I have to take the count of number of item in my invoice_line in my invoice [[repeatIn(o.move_lines,'line')]] --------------->here I am creating the object [[ reduce(lambda x, obj: x+obj.line , list , 0 ) ]] -------------------->expression to return the number of line in my invoice so my desired output should be like this *| location | code |

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How to use lambda expression in RML report

lambda

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Vigneshwaran

I have to take the count of number of item in my invoice_line in my invoice

<section>
<para>[[repeatIn(o.move_lines,'line')]]</para>--------------->here I am creating the object
<blockTable>
<tr>
<td>
<para style="terp_tblheader_General_Centre1">[[ reduce(lambda x, obj: x+obj.line , list , 0 ) ]] </para>-------------------->expression to return the number of line in my invoice
</td><t/r></blocktable></section>

so my desired output should be like this

| location | code | product | qty

House1 10 ipad 1

House2 25 iphone 2

----------------------------

total 3 ------------------------>For this how to use lambda function..In RML report

Anand Patel

Hi,

Lambda is the python function and you can use eeasily all the python function in the RML.

but if you need to count the no of lines of the invoice then you can pass one method which is called from the RML and revert the answer form the report's py file

i.e.

[[repeatIn(o.move_lines,'line')]] this is your rml loop for the invoice line. now you just need to call one method in the loop so it will count the and revert from the py side to rml and you will have your desired output

Vigneshwaran

编写者

thanks for your answer, but i directly create a function in python and call it in my rml report like this, def _sum_qty(self): total = 0 for line in picking.move_lines: total+=line.product_qty str(total) print total return total

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