问题
From the below data how to get the count of applicable impact, not applicable impact n FYI impact for assigned_to nested record instead of parent.
So, the expected results will be:
For 1st Record
Applicable:2 Not Applicable: 1
For 2nd Record
Applicable:1 Not Applicable: 1
db.json
[
{
"id": 1,
"first_name": "Male",
"last_name": "Record",
"email": "male.record@gmail.com",
"gender": "Male",
"dob": "01-01-1987",
"impact": "Not Applicable",
"score": "Updated",
"checked": false,
"assigned_to": [
{
"co_score": 54,
"dl": "CAT1",
"sub_impact": "Applicable",
"comments": "Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book."
},
{
"co_score": 20,
"dl": "CAT2",
"sub_impact": "Not Applicable",
"comments": "Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book."
},
{
"co_score": 99,
"dl": "CAT1",
"sub_impact": "Applicable",
"comments": "Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book."
}
]
},
{
"id": 2,
"first_name": "Female",
"last_name": "Record",
"email": "female.record@gmail.com",
"gender": "Female",
"dob": "31-12-1987",
"impact": "Not Applicable",
"checked": false,
"score": "Updated",
"assigned_to": [
{
"co_score": 54,
"dl": "CAT1",
"sub_impact": "Applicable",
"comments": "Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book."
},
{
"co_score": 20,
"dl": "CAT2",
"sub_impact": "Not Applicable",
"comments": "Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book."
}
]
},
{
"id": 3,
"first_name": "Male",
"last_name": "Record Another",
"email": "male.recordanother@gmail.com",
"gender": "Male",
"dob": "31-10-2017",
"impact": "Not Applicable",
"checked": false,
"score": 25,
"assigned_to": [
{
"co_score": 100,
"dl": "CAT3",
"sub_impact": "Applicable",
"comments": "Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book."
},
{
"co_score": 2,
"dl": "CAT2",
"sub_impact": "Not Applicable",
"comments": "Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book."
}
]
},
{
"first_name": "Male",
"last_name": "One More Record",
"email": "male.onemorerecord@gmail.com",
"gender": "Male",
"dob": "08-08-1984",
"impact": "Applicable",
"id": 6,
"checked": false,
"score": 67,
"assigned_to": [
{
"co_score": 4,
"dl": "CAT1",
"sub_impact": "Applicable",
"comments": "Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book."
},
{
"co_score": 85,
"dl": "CAT3",
"sub_impact": "Not Applicable",
"comments": "Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book."
}
]
},
{
"first_name": "Female",
"last_name": "Another Record",
"email": "female.anotherrecord@gmail.com",
"gender": "Female",
"dob": "2000-07-15",
"impact": "Applicable",
"id": 7,
"checked": false,
"score": 85,
"assigned_to": [
{
"co_score": 34,
"dl": "CAT3",
"sub_impact": "Applicable",
"comments": "Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book."
},
{
"co_score": 55,
"dl": "CAT2",
"sub_impact": "Not Applicable",
"comments": "Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book."
}
]
},
{
"id": 8,
"first_name": "New",
"last_name": "Record",
"email": "new.record@gmail.com",
"gender": "Male",
"dob": "2020-12-17",
"impact": "Not Applicable",
"score": 60,
"assigned_to": [
{
"co_score": 94,
"dl": "CAT1",
"sub_impact": "Applicable",
"comments": "Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book."
},
{
"co_score": 85,
"dl": "CAT3",
"sub_impact": "Not Applicable",
"comments": "Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book."
}
]
}
]
app.component.ts
getApplicableCounts() {
this.impactCount = {applicable:0, notapplicable:0, fyi: 0}
this.allUser.forEach(row => {
row.assigned_to.forEach(sub => {
console.log(sub.sub_impact)
if (sub.sub_impact === 'Applicable') {
this.impactCount.applicable++;
} else if (sub.sub_impact === 'Not Applicable') {
this.impactCount.notapplicable++;
} else if (sub.sub_impact === 'FYI') {
this.impactCount.fyi++;
}
});
});
getLatestUser() {
this.commonService.getAllUser().subscribe((response) => {
this.allUser = response;
this.totalRecords = this.allUser.length;
console.log(this.totalRecords);
})
}
ngOnInit() {
this.getLatestUser();
}
What should I write in my getLatestUser function to display the count of applicable: , not applicable: , n fyi:
回答1:
This was solved in this question when I was solving a different problem. To get the counts of the impact you need to add the following variable and function:
impactCount = {
applicable: 0,
notApplicable: 0,
fyi: 0
};
getImpactCounts() {
this.impactCount = {applicable: 0, notApplicable: 0, fyi: 0};
this.allUser.forEach(row => {
if (row.impact === 'Applicable') {
this.impactCount.applicable++;
} else if (row.impact === 'Not Applicable') {
this.impactCount.notApplicable++;
} else if (row.impact === 'FYI') {
this.impactCount.fyi++;
}
});
}
and then add it to the html as such
<div>
Applicable: {{impactCount.applicable}}
Not Applicable: {{impactCount.notApplicable}}
FYI: {{impactCount.fyi}}
</div>
and then all you need to do is call getApplicableCounts() from your getLatestUser() function and any time data changes (so pretty much ever crud call). Here is a working stackblitz that is also linked in the comment section of the other question.
来源：https://stackoverflow.com/questions/65217548/angular-ts-json-from-total-records-how-to-know-the-count-of-matching-the-specif