Cookbook

from reactable import embed_css

embed_css()

Insert links

import polars as pl
import htmltools as ht

from reactable import Reactable, Column

data = pl.DataFrame(
    {
        "Address": ["https://google.com", "https://yahoo.com", "https://duckduckgo.com"],
        "Site": ["Google", "Yahoo", "DuckDuckGo"],
    }
)

Reactable(
    data,
    columns={
        "Address": Column(
            cell=lambda info: ht.a(info.value, href=info.value, target="_blank"),
        ),
        "Site": Column(
            html=True,
            cell=lambda info: f'<a href="{info.value}" target="_blank">{info.value}</a>',
        ),
    },
)

Format color scales

Single column

from reactable import Reactable, Column, CellInfo
from reactable.data import cars_93

from mizani.palettes import gradient_n_pal


data = cars_93[["manufacturer", "model", "price"]]

pal = gradient_n_pal(["#ffe4cc", "#ff9500"])


def fmt_fill(ci: CellInfo):
    val_range = max(data["price"]) - min(data["price"])
    normalized = (ci.value - min(data["price"])) / val_range
    return {"background": pal(normalized)}


Reactable(
    data,
    columns={"price": Column(style=fmt_fill)},
    default_page_size=5,
)

Grid

from reactable import Reactable, Column, ColFormat, CellInfo
from reactable.data import nottem

from mizani.palettes import gradient_n_pal

pal = gradient_n_pal(["#7fb7d7", "#ffffbf", "#fc8d59"])

# flatten out monthly columns into a single list
# this lets us calculate the overall min and max
flat_vals = sum(nottem[:, 1:].to_dict().values(), [])


def fmt_fill(ci: CellInfo):
    if not isinstance(ci.value, float):
        return

    val_range = max(flat_vals) - min(flat_vals)
    normalized = (ci.value - min(flat_vals)) / val_range
    color = pal(normalized)

    return {"background": color}


Reactable(
    nottem,
    default_col_def=Column(
        style=fmt_fill,
        format=ColFormat(digits=1),
        min_width=50,
    ),
    # TODO: make year rowname
    columns={
        "year": Column(
            format=ColFormat(digits=0),
            row_header=True,
        ),
    },
    bordered=True,
    default_page_size=5,
)

Format changes

import polars as pl
from reactable import Reactable, Column, CellInfo

data = pl.DataFrame(
    {
        "Symbol": ["GOOG", "FB", "AMZN", "NFLX", "TSLA"],
        "Price": [1265.13, 187.89, 1761.33, 276.82, 328.13],
        "Change": [4.14, 1.51, -19.45, 5.32, -12.45],
    }
)

Reactable(
    data,
    columns={
        "Change": Column(
            # TODO: we should stringify, so people can
            # return ci.value directly
            cell=lambda ci: f"+{ci.value}" if ci.value >= 0 else str(ci.value),
            style=lambda ci: {
                "font-weight": 600,
                "color": "#008000" if ci.value > 0 else "#e00000",
            },
        )
    },
)

Format tags and badges

import polars as pl
from reactable import Reactable, Column, CellInfo

orders = pl.DataFrame(
    {
        "Order": [2300, 2301, 2302, 2303, 2304],
        "Created": ["2019-04-01", "2019-04-02", "2019-04-03", "2019-04-04", "2019-04-05"],
        # "Customer": ["Degas", "Cezanne", "Monet", "Manet", "Renoir"],
        "Status": ["Pending", "Paid", "Canceled", "Pending", "Paid"],
    }
)

tbl = Reactable(
    orders,
    columns={
        "Status": Column(
            cell=lambda ci: f'<span class="tag status-{ci.value.lower()}">{ci.value}</span>',
            html=True,
        )
    },
)

from IPython.display import display, HTML

display(
    HTML(
        """
<style>
.tag {
  display: inline-block;
  padding: 0.125rem 0.75rem;
  border-radius: 15px;
  font-weight: 600;
  font-size: 0.75rem;
}

.status-paid {
  background: hsl(116, 60%, 90%);
  color: hsl(116, 30%, 25%);
}

.status-pending {
  background: hsl(230, 70%, 90%);
  color: hsl(230, 45%, 30%);
}

.status-canceled {
  background: hsl(350, 70%, 90%);
  color: hsl(350, 45%, 30%);
}
</style>
"""
    )
)

tbl

import htmltools


def status_badge(color="#aaa", width="0.55rem", height=None):
    height = height or width
    return htmltools.span(
        style=(
            "display: inline-block;"
            "margin-right: 0.5rem;"
            f"width: {width};"
            f"height: {height};"
            f"background-color: {color};"
            "border-radius: 50%"
        )
    )


status_hsl = {
    "Paid": "hsl(214, 45%, 50%)",
    "Pending": "hsl(30, 97%, 70%)",
    "Canceled": "hsl(3, 69%, 50%)",
}

Reactable(
    orders,
    columns={
        "Status": Column(
            cell=lambda ci: htmltools.div(status_badge(color=status_hsl[ci.value]), str(ci.value)),
            html=True,
        )
    },
)

Bar charts

import htmltools

from reactable import Reactable, Column, CellInfo
from reactable.data import cars_93

data = cars_93[:5, ["make", "mpg_city", "mpg_highway"]]


def html_barchart(label, width="100%", height="1rem", fill="#00bfc4", background=None):
    """Create general purpose html fill bar."""

    bar = htmltools.div(style=f"background: {fill}; width: {width}; height: {height}")
    chart = htmltools.div(
        bar,
        style=htmltools.css(
            flex_grow=1,
            margin_left="0.5rem",
            background=background,
        ),
    )
    return htmltools.div(
        label,
        chart,
        style=htmltools.css(
            display="flex",
            align_items="center",
        ),
    )


def fmt_barchart(ci: CellInfo, **kwargs):
    """Format cell value into html fill bar."""

    width = f"{ci.value / max(data['mpg_city']) * 100}%"
    return html_barchart(ci.value, width=width, **kwargs)


Reactable(
    data,
    columns={
        "mpg_city": Column(
            name="MPG (city)",
            align="left",
            cell=fmt_barchart,
        ),
        "mpg_highway": Column(
            name="MPG (highway)",
            align="left",
            cell=lambda ci: fmt_barchart(ci, fill="#fc5185", background="#e1e1e1"),
        ),
    },
    default_page_size=5,
)

Positive and negative values

TODO

Background bar charts

TODO

Embed images

import polars as pl
import htmltools

from reactable import Reactable, Column, CellInfo

data = pl.DataFrame(
    {
        "Animal": ["beaver", "cow", "wolf", "goat"],
        "Body": [1.35, 465, 36.33, 27.66],
        "Brain": [8.1, 423, 119.5, 115],
    }
)


def fmt_image(ci: CellInfo):
    image = htmltools.img(
        src=f"/demos/cookbook/images/{ci.value}.png",
        style="height: 24px;",
        alt=ci.value,
    )
    return htmltools.TagList(
        htmltools.div(
            image,
            style="display: inline-block; width: 45px;",
        ),
        ci.value,
    )


Reactable(
    data,
    columns={
        "Animal": Column(cell=fmt_image),
        "Body": Column(name="Body (kg)"),
        "Brain": Column(name="Brain (g)"),
    },
)

Note that this example assumes the images are available (we did that by setting the resources: field in quarto).

Rating stars

# pip install faicons
import polars as pl
import htmltools

from faicons import icon_svg
from reactable import Reactable, Column, CellInfo

ratings = pl.DataFrame(
    {
        "Movie": [
            "Silent Serpent",
            "Nowhere to Hyde",
            "The Ape-Man Goes to Mars",
            "A Menace in Venice",
        ],
        "Rating": [3.65, 2.35, 4.5, 1.4],
        "Votes": [115, 37, 60, 99],
    }
)


def rating_stars(ci: CellInfo):
    to_fill = round(ci.value)
    # TODO: how to set aria?
    stars = [
        icon_svg(
            "star", stroke="orange" if ii <= to_fill else "#edf0f2", stroke_width=100, fill="white"
        )
        for ii in range(1, 6)
    ]
    return htmltools.div(*stars, title="{ci.value} out of 5 stars")


Reactable(
    ratings,
    columns={
        "Rating": Column(
            cell=rating_stars,
            html=True,
        )
    },
)

Show data from other columns

import htmltools

from reactable import Reactable, Column, CellInfo
from reactable.data import starwars

data = starwars[["name", "height", "mass", "gender", "homeworld", "species"]]


def fmt_name(ci: CellInfo):
    species = data["species"][ci.row_index]
    species = species if species is not None else "Unknown"

    return htmltools.div(
        htmltools.div(ci.value, style="font-weight: 600;"),
        htmltools.div(species, style="font-size: 0.75rem;"),
    )


Reactable(
    data,
    columns={
        "name": Column(
            cell=fmt_name,
            name="Character",
        ),
        "species": Column(show=False),
    },
    default_col_def=Column(v_align="center"),
    default_page_size=4,
)

from reactable import Reactable, Column, JS
from reactable.data import starwars

data = starwars[["name", "height", "mass", "gender", "homeworld", "species"]]

js_name = JS(
    """
    function(cellInfo) {
        const species = cellInfo.row["species"] || "Unknown"
        return `
            <div>
                <div style="font-weight: 600">${cellInfo.value}</div>
                <div style="font-size: 0.75rem">${species}</div>
            </div>
        `
    }
    """
)

Reactable(
    data,
    columns={
        "name": Column(
            cell=js_name,
            html=True,
        ),
        "species": Column(show=False),
    },
    default_col_def=Column(v_align="center"),
    default_page_size=6,
)

Total rows

Fixed

from reactable import Reactable, Column
from reactable.data import cars_93

data = cars_93[["manufacturer", "model", "type", "price"]]

Reactable(
    data,
    default_page_size=5,
    columns={
        "manufacturer": Column(footer="Total"),
        "price": Column(footer=f"${sum(data['price']):.2f}"),
    },
    default_col_def=Column(footer_style={"font-weight": "bold"}),
)

Dynamic

from reactable import JS

js_sum_price = JS(
    """
    function(column, state) {
        let total = 0
        state.sortedData.forEach(function(row) {
            total += row[column.id]
        })
        return total.toLocaleString('en-US', { style: 'currency', currency: 'USD' })
    }
    """
)

Reactable(
    data,
    searchable=True,
    default_page_size=5,
    min_rows=5,
    columns={
        "manufacturer": Column(footer="Total"),
        "price": Column(footer=js_sum_price),
    },
    default_col_def=Column(footer_style={"font-weight": "bold"}),
)

Nested tables

import polars as pl
import polars.selectors as cs

from reactable import Reactable, Column
from reactable.data import us_expenditures

data = (
    us_expenditures.to_polars()
    # tidy years from columns into rows
    .unpivot(cs.starts_with("19"), index="index")
)

year_dfs = list(g for k, g in data.group_by("variable"))
summary_df = data.group_by("variable").agg(n=pl.count())

Reactable(
    summary_df,
    # TODO: details should accept a function
    details=Column(
        details=lambda ri: Reactable(year_dfs[ri.row_index]).to_widget(),
    ),
)

/tmp/ipykernel_2087/1028257606.py:14: DeprecationWarning:

`pl.count()` is deprecated. Please use `pl.len()` instead.

Units on first row only

from reactable.data import cars_93
from reactable import Reactable, Column

data = cars_93[40:44, ["make", "length", "luggage_room"]]


def fmt_length(ci):
    return f"{ci.value}″"


def fmt_ft(ci):
    return f"{ci.value} <div class='units'>ft³</div>"


Reactable(
    data,
    class_="car-specs",
    columns={
        "length": Column(
            cell=lambda ci: fmt_length(ci) if ci.row_index == 0 else str(ci.value),
            class_="number",
        ),
        "luggage_room": Column(
            name="Luggage Room",
            cell=lambda ci: fmt_ft(ci) if ci.row_index == 0 else str(ci.value),
            html=True,
        ),
    },
)

Tooltips

Highlight cells

Highlight columns

Highlight rows

Highlight sorted headers

Highlight sorted columns

Borders between groups of data

Merge cells

Borders between columns

Style nested rows

Custom fonts

Custom sort indicators