >= 0 ){
                if((val + this.changedImmediateLimit) > this.changedLdc || 
                    val > this.changedLdc || 
                    this.changedImmediateLimit > this.changedLdc){
                    this.hold1LimitError = true;
                }
                else{
                    this.hold1LimitError = false;
                }
              }
            });
            this.newHoldSchedule.get('ldcForm')!.valueChanges.subscribe(val => {
                this.changedLdc = val;
              if(this.changedImmediateLimit >= 0 || this.changedHold1Limit >= 0 ){
                if(val < (this.changedImmediateLimit + this.changedHold1Limit) || 
                    this.changedHold1Limit > val || 
                    this.changedImmediateLimit > val){
                    this.ldcLimitError = true;
                }
                else{
                    this.ldcLimitError = false;
                }
              }
            });

}

if(this.immediateLimitError || this.hold1LimitError || this.ldcLimitError){
                    this.displayError('The sum of Immediate Release limit and Hold 1 Limit exceeds LDC');
                    event.preventDefault();
                }

此代码适用于某些值，而某些值会给出错误的结果。我尝试调试和更改条件，但它无法按照我希望的方式工作。任何帮助，将不胜感激。谢谢

标签： angulartypescriptif-statement

解决方案

似乎所有的值都是异步分配的，但又是分开的。因此，在检查条件之前无法确保其他值已正确更新。

相反，您可以使用 RxJScombineLatest函数来组合 observables 和startWithoperator 以提供种子值。

尝试以下

private instantiateValidation(row: any) {
  this.newHoldSchedule = this.formBuilder.group({
    immediatereleaseForm: [(row.hold1ReleaseAmt != null ? row.hold1ReleaseAmt : ' '), Validators.required],
    ldcForm: [(row.ldcAmt != null ? row.ldcAmt : ' ')],
    holdOneLimitForm: [(row.hold2ReleaseAmt != null ? row.hold2ReleaseAmt : ' '), Validators.required]
  });

  combineLatest(
    this.newHoldSchedule.get('immediatereleaseForm')!.valueChanges.pipe(startWith(row.hold1ReleaseAmt)),
    this.newHoldSchedule.get('holdOneLimitForm')!.valueChanges.pipe(startWith(row.hold2ReleaseAmt)),
    this.newHoldSchedule.get('ldcForm')!.valueChanges.pipe(startWith(row.ldcAmt))
  ).subscribe(
    ([changedImmediateLimit, changedHold1Limit, changedLdc]) => {
      if (
        (typeof changedImmediateLimit === "number" && typeof changedHold1Limit === "number") &&
        ((changedImmediateLimit + changedHold1Limit) < changedLdc) && 
        (changedImmediateLimit < changedLdc && changedHold1Limit < changedLdc)
      ) {
        // condition passed
      } else {
        // condition failed
        this.displayError('The sum of Immediate Release limit and Hold 1 Limit exceeds LDC');
        event.preventDefault();
      }
    }
  );
}

条件是根据您的问题编写的。你可以调整它。根据您的要求。

推荐阅读