Should I use Javascript Classes or Apex Classes in Lightning Web Components? Announcing the arrival of Valued Associate #679: Cesar Manara Planned maintenance scheduled April 17/18, 2019 at 00:00UTC (8:00pm US/Eastern) 2019 Moderator Election Q&A - Questionnaire 2019 Community Moderator Election ResultsWant to create select option from ApexAssign value of one field to other field of same object of selected list by clicking a button in list view of objectrepeat rendered for certain conditionHow do I transform SOQL result and output to PageBlockTable?FATAL_ERROR|System.QueryException: List has no rows for assignment to SObjectSLDS classes on (new) base Lightning web components don't workLightning Web Component for table rows and cellsIs there a way to load every label data and every SObject description data in Lightning Web Component using only Javascript without any Apex?When do @wire methods run (LWC)?Calling apex imperative method in lightning web component needs two click to show data

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Should I use Javascript Classes or Apex Classes in Lightning Web Components?



Announcing the arrival of Valued Associate #679: Cesar Manara
Planned maintenance scheduled April 17/18, 2019 at 00:00UTC (8:00pm US/Eastern)
2019 Moderator Election Q&A - Questionnaire
2019 Community Moderator Election ResultsWant to create select option from ApexAssign value of one field to other field of same object of selected list by clicking a button in list view of objectrepeat rendered for certain conditionHow do I transform SOQL result and output to PageBlockTable?FATAL_ERROR|System.QueryException: List has no rows for assignment to SObjectSLDS classes on (new) base Lightning web components don't workLightning Web Component for table rows and cellsIs there a way to load every label data and every SObject description data in Lightning Web Component using only Javascript without any Apex?When do @wire methods run (LWC)?Calling apex imperative method in lightning web component needs two click to show data



.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty margin-bottom:0;








6















I am working on designing a timesheet Lightning Web Component for my company. Internally, we use a sObject that tracks individual sessions, which then gets rolled up one way to generate payroll, and another way to create invoices. To that end, we don't have a timesheet sObject in our schema (we do have a paystub sObject, but we run payroll every two weeks and collect timesheets every week).



The general flow of what needs to happen is run a SOQL query, transform the data into rows (clients) and columns (dates), and then display the data for viewing and editing. The SOQL clearly happens in an Apex class, and the display is clearly happening in an LWC, but I am unclear about the transformation stage. Would it make sense to have an Apex class gather all the data, transform it, and then @wire the data to the LWC row by row? Or should I just use the Apex class to generate all of the data, @wire a list to the LWC, and use Javascript objects to sort everything into rows and columns?










share|improve this question







New contributor




Andrew Favaloro is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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  • 1





    If I had to design this, I would have created a wrapper class to collect all data within the Apex and then return the List<MyWrapperClass> to the LWC. This way I would keep all the logic of fetching/transforming/saving data consolidated at one place.

    – Jayant Das
    2 days ago

















6















I am working on designing a timesheet Lightning Web Component for my company. Internally, we use a sObject that tracks individual sessions, which then gets rolled up one way to generate payroll, and another way to create invoices. To that end, we don't have a timesheet sObject in our schema (we do have a paystub sObject, but we run payroll every two weeks and collect timesheets every week).



The general flow of what needs to happen is run a SOQL query, transform the data into rows (clients) and columns (dates), and then display the data for viewing and editing. The SOQL clearly happens in an Apex class, and the display is clearly happening in an LWC, but I am unclear about the transformation stage. Would it make sense to have an Apex class gather all the data, transform it, and then @wire the data to the LWC row by row? Or should I just use the Apex class to generate all of the data, @wire a list to the LWC, and use Javascript objects to sort everything into rows and columns?










share|improve this question







New contributor




Andrew Favaloro is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.















  • 1





    If I had to design this, I would have created a wrapper class to collect all data within the Apex and then return the List<MyWrapperClass> to the LWC. This way I would keep all the logic of fetching/transforming/saving data consolidated at one place.

    – Jayant Das
    2 days ago













6












6








6








I am working on designing a timesheet Lightning Web Component for my company. Internally, we use a sObject that tracks individual sessions, which then gets rolled up one way to generate payroll, and another way to create invoices. To that end, we don't have a timesheet sObject in our schema (we do have a paystub sObject, but we run payroll every two weeks and collect timesheets every week).



The general flow of what needs to happen is run a SOQL query, transform the data into rows (clients) and columns (dates), and then display the data for viewing and editing. The SOQL clearly happens in an Apex class, and the display is clearly happening in an LWC, but I am unclear about the transformation stage. Would it make sense to have an Apex class gather all the data, transform it, and then @wire the data to the LWC row by row? Or should I just use the Apex class to generate all of the data, @wire a list to the LWC, and use Javascript objects to sort everything into rows and columns?










share|improve this question







New contributor




Andrew Favaloro is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.












I am working on designing a timesheet Lightning Web Component for my company. Internally, we use a sObject that tracks individual sessions, which then gets rolled up one way to generate payroll, and another way to create invoices. To that end, we don't have a timesheet sObject in our schema (we do have a paystub sObject, but we run payroll every two weeks and collect timesheets every week).



The general flow of what needs to happen is run a SOQL query, transform the data into rows (clients) and columns (dates), and then display the data for viewing and editing. The SOQL clearly happens in an Apex class, and the display is clearly happening in an LWC, but I am unclear about the transformation stage. Would it make sense to have an Apex class gather all the data, transform it, and then @wire the data to the LWC row by row? Or should I just use the Apex class to generate all of the data, @wire a list to the LWC, and use Javascript objects to sort everything into rows and columns?







apex soql lightning-web-components






share|improve this question







New contributor




Andrew Favaloro is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.











share|improve this question







New contributor




Andrew Favaloro is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.









share|improve this question




share|improve this question






New contributor




Andrew Favaloro is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.









asked 2 days ago









Andrew FavaloroAndrew Favaloro

333




333




New contributor




Andrew Favaloro is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.





New contributor





Andrew Favaloro is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.






Andrew Favaloro is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.







  • 1





    If I had to design this, I would have created a wrapper class to collect all data within the Apex and then return the List<MyWrapperClass> to the LWC. This way I would keep all the logic of fetching/transforming/saving data consolidated at one place.

    – Jayant Das
    2 days ago












  • 1





    If I had to design this, I would have created a wrapper class to collect all data within the Apex and then return the List<MyWrapperClass> to the LWC. This way I would keep all the logic of fetching/transforming/saving data consolidated at one place.

    – Jayant Das
    2 days ago







1




1





If I had to design this, I would have created a wrapper class to collect all data within the Apex and then return the List<MyWrapperClass> to the LWC. This way I would keep all the logic of fetching/transforming/saving data consolidated at one place.

– Jayant Das
2 days ago





If I had to design this, I would have created a wrapper class to collect all data within the Apex and then return the List<MyWrapperClass> to the LWC. This way I would keep all the logic of fetching/transforming/saving data consolidated at one place.

– Jayant Das
2 days ago










1 Answer
1






active

oldest

votes


















5














Unless the transformation significantly reduces the amount of data you have to send from the server to the client, it most likely makes sense to do as much as possible in the client (JavaScript). JavaScript is far more efficient in CPU time than Apex, so you'll reduce the overall time the user has to wait for the results to appear. Also, if you decide you later want to provide different options (filtering, sorting, etc), you can avoid network activity entirely by using JavaScript as much as possible, allowing near-instant updates to the page.






share|improve this answer


















  • 1





    Adding color to this discussion: ES6 .map(), .filter() and .reduce() significantly improve UX at the expense of server-side reusability. You can still offload any helpers to a LWC utils file and find client-side reusability there.

    – tsalb
    2 days ago











  • I know that the LWC framework is built on top of ES5, how much of ES6 is available/unavailable?

    – Andrew Favaloro
    yesterday











  • @AndrewFavaloro this doc goes in to detail, but essentially, all of ES6 and ES7, most of ES8, and some of ES9.

    – sfdcfox
    yesterday











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1 Answer
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1 Answer
1






active

oldest

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active

oldest

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active

oldest

votes









5














Unless the transformation significantly reduces the amount of data you have to send from the server to the client, it most likely makes sense to do as much as possible in the client (JavaScript). JavaScript is far more efficient in CPU time than Apex, so you'll reduce the overall time the user has to wait for the results to appear. Also, if you decide you later want to provide different options (filtering, sorting, etc), you can avoid network activity entirely by using JavaScript as much as possible, allowing near-instant updates to the page.






share|improve this answer


















  • 1





    Adding color to this discussion: ES6 .map(), .filter() and .reduce() significantly improve UX at the expense of server-side reusability. You can still offload any helpers to a LWC utils file and find client-side reusability there.

    – tsalb
    2 days ago











  • I know that the LWC framework is built on top of ES5, how much of ES6 is available/unavailable?

    – Andrew Favaloro
    yesterday











  • @AndrewFavaloro this doc goes in to detail, but essentially, all of ES6 and ES7, most of ES8, and some of ES9.

    – sfdcfox
    yesterday















5














Unless the transformation significantly reduces the amount of data you have to send from the server to the client, it most likely makes sense to do as much as possible in the client (JavaScript). JavaScript is far more efficient in CPU time than Apex, so you'll reduce the overall time the user has to wait for the results to appear. Also, if you decide you later want to provide different options (filtering, sorting, etc), you can avoid network activity entirely by using JavaScript as much as possible, allowing near-instant updates to the page.






share|improve this answer


















  • 1





    Adding color to this discussion: ES6 .map(), .filter() and .reduce() significantly improve UX at the expense of server-side reusability. You can still offload any helpers to a LWC utils file and find client-side reusability there.

    – tsalb
    2 days ago











  • I know that the LWC framework is built on top of ES5, how much of ES6 is available/unavailable?

    – Andrew Favaloro
    yesterday











  • @AndrewFavaloro this doc goes in to detail, but essentially, all of ES6 and ES7, most of ES8, and some of ES9.

    – sfdcfox
    yesterday













5












5








5







Unless the transformation significantly reduces the amount of data you have to send from the server to the client, it most likely makes sense to do as much as possible in the client (JavaScript). JavaScript is far more efficient in CPU time than Apex, so you'll reduce the overall time the user has to wait for the results to appear. Also, if you decide you later want to provide different options (filtering, sorting, etc), you can avoid network activity entirely by using JavaScript as much as possible, allowing near-instant updates to the page.






share|improve this answer













Unless the transformation significantly reduces the amount of data you have to send from the server to the client, it most likely makes sense to do as much as possible in the client (JavaScript). JavaScript is far more efficient in CPU time than Apex, so you'll reduce the overall time the user has to wait for the results to appear. Also, if you decide you later want to provide different options (filtering, sorting, etc), you can avoid network activity entirely by using JavaScript as much as possible, allowing near-instant updates to the page.







share|improve this answer












share|improve this answer



share|improve this answer










answered 2 days ago









sfdcfoxsfdcfox

266k13212459




266k13212459







  • 1





    Adding color to this discussion: ES6 .map(), .filter() and .reduce() significantly improve UX at the expense of server-side reusability. You can still offload any helpers to a LWC utils file and find client-side reusability there.

    – tsalb
    2 days ago











  • I know that the LWC framework is built on top of ES5, how much of ES6 is available/unavailable?

    – Andrew Favaloro
    yesterday











  • @AndrewFavaloro this doc goes in to detail, but essentially, all of ES6 and ES7, most of ES8, and some of ES9.

    – sfdcfox
    yesterday












  • 1





    Adding color to this discussion: ES6 .map(), .filter() and .reduce() significantly improve UX at the expense of server-side reusability. You can still offload any helpers to a LWC utils file and find client-side reusability there.

    – tsalb
    2 days ago











  • I know that the LWC framework is built on top of ES5, how much of ES6 is available/unavailable?

    – Andrew Favaloro
    yesterday











  • @AndrewFavaloro this doc goes in to detail, but essentially, all of ES6 and ES7, most of ES8, and some of ES9.

    – sfdcfox
    yesterday







1




1





Adding color to this discussion: ES6 .map(), .filter() and .reduce() significantly improve UX at the expense of server-side reusability. You can still offload any helpers to a LWC utils file and find client-side reusability there.

– tsalb
2 days ago





Adding color to this discussion: ES6 .map(), .filter() and .reduce() significantly improve UX at the expense of server-side reusability. You can still offload any helpers to a LWC utils file and find client-side reusability there.

– tsalb
2 days ago













I know that the LWC framework is built on top of ES5, how much of ES6 is available/unavailable?

– Andrew Favaloro
yesterday





I know that the LWC framework is built on top of ES5, how much of ES6 is available/unavailable?

– Andrew Favaloro
yesterday













@AndrewFavaloro this doc goes in to detail, but essentially, all of ES6 and ES7, most of ES8, and some of ES9.

– sfdcfox
yesterday





@AndrewFavaloro this doc goes in to detail, but essentially, all of ES6 and ES7, most of ES8, and some of ES9.

– sfdcfox
yesterday










Andrew Favaloro is a new contributor. Be nice, and check out our Code of Conduct.









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Andrew Favaloro is a new contributor. Be nice, and check out our Code of Conduct.












Andrew Favaloro is a new contributor. Be nice, and check out our Code of Conduct.











Andrew Favaloro is a new contributor. Be nice, and check out our Code of Conduct.














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