This repository demonstrates how to use a decorator approach to build a FastHTML app integrated with Great Tables.
By decorating a function that returns a GT instance with gt2fasthtml, you can treat the function's result as a FastHTML div component. Additional div parameters can be set in the decorator, like @gt2fasthtml(id="gt").
from functools import cache
import polars as pl
from fasthtml.common import (H1, H2, Card, Div, Form, Grid, Input, Main, Title,
fast_app)
from great_tables import GT, html
from great_tables.data import sza
from ft_gt import gt2fasthtml
app, rt = fast_app()
@cache
def get_sza_pivot():
return (
pl.from_pandas(sza)
.filter((pl.col("latitude") == "20") & (pl.col("tst") <= "1200"))
.select(pl.col("*").exclude("latitude"))
.drop_nulls()
.pivot(values="sza", index="month", on="tst", sort_columns=True)
)
@gt2fasthtml(id="gt")
def get_gtbl(color1: str = "#663399", color2: str = "#FFA500"):
return (
GT(get_sza_pivot(), rowname_col="month")
.data_color(
domain=[90, 0],
palette=[color1, "white", color2],
na_color="white",
)
.tab_header(
title="Solar Zenith Angles from 05:30 to 12:00",
subtitle=html("Average monthly values at latitude of 20°N."),
)
.sub_missing(missing_text="")
)
@app.post("/submit")
def post(d: dict):
return get_gtbl(**d)
@app.get("/")
def homepage():
return (
Title("FastHTML-GT Website"),
H1("Great Tables shown in FastHTML", style="text-align:center"),
Main(
Form(
hx_post="/submit",
hx_target="#gt",
hx_trigger="input",
hx_swap="outerHTML",
)(
Grid(
Div(),
Card(
H2("Color1"),
Input(type="color", id="color1", value="#663399"),
),
Card(
H2("Color2"),
Input(type="color", id="color2", value="#FFA500"),
),
Div(),
)
),
get_gtbl(),
cls="container",
),
)https://gallery.fastht.ml/vizualizations/great_tables_tables/display