仅当qweb报表中存在数据时，如何打印表头和表数据

Question

How can I print a table header and table data only if the data is present in qweb reports.

If data is not present, table header and data should be empty

Answer 1

u can use a condition t-if:

<t t-if="condition">
<p>Test</p></t>

https://www.odoo.com/documentation/10.0/reference/qweb.html

Answer 2

By using <t t-set="flag" t-value="0"> initialise a flag. Then check whether any data is present in the table data by using for loop .

If any data is present, set the t-value of flag inside the for loop as 1 . Then print the table header and data only when the flag's value is 1