format in tab.text() not working as expected

[mauf3r]

Hi there,

I am trying to show some KPIs, inspired by what streamlit's st.metric() does.
And tgb.text() gives me some headache...

The basic Idea works with:

self.x = 12345,67890
with tgb.part('card'):
    tgb.text(f"**Headline**", mode='md')
    tgb.text("{x}")

1st issue: format does not work as expected

self.x = 12345,67890
with tgb.part('card'):
    tgb.text(f"**Headline**", mode='md')
    tgb.text("{x}")
    tgb.text("{x}", format="%.0f")
    tgb.text("{x}", format="%,.0f")

Result:
12345.6789
12346
12.345,679

2nd issue: handling of expressions is not working as expected

self.x = {'a': {'b': {'': 12345.67890}}}
with tgb.part('card'):
    tgb.text(f"**Headline**", mode='md')
    tgb.text("{x.get('a',{}).get('b',{}).get('',0)")

taipy_app-1 | x.get('a',{
taipy_app-1 | ^
taipy_app-1 | SyntaxError: '{' was never closed

Fun-Fact 1:

 tgb.text("{x.get('a').get('b',{}).get('',0)")
 tgb.text("{x.get('a',{}).get('b').get('',0)")

works!

Fun-Fact 2:
using x.get('a') the format arg is completely ignored, with x['a'] it works as described above

[FlorianJacta]

In fact, we have a metric visual element that will be released in the next release.

You can use our develop branch by pip install git+https://github.com/Avaiga/taipy.git. That will take more time than normal.

You have an issue in this sentence; you have not closed the { as the error is saying:

tgb.text("{x.get('a',{}).get('b',{}).get('',0)") -> tgb.text("{x.get('a',{}).get('b',{}).get('',0)"})

I suggest not having {} inside a bound expression/variable. You should create a function that taipy is calling. For example:

def format_number(x):
    # do whatever you want here. When *state.x* changes, this function will be called.
    return x.get('a',{}).get('b',{}).get('',0)

self.x = {'a': {'b': {'': 12345.67890}}}
with tgb.part('card'):
    tgb.text(f"**Headline**", mode='md')
    tgb.text("{format_number(x)}")

I am not sure about the error with "%,.0f".

[mauf3r]

Unfortunately, that seems to be one of the issues you mentioned.
So just for the records - unless I made a mistake elsewhere:

    def convert(self, x):
        x_new =  x.get('a',{}).get('b',{}).get('',0)
        return f"{x_new:.,0f}"

    def home_page(self):
        with tgb.part("container"):
                with tgb.part('card'):
                    tgb.text("{convert(x)}", mode='md')

Does not give any output.

[FlorianJacta]

Try to define the function convert(x) globally without the self in the parameters.