[ic] [item-sub] - how to use [item-quantity] inside it?

[Luiz Carlos Maciel Junior]

Le 18/10/2019 à 11:48, Mark Johnson a écrit :
> On 10/17/19 1:16 PM, Luiz Carlos Maciel Junior wrote:
>> Hi,
>>
>> We need to improve the load speed of the basket and checkout pages from
>> our stores because the carts of our customers have an average of 60
>> different products and, also, we have a specific situation of 4 diferent
>> price levels per product according to a matrix customer x product. The
>> price and the discount area from interchange works for 2 of the prices,
>> but for the other 2 we calculate it in on-the-fly.
>>
>> We are moving the calcs from [item-calc] to [item-sub] tag as it gives
>> us an average of 60% reduction in load/processing the basket and
>> checkout, according to [benchmark].
>>
>> Inside the [item-sub] we need to use the code and quantity of the item
>> (from the cart) and a value from a scratch variable.
>>
>> This is the calculation we do today in basket.html (very slow, but works):
>>
>> ==========================================================
>> [tmp desconto]0.8375[/tmp]Â Â Â  <-- hypothetical value, just for
>> example, changes for each customer
>> ...
>> [item-list]
>> ...
>> Price per unit: [currency][item-calc][item-price noformat] *
>> $Tag->scratch('desconto')[/item-calc][/currency]
>> Subtotal      : [currency][item-calc]([item-price noformat] *
>> $Tag->scratch('desconto')) * [item-quantity][/item-calc][/currency]
>> ...
>> [/item-list]
> You would improve the speed above by converting all ITL into loop tags.
> Most of the time slowness in loops comes from the final reparse of the
> fully assembled loop body after the loop has finished processing. For a
> minor adjustment, you also don't need to invoke $Tag just to get at scratch:
>
> * Convert [currency]...[/currency] to [item-filter
> currency]...[/item-filter]
>
> * Convert $Tag->scratch('foo') to $Scratch->{foo}
>
> To answer your specific question though ...
>
>> ==========================================================
>>
>> We moved it to [item-sub] this way in basket.html (very fast, but works
>> partially):
>>
>> ==========================================================
>> [tmp desconto]0.8375[/tmp] <-- hypothetical value, just for example,
>> changes for each customer
>>
>> [item-list]
>> ...
>> [item-sub preco_unit_esp]
>> Â Â Â  my $code = shift;
>> Â Â Â  my $priceitem = $Tag->currency( { convert => 1 }, $Tag->price( {
>> code => $code, noformat => 1, interpolate => 1 } ) *
>> $Tag->scratch('desconto') );
>> Â Â Â  return $priceitem
>> [/item-sub]
>>
>> [item-sub subtotal_esp]
>> Â Â Â  my $code = shift;
>> Â Â Â  my $qt = $item->{quantity};
>> Â Â Â  my $subtotalitem = $Tag->currency( { convert => 1 }, $Tag->price(
>> { code => $code, noformat => 1, interpolate => 1 } ) *
>> $Tag->scratch('desconto') * $qt );
>> Â Â Â  return $subtotalitem
>> [/item-sub]
>>
>> Price per unit: [item-exec preco_unit_esp][item-code][/item-exec]
>> Subtotal      : [item-exec subtotal_esp][item-code][/item-exec]
>> ...
>> [/item-list]
> [snip]
>
>> Can somebody give me a light on how to make $qt return the current
>> [item-quantity] on the situation above?
> You can access the record in question as a hash using $Row. E.g.,
>
> [item-sub subtotal_esp]
>      $Tag->currency(
>          { convert => 1,},
>          $Tag->price({ code => $Row->{code}, noformat => 1, })
>          * $Scratch->{desconto}
>          * $Row->{quantity},
>      )
> [/item-sub]
> Subtotal: [item-exec subtotal_esp][/item-exec]


Hi Mark,

Thanks for your time.

Worked perfectly.


Best regards,

Luiz Carlos Maciel Junior
MKNET SYSTEMS INFORMATICA LTDA.