Knowledge::Internal
Filters
{% if a > b and b > c %}
You can also use filters in the if expression. For example:
{% if messages|length >= 100 %}
You have lots of messages today!
{% endif %}
Complex expressions
All of the above can be combined to form complex expressions. For such expressions, it can be important to know how the operators are grouped when the expression is evaluated - that is, the precedence rules. The precedence of the operators, from lowest to highest, is as follows:
- or
- and
- not
- in
- ==, !=, <, >, <=, >=
(This follows Python exactly). So, for example, the following complex if tag:
{% if a == b or c == d and e %}
...will be interpreted as:
(a == b) or ((c == d) and e)
If you need different precedence, you will need to use nested if tags. Sometimes that is better for clarity anyway, for the sake of those who do not know the precedence rules.
Parameters
Returns/Result
Reference
On the forum about Filters
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Product: . Written by alembagheri tahmas 07/12/13 at 13:37:32
Hi there,I am trying to use an external MySQL DB in dataease. I have successfully create the ODBC link and added the DB to dataease. I can also access the DB from dataease. Now, just for testing purposes, I am trying to create a simple report b...
Product: DataEase for Windows 7.x. Written by George Washington 11/04/14 at 08:26:17
no se pude exportar ahora archivos a pdf, ni a excel o otros cosa mala. en verdad creo que hace faltaen las versiones anteriores me funcionaba mas o menos bien. le hace falta a los aplicativos que se desarrollan en Dataeasegr...
Product: DataEase 8 Reporter. Written by eduardo paez 02/05/14 at 14:40:11
Thanks. Anyway I'm trying to use this fuction but it seems to me that it doesn't work on 8.2. I tried also in a DQL.There's something wrong?<img src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAA9IAAAJ3CAYAAAB4NWk3AAAAAXNSR0IArs4...
Product: . Written by Marco Marchesi 15/02/16 at 14:50:46
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Product: Dataease [{8}]FIVE. Written by Chamil Rajindra 21/02/19 at 10:17:46
Thanks for the very good explanation!AS...
Product: . Written by afonso santos 28/10/19 at 00:50:14
I am pleased to see that the migration from Dos 4.53 is then sa 5.5 works. A really useful thing would be a compiler of SQL languages. Will you get there?Original Text:Mi compiaccio a vedere che la migrazione da Dos 4.53 รจ poi sa 5.5 funzio...
Product: . Written by Grossi Gioacchino 18/11/19 at 14:33:44
How can i delete a Style sheet?...
Product: Dataease [{8}]FIVE. Written by Rainer 22/03/21 at 11:13:10
I run W7 and since a few days Dataease 8.5 is not starting any more, do you have an idea? i installed it again but that did not help....
Product: Dataease [{8}]FIVE. Written by Rainer 08/06/21 at 14:12:40
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Product: . Written by Hiralal Rampul 01/12/21 at 17:47:10
On the blog about Filters