Ordering a list of IP addresses using Angular Material table sorting

Question

Ordering a list of IP addresses using Angular Material table sorting

I am baffled by the fact that Material Table sorting does not properly arrange the table. I have created a stackblitz example to demonstrate this.

Expected order - Sorting lowest IP first:

"10.16.0.8"
"10.16.0.16"
"10.16.0.32"
"10.16.10.35"
"10.16.10.64"
"10.16.10.120"

After clicking the button to sort highest, the expected output would be:

"10.16.10.120"
"10.16.10.64"
"10.16.10.35"
"10.16.0.32"
"10.16.0.16"
"10.16.0.8"

However, the current output when sorting now may look like:

10.16.0.16
10.16.0.32
10.16.0.8
10.16.10.120
10.16.10.35
10.16.10.64

angular typescript angular-material

Answer 1

Answer №1

It's important to consider that when ordering alphabetically, numbers with fewer digits come before those with more digits (e.g., 120 is less than 9). To ensure proper sorting, you may need to transform your IPs to have the same number of digits.

ipsNormalized = this.ips   
    .map(x => x.split("."))
    .map((x: string[]) => {
      return x.map(y => ("000" + y).slice(-3)).join(".");
    })
    .sort()                  
    .map(x => x.split("."))  
    .map((x: string[]) => {
      return x.map(y => +y).join(".");
    });

Check out the example on StackBlitz

To update: To sort a Mat-table, simply add a new property called "normalize" to your data

element = ELEMENT_DATA.map((x: any) => ({
    ...x,
    normalize: x.weight
      .split(".")
      .map((y: string[]) => ("000" + y).slice(-3))
      .join(".")
  }));
  dataSource = new MatTableDataSource(this.element);

Specify this new property in the header for sorting purposes (mat-sort-header="normalize")

<ng-container matColumnDef="weight">
        <th mat-header-cell *matHeaderCellDef mat-sort-header="normalize"> Weight</th>
        <td mat-cell *matCellDef="let element"> {{element.weight}} </td>
      </ng-container>

Here is a new StackBlitz example

Answer 2

It's important to consider that when ordering alphabetically, numbers with fewer digits come before those with more digits (e.g., 120 is less than 9). To ensure proper sorting, you may need to transform your IPs to have the same number of digits.

ipsNormalized = this.ips   
    .map(x => x.split("."))
    .map((x: string[]) => {
      return x.map(y => ("000" + y).slice(-3)).join(".");
    })
    .sort()                  
    .map(x => x.split("."))  
    .map((x: string[]) => {
      return x.map(y => +y).join(".");
    });

Check out the example on StackBlitz

To update: To sort a Mat-table, simply add a new property called "normalize" to your data

element = ELEMENT_DATA.map((x: any) => ({
    ...x,
    normalize: x.weight
      .split(".")
      .map((y: string[]) => ("000" + y).slice(-3))
      .join(".")
  }));
  dataSource = new MatTableDataSource(this.element);

Specify this new property in the header for sorting purposes (mat-sort-header="normalize")

<ng-container matColumnDef="weight">
        <th mat-header-cell *matHeaderCellDef mat-sort-header="normalize"> Weight</th>
        <td mat-cell *matCellDef="let element"> {{element.weight}} </td>
      </ng-container>

Here is a new StackBlitz example

Answer 3

Answer №2

Arranging items is accomplished by evaluating strings, akin to Java, it follows the "lexicographical order", for further details refer to this article

To organize them based on numerical value, dots must be eliminated, and the arrangement should retain the appearance of dots in the display.

Answer 4

Arranging items is accomplished by evaluating strings, akin to Java, it follows the "lexicographical order", for further details refer to this article

To organize them based on numerical value, dots must be eliminated, and the arrangement should retain the appearance of dots in the display.

Ordering a list of IP addresses using Angular Material table sorting

Answer №1

Answer №2

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