Matrix half of the total rows, output code at N row_count

Question

I have a matrix field where the client can add as many rows as they like.

The rows get output to a 2 column layout:

<div class="col1">

    <p>Matrix row 1</p>

    <p>Matrix row 2</p>

</div>
<div class="col2">

    <p>Matrix row 3</p>

    <p>Matrix row 4</p>

</div>

So the template code would be:

{matrix_field}

<div class="col1">

    <p>{matrix_data}</p>

{if row_count == (total_rows / 2)}
</div>
<div class="col2">
{/if}

{/matrix_field}

</div>

Of course {if row_count == (total_rows / 2)} doesn't exist. How can this be achieved?

Answer 1

Using grid and native (2.9.2) it’s quite cool, you can now do could do:

{if grid_field:count == grid_field:total_results / 2}

In our case I wanted to create a two column set of lists :)

Answer 2

{if row_count == total_rows / 2} is not exist

actually, is exist - from version 2.9.0. I tested it with EE v2.9.2 & Matrix 2.6

Mathematic Operators

example for your case - split to 2 columns:

{if (total_rows % 2 == 0 && total_rows / 2 == row_count) || (total_rows % 2 == 1 && (total_rows+1) / 2  == row_count)}
                    <hr>
{/if}

available mathematic operators

+           Addition
-           Subtraction / Negation
*           Multiplication
** and ^    Exponentiation
/           Division
%           Remainder of one number divided by another

For other cases where you need to calculate something u can use MX Calc add-on - it's free.

Answer 3

I've done that before using the simple math add-on to do the calculation of where to break the matrix rows into their respective columns. Basically just plug in the matrix total rows variable, device by two and round up if you can (so that if there is an uneven number, the first column gets the extra one) and then use a conditional to insert the closing of column one and opening of column 2 (by comparing the result of the path to the current row count), and similarly use a conditional to close the second column. I don't recall if the Simple Math add-on actually supports rounding in any particular direction though - but there's more than one math add-on for EE that you may consider.