Filtering with multiple variable in vue js

Question

I am working on filtering a table in vue js. I have done filtering the table with name & date. But now I don't understand how to add another filter with them.

Here is a codepen link codepen

my computed property is like this---

filterItem() {
 let filterClient = this.selectedClient;
 let startDate = this.localizeDate(this.startDate);
 let endDate = this.localizeDate(this.endDate);
 let filterBranch = this.selectedBranch;
 const itemsByClient = filterClient
 ? this.salesReport.filter((item) => item.client_name === filterClient) && item.business_branch=== filterBranch)
 : this.salesReport;
 return itemsByClient.filter((item) => {
 const itemDate = new Date(item.date);
 if (startDate && endDate) {
 return startDate <= itemDate && itemDate <= endDate;
 }
 if (startDate && !endDate) {
 return startDate <= itemDate;
 }
 if (!startDate && endDate) {
 return itemDate <= endDate;
 }
 return true;
 });
},

It works when I give both name & business branch but I want to filter the data with or without name.

For example, If I select a client then the table shows the client. Now what I want is, when I select a branch(the other fields remains empty) then the table shows the rows associated with the selected branch

Answer 1

Just set up your filter functions and chain them.

filterItem() {
 let filterClient = this.selectedClient;
 let startDate = this.localizeDate(this.startDate);
 let endDate = this.localizeDate(this.endDate);
 let filterBranch = this.selectedBranch;
 const myClientFilterFunction = (item) => filterClient
 ? item.client_name === filterClient
 : true;
 const myBranchFilterFunction = (item) => filterBranch
 ? item.business_branch=== filterBranch
 : true;
 const myDateFilterFunction = (item) => {
 const itemDate = new Date(item.date);
 if (startDate && endDate) {
 return startDate <= itemDate && itemDate <= endDate;
 }
 if (startDate && !endDate) {
 return startDate <= itemDate;
 }
 if (!startDate && endDate) {
 return itemDate <= endDate;
 }
 return true;
 };
 return this.salesReport
 .filter(myClientFilterFunction)
 .filter(myBranchFilterFunction)
 .filter(myDateFilterFunction);
}

To achieve a more complex logic, like filtering only for branches or for clients, just add the filter functions programatically, e.g.

 let report = this.salesReport;
 if(this.selectedClient) {
 report = report.filter(myClientFilterFunction);
 }
 if(this.selectedBranch) {
 report = report.filter(myBranchFilterFunction);
 }
 report = report.filter(myDateFilterFunction);
 return report;