Christmas crackers from the local supermarket often have the worst jokes. We say, 'there must be a better way'. Save up your favourite jokes this Christmas and hear the sound of guffaws 🤣 , not the silence of cringing faces 😬 .
It's database-backed, it's on the Web, it's in Python...and we didn't have to write a line of Javascript -- yep, we used Anvil:
Canvas Component
The anvil Canvas component gives us access to the browser's drawing APIs, along with easy mouse events -- so that seemed like the perfect way to build this app:
def draw_background(self):
img = URLMedia('_/theme/cracker.png')
c = self.canvas
m = self.margin
c.draw_image(img, m, 0, c.get_width() - 2*m, c.get_height())
def canvas_mouse_up(self, x, y, button, **event_args):
"""This method is called when a mouse button is pressed on this component"""
if (x < self.margin):
self.idx = (self.idx - 1) % len(self.jokes)
elif x > self.w - self.margin:
self.idx = (self.idx + 1) % len(self.jokes)
self.write_joke()
Batteries Included
Anvil's Python in the browser comes with Python's batteries included philosophy, from your favourite python libraries to f-strings.
import itertools
import textwrap
import random
class TellJokes(TellJokesTemplate):
def __init__(self, **properties):
self.init_components(**properties)
self.jokes = list(app_tables.crackers.search())
self.idx = 0
self.QorA = itertools.cycle('QA') # switch between Q and A
self.margin = 80
self.laughing = '🤣😂😹😆🙈'
self.text = 'Click To Start Telling Jokes 🎅'
def write_joke(self, text=None):
if text is None:
QorA = next(self.QorA)
text = f"{QorA}. {self.jokes[self.idx][QorA]}"
if QorA is 'A':
text += ' ' + random.choice(self.laughing) # add a random laugh emoji
# wrap lines for readability
wrapped_text = textwrap.wrap(text, int(self.canvas.get_width() - 2*self.margin)/35)))
...
Share the laughter
I used the Anvil Data Tables service to create a database, then built a UI with a DataGrid component. Now I can send the app to the family -- let's hope they come up with some better jokes than I did 🙄 .
View the source code
Want to play with the app yourself? Check out the source code:
Top comments (1)
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