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How to handle multiple dropdown filters on a page in Angular 6?
How to use jQuery with Angular?How to detect a route change in Angular?Angular 2 - How to listen to event without a template?How can I close a dropdown on click outside?How to bundle an Angular app for productionAngular 2 router evaluating multiple route parametersAngular 2: can custom component handle its own events?Filtering Results of Observable Before Subscribing in Angular AppBuilding an API Call Holding Multiple Filter-selected Values in Angular AppModifying the CSS of ng2-completer
So here is the scenario:
There are 4 dropdown filters(namely a,b,c,d)on a webpage.
In case the value received by the event triggered is "-1" or "undefined" , the complete data received from the API needs to be displayed while in other cases we need to match and display the matching entries.
The issue is that at any point there can any number of filters applied and for the same reason we have to handle every possible permutation. A normal approach is becoming really cumbersome and has lots of if else scenarios.
Is there is simpler approach to handling such case ?
Thanks.
angular asked Mar 7 at 5:02
Mukul_VashisthaMukul_Vashistha
2113
|
show 3 more comments
So here is the scenario:
There are 4 dropdown filters(namely a,b,c,d)on a webpage.
In case the value received by the event triggered is "-1" or "undefined" , the complete data received from the API needs to be displayed while in other cases we need to match and display the matching entries.
The issue is that at any point there can any number of filters applied and for the same reason we have to handle every possible permutation. A normal approach is becoming really cumbersome and has lots of if else scenarios.
Is there is simpler approach to handling such case ?
Thanks.
angular asked Mar 7 at 5:02
Mukul_VashisthaMukul_Vashistha
2113
what i understand from your question is that, you want to apply the options that are selected from dropdown as filters on data that is provided by API... Is that right?
– Krishna
Mar 7 at 5:22
@Krishna- Yes Sir and the data displayed should be matching the applied filter/s
– Mukul_Vashistha
Mar 7 at 5:26
Is it your own API or something from a 3rd party?
– abney317
Mar 7 at 5:32
1
Instead of calling api again you can store the full data in variable and apply pipe filter in angular and pass the selected values as params to the pipe and your logic to filter data goes in pipe
– Krishna
Mar 7 at 5:40
@abney317 - Our own API.
– Mukul_Vashistha
Mar 7 at 5:55
|
show 3 more comments
So here is the scenario:
There are 4 dropdown filters(namely a,b,c,d)on a webpage.
In case the value received by the event triggered is "-1" or "undefined" , the complete data received from the API needs to be displayed while in other cases we need to match and display the matching entries.
The issue is that at any point there can any number of filters applied and for the same reason we have to handle every possible permutation. A normal approach is becoming really cumbersome and has lots of if else scenarios.
Is there is simpler approach to handling such case ?
Thanks.
angular asked Mar 7 at 5:02
Mukul_VashisthaMukul_Vashistha
2113
So here is the scenario:
There are 4 dropdown filters(namely a,b,c,d)on a webpage.
In case the value received by the event triggered is "-1" or "undefined" , the complete data received from the API needs to be displayed while in other cases we need to match and display the matching entries.
The issue is that at any point there can any number of filters applied and for the same reason we have to handle every possible permutation. A normal approach is becoming really cumbersome and has lots of if else scenarios.
Is there is simpler approach to handling such case ?
Thanks.
angular angular asked Mar 7 at 5:02
Mukul_VashisthaMukul_Vashistha
2113
asked Mar 7 at 5:02
Mukul_VashisthaMukul_Vashistha
2113
asked Mar 7 at 5:02
Mukul_VashisthaMukul_Vashistha
2113
asked Mar 7 at 5:02
Mukul_VashisthaMukul_Vashistha
2113
asked Mar 7 at 5:02
Mukul_VashisthaMukul_Vashistha
2113
2113
what i understand from your question is that, you want to apply the options that are selected from dropdown as filters on data that is provided by API... Is that right?
– Krishna
Mar 7 at 5:22
@Krishna- Yes Sir and the data displayed should be matching the applied filter/s
– Mukul_Vashistha
Mar 7 at 5:26
Is it your own API or something from a 3rd party?
– abney317
Mar 7 at 5:32
1
Instead of calling api again you can store the full data in variable and apply pipe filter in angular and pass the selected values as params to the pipe and your logic to filter data goes in pipe
– Krishna
Mar 7 at 5:40
@abney317 - Our own API.
– Mukul_Vashistha
Mar 7 at 5:55
|
show 3 more comments
what i understand from your question is that, you want to apply the options that are selected from dropdown as filters on data that is provided by API... Is that right?
– Krishna
Mar 7 at 5:22
@Krishna- Yes Sir and the data displayed should be matching the applied filter/s
– Mukul_Vashistha
Mar 7 at 5:26
Is it your own API or something from a 3rd party?
– abney317
Mar 7 at 5:32
1
Instead of calling api again you can store the full data in variable and apply pipe filter in angular and pass the selected values as params to the pipe and your logic to filter data goes in pipe
– Krishna
Mar 7 at 5:40
@abney317 - Our own API.
– Mukul_Vashistha
Mar 7 at 5:55
what i understand from your question is that, you want to apply the options that are selected from dropdown as filters on data that is provided by API... Is that right?
– Krishna
Mar 7 at 5:22
what i understand from your question is that, you want to apply the options that are selected from dropdown as filters on data that is provided by API... Is that right?
– Krishna
Mar 7 at 5:22
@Krishna- Yes Sir and the data displayed should be matching the applied filter/s
– Mukul_Vashistha
Mar 7 at 5:26
@Krishna- Yes Sir and the data displayed should be matching the applied filter/s
– Mukul_Vashistha
Mar 7 at 5:26
Is it your own API or something from a 3rd party?
– abney317
Mar 7 at 5:32
Is it your own API or something from a 3rd party?
– abney317
Mar 7 at 5:32
1
1
Instead of calling api again you can store the full data in variable and apply pipe filter in angular and pass the selected values as params to the pipe and your logic to filter data goes in pipe
– Krishna
Mar 7 at 5:40
Instead of calling api again you can store the full data in variable and apply pipe filter in angular and pass the selected values as params to the pipe and your logic to filter data goes in pipe
– Krishna
Mar 7 at 5:40
@abney317 - Our own API.
– Mukul_Vashistha
Mar 7 at 5:55
@abney317 - Our own API.
– Mukul_Vashistha
Mar 7 at 5:55
|
show 3 more comments
1 Answer
1
active
oldest
votes
First check all of them to see if they are -1
if a==-1 or b==-1 or c==-1 or d==-1
retrieve all
else
retrieve based on values
this way you sure that in the else block non of them is null or -1,hope it helps
answered Mar 7 at 6:10
ehsan kianiehsan kiani
1128
Well this wouldn't serve the purpose since the else part would still need a lot of ifs to handle all the permutations since we do not know how many filters will be applied at any point.
– Mukul_Vashistha
Mar 7 at 9:09
Have you consider pushing all filters in array and send it to server?
– ehsan kiani
Mar 7 at 15:30
add a comment |
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First check all of them to see if they are -1
if a==-1 or b==-1 or c==-1 or d==-1
retrieve all
else
retrieve based on values
this way you sure that in the else block non of them is null or -1,hope it helps
answered Mar 7 at 6:10
ehsan kianiehsan kiani
1128
Well this wouldn't serve the purpose since the else part would still need a lot of ifs to handle all the permutations since we do not know how many filters will be applied at any point.
– Mukul_Vashistha
Mar 7 at 9:09
Have you consider pushing all filters in array and send it to server?
– ehsan kiani
Mar 7 at 15:30
add a comment |
First check all of them to see if they are -1
if a==-1 or b==-1 or c==-1 or d==-1
retrieve all
else
retrieve based on values
this way you sure that in the else block non of them is null or -1,hope it helps
answered Mar 7 at 6:10
ehsan kianiehsan kiani
1128
Well this wouldn't serve the purpose since the else part would still need a lot of ifs to handle all the permutations since we do not know how many filters will be applied at any point.
– Mukul_Vashistha
Mar 7 at 9:09
Have you consider pushing all filters in array and send it to server?
– ehsan kiani
Mar 7 at 15:30
add a comment |
First check all of them to see if they are -1
if a==-1 or b==-1 or c==-1 or d==-1
retrieve all
else
retrieve based on values
this way you sure that in the else block non of them is null or -1,hope it helps
answered Mar 7 at 6:10
ehsan kianiehsan kiani
1128
First check all of them to see if they are -1
if a==-1 or b==-1 or c==-1 or d==-1
retrieve all
else
retrieve based on values
this way you sure that in the else block non of them is null or -1,hope it helps
answered Mar 7 at 6:10
ehsan kianiehsan kiani
1128
answered Mar 7 at 6:10
ehsan kianiehsan kiani
1128
answered Mar 7 at 6:10
ehsan kianiehsan kiani
1128
answered Mar 7 at 6:10
ehsan kianiehsan kiani
1128
1128
Well this wouldn't serve the purpose since the else part would still need a lot of ifs to handle all the permutations since we do not know how many filters will be applied at any point.
– Mukul_Vashistha
Mar 7 at 9:09
Have you consider pushing all filters in array and send it to server?
– ehsan kiani
Mar 7 at 15:30
add a comment |
Well this wouldn't serve the purpose since the else part would still need a lot of ifs to handle all the permutations since we do not know how many filters will be applied at any point.
– Mukul_Vashistha
Mar 7 at 9:09
Have you consider pushing all filters in array and send it to server?
– ehsan kiani
Mar 7 at 15:30
Well this wouldn't serve the purpose since the else part would still need a lot of ifs to handle all the permutations since we do not know how many filters will be applied at any point.
– Mukul_Vashistha
Mar 7 at 9:09
Well this wouldn't serve the purpose since the else part would still need a lot of ifs to handle all the permutations since we do not know how many filters will be applied at any point.
– Mukul_Vashistha
Mar 7 at 9:09
Have you consider pushing all filters in array and send it to server?
– ehsan kiani
Mar 7 at 15:30
Have you consider pushing all filters in array and send it to server?
– ehsan kiani
Mar 7 at 15:30
add a comment |
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what i understand from your question is that, you want to apply the options that are selected from dropdown as filters on data that is provided by API... Is that right?
– Krishna
Mar 7 at 5:22
@Krishna- Yes Sir and the data displayed should be matching the applied filter/s
– Mukul_Vashistha
Mar 7 at 5:26
Is it your own API or something from a 3rd party?
– abney317
Mar 7 at 5:32
1
Instead of calling api again you can store the full data in variable and apply pipe filter in angular and pass the selected values as params to the pipe and your logic to filter data goes in pipe
– Krishna
Mar 7 at 5:40
@abney317 - Our own API.
– Mukul_Vashistha
Mar 7 at 5:55