How can I create an Angular Material Design table with infinite columns, for known number of rows?

Question

I have created an HTML table which will generate infinite columns based on the number of rows in the input data. I\'ve tried to use this SO p

Answer 1

the only thing you need is "loop" the matColumnDef. -see that we use [matColumnDef] and {{element[col]}}

If your table is like

    


  
{{col}}
    
 {{element[col]}} 
  

  

  

You only need transform your data and indicate the displayedColumns. You can do in a ngOnInit()

ngOnInit() {
    const head = this.data.map(x => x.name)
    const data: any[] = [];
    this.data.forEach((x, index) => {
      Object.keys(x).forEach((k, index2) => {
        data[index2] = data[index2] || {}
        data[index2][head[index]] = x[k]

      })
    })
    this.displayedColumns=head;
    this.dataSource = data.slice(1); //I remove the first element that was the "header"
  } 

See in stackblitz