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feat(curriculum): add polygon area calculator lab (#59460)

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Co-authored-by: Kolade Chris <65571316+Ksound22@users.noreply.github.com>
Co-authored-by: Tom <20648924+moT01@users.noreply.github.com>
Co-authored-by: Dario-DC <105294544+Dario-DC@users.noreply.github.com>
Co-authored-by: Jessica Wilkins <67210629+jdwilkin4@users.noreply.github.com>
This commit is contained in:
Zaira
2025-05-09 17:37:44 +05:00
committed by GitHub
parent 6fc8711711
commit 7ffadd0530
5 changed files with 907 additions and 1 deletions
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client/i18n/locales/english/intro.json
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},
"lab-polygon-area-calculator": {
"title": "Build a Polygon Area Calculator",
"intro": [""]
"intro": [
"In this lab, you will use object-oriented programming to calculate the areas of different polygons like squares and rectangles."
]
},
"lecture-understanding-abstraction": {
"title": "Understanding abstraction",
client/src/pages/learn/full-stack-developer/lab-polygon-area-calculator/index.md
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---
title: Introduction to the Build a Polygon Area Calculator
block: lab-polygon-area-calculator
superBlock: full-stack-developer
---
## Introduction to the Build a Polygon Area Calculator
In this lab, you will use object-oriented programming to calculate the areas of different polygons like squares and rectangles.
curriculum/challenges/_meta/lab-polygon-area-calculator/meta.json
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{
"name": "Build a Polygon Area Calculator",
"isUpcomingChange": true,
"dashedName": "lab-polygon-area-calculator",
"superBlock": "full-stack-developer",
"challengeOrder": [{ "id": "5e444147903586ffb414c94f", "title": "Build a Polygon Area Calculator" }],
"helpCategory": "Python",
"blockLayout": "link",
"blockType": "lab"
}
curriculum/challenges/english/25-front-end-development/lab-polygon-area-calculator/5e444147903586ffb414c94f.md
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---
id: 5e444147903586ffb414c94f
title: Build a Polygon Area Calculator
challengeType: 27
dashedName: build-a-polygon-area-calculator
---
# --description--
In this project, you will use object-oriented programming to create a `Rectangle` class and a `Square` class. The `Square` class should be a subclass of `Rectangle` and inherit its methods and attributes.
**Objective:** Fulfill the user stories below and get all the tests to pass to complete the lab.
**User Stories:**
1. You should create a `Rectangle` class.
2. When a `Rectangle` object is created, it should be initialized with `width` and `height` attributes. The class should also contain the following methods:
- `set_width`: Sets the width of the rectangle.
- `set_height`: Sets the height of the rectangle.
- `get_area`: Returns area (\\( \text{width} \times \text{height} \\)).
- `get_perimeter`: Returns perimeter \\( 2(\text{width} + \text{height}) \\).
- `get_diagonal`: Returns diagonal \\( \sqrt{\text{width}^2 + \text{height}^2} \\).
- `get_picture`: Returns a string that represents the shape using lines of `*`. The number of lines should be equal to the height and the number of `*` in each line should be equal to the width. There should be a new line (`\n`) at the end of each line. If the width or height is larger than `50`, this should return the string: `Too big for picture.`.
- `get_amount_inside`: Takes another shape (square or rectangle) as an argument. Returns the number of times the passed in shape could fit inside the shape (with no rotations). For instance, a rectangle with a width of `4` and a height of `8` could fit in two squares with sides of `4`.
3. If an instance of a `Rectangle` is represented as a string, it should look like: `Rectangle(width=5, height=10)`.
4. You should create a `Square` class that subclasses `Rectangle`.
5. When a `Square` object is created, it should be initialized with a single side length. The `__init__` method should store the side length in both the `width` and `height` attributes from the `Rectangle` class.
6. The `Square` class should contain the following methods:
- `set_width`: Overrides the `set_width` method from the `Rectangle` class. It should set the width and height to the side length.
- `set_height`: Overrides the `set_height` method from the `Rectangle` class. It should set the width and height to the side length.
- `set_side`: Sets the height and width of the square equal to the side length.
7. The `Square` class should be able to access the `Rectangle` class methods.
8. If an instance of a `Square` is represented as a string, it should look like: `Square(side=9)`.
## Usage example
```py
rect = Rectangle(10, 5)
print(rect.get_area())
rect.set_height(3)
print(rect.get_perimeter())
print(rect)
print(rect.get_picture())
sq = Square(9)
print(sq.get_area())
sq.set_side(4)
print(sq.get_diagonal())
print(sq)
print(sq.get_picture())
rect.set_height(8)
rect.set_width(16)
print(rect.get_amount_inside(sq))
```
That code should return:
```bash
50
26
Rectangle(width=10, height=3)
**********
**********
**********
81
5.656854249492381
Square(side=4)
****
****
****
****
8
```
# --hints--
You should have a `Rectangle` class.
```js
({ test: () => assert(runPython(`_Node(_code).has_class("Rectangle")`)) })
```
You should have a `Square` class.
```js
({ test: () => assert(runPython(`_Node(_code).has_class("Square")`)) })
```
The `Square` class should be a subclass of the `Rectangle` class.
```js
({
test: () => {
pyodide.FS.writeFile('/home/pyodide/shape_calculator.py', code);
pyodide.FS.writeFile('/home/pyodide/test_module.py',`
import unittest
import shape_calculator
from importlib import reload
reload(shape_calculator)
class UnitTests(unittest.TestCase):
maxDiff = None
def test_subclass(self):
actual = issubclass(shape_calculator.Square, shape_calculator.Rectangle)
expected = True
self.assertEqual(actual, expected, 'Expected Square class to be a subclass of the Rectangle class.')
`);
const testCode = `
from unittest import main
from importlib import reload
import test_module
reload(test_module)
t = main(module='test_module', exit=False)
t.result.wasSuccessful()
`;
const out = runPython(testCode);
assert(out);
}
})
```
The `Square` class should be a distinct class from the `Rectangle` class.
```js
({
test: () => {
pyodide.FS.writeFile('/home/pyodide/shape_calculator.py', code);
pyodide.FS.writeFile('/home/pyodide/test_module.py',`
import unittest
import shape_calculator
from importlib import reload
reload(shape_calculator)
class UnitTests(unittest.TestCase):
maxDiff = None
def test_distinct_classes(self):
actual = shape_calculator.Square is not shape_calculator.Rectangle
expected = True
self.assertEqual(actual, expected, 'Expected Square class to be a distinct class from the Rectangle class.')
`);
const testCode = `
from unittest import main
from importlib import reload
import test_module
reload(test_module)
t = main(module='test_module', exit=False)
t.result.wasSuccessful()
`;
const out = runPython(testCode);
assert(out);
}
})
```
A square object should be an instance of the `Square` class and the `Rectangle` class.
```js
({
test: () => {
pyodide.FS.writeFile('/home/pyodide/shape_calculator.py', code);
pyodide.FS.writeFile('/home/pyodide/test_module.py',`
import unittest
import shape_calculator
from importlib import reload
reload(shape_calculator)
class UnitTests(unittest.TestCase):
maxDiff = None
def setUp(self):
self.sq = shape_calculator.Square(5)
def test_square_is_square_and_rectangle(self):
actual = isinstance(self.sq, shape_calculator.Square) and isinstance(self.sq, shape_calculator.Rectangle)
expected = True
self.assertEqual(actual, expected, 'Expected square object to be an instance of the Square class and the Rectangle class.')
`);
const testCode = `
from unittest import main
from importlib import reload
import test_module
reload(test_module)
t = main(module='test_module', exit=False)
t.result.wasSuccessful()
`;
const out = runPython(testCode);
assert(out);
}
})
```
The string representation of `Rectangle(3, 6)` should be `Rectangle(width=3, height=6)`.
```js
({
test: () => {
pyodide.FS.writeFile('/home/pyodide/shape_calculator.py', code);
pyodide.FS.writeFile('/home/pyodide/test_module.py',`
import unittest
import shape_calculator
from importlib import reload
reload(shape_calculator)
class UnitTests(unittest.TestCase):
maxDiff = None
def setUp(self):
self.rect = shape_calculator.Rectangle(3, 6)
def test_rectangle_string(self):
actual = str(self.rect)
expected = "Rectangle(width=3, height=6)"
self.assertEqual(actual, expected, 'Expected string representation of rectangle to be "Rectangle(width=3, height=6)"')
`);
const testCode = `
from unittest import main
from importlib import reload
import test_module
reload(test_module)
t = main(module='test_module', exit=False)
t.result.wasSuccessful()
`;
const out = runPython(testCode);
assert(out);
}
})
```
The string representation of `Square(5)` should be `Square(side=5)`.
```js
({
test: () => {
pyodide.FS.writeFile('/home/pyodide/shape_calculator.py', code);
pyodide.FS.writeFile('/home/pyodide/test_module.py',`
import unittest
import shape_calculator
from importlib import reload
reload(shape_calculator)
class UnitTests(unittest.TestCase):
maxDiff = None
def setUp(self):
self.sq = shape_calculator.Square(5)
def test_square_string(self):
actual = str(self.sq)
expected = "Square(side=5)"
self.assertEqual(actual, expected, 'Expected string representation of square to be "Square(side=5)"')
`);
const testCode = `
from unittest import main
from importlib import reload
import test_module
reload(test_module)
t = main(module='test_module', exit=False)
t.result.wasSuccessful()
`;
const out = runPython(testCode);
assert(out);
}
})
```
`Rectangle(3, 6).get_area()` should return `18`.
```js
({
test: () => {
pyodide.FS.writeFile('/home/pyodide/shape_calculator.py', code);
pyodide.FS.writeFile('/home/pyodide/test_module.py',`
import unittest
import shape_calculator
from importlib import reload
reload(shape_calculator)
class UnitTests(unittest.TestCase):
maxDiff = None
def setUp(self):
self.rect = shape_calculator.Rectangle(3, 6)
def test_area(self):
actual = self.rect.get_area()
expected = 18
self.assertEqual(actual, expected, 'Expected area of rectangle to be 18')
`);
const testCode = `
from unittest import main
from importlib import reload
import test_module
reload(test_module)
t = main(module='test_module', exit=False)
t.result.wasSuccessful()
`;
const out = runPython(testCode);
assert(out);
}
})
```
`Square(5).get_area()` should return `25`.
```js
({
test: () => {
pyodide.FS.writeFile('/home/pyodide/shape_calculator.py', code);
pyodide.FS.writeFile('/home/pyodide/test_module.py',`
import unittest
import shape_calculator
from importlib import reload
reload(shape_calculator)
class UnitTests(unittest.TestCase):
maxDiff = None
def setUp(self):
self.sq = shape_calculator.Square(5)
def test_area(self):
actual = self.sq.get_area()
expected = 25
self.assertEqual(actual, expected, 'Expected area of square to be 25')
`);
const testCode = `
from unittest import main
from importlib import reload
import test_module
reload(test_module)
t = main(module='test_module', exit=False)
t.result.wasSuccessful()
`;
const out = runPython(testCode);
assert(out);
}
})
```
`Rectangle(3, 6).get_perimeter()` should return `18`.
```js
({
test: () => {
pyodide.FS.writeFile('/home/pyodide/shape_calculator.py', code);
pyodide.FS.writeFile('/home/pyodide/test_module.py',`
import unittest
import shape_calculator
from importlib import reload
reload(shape_calculator)
class UnitTests(unittest.TestCase):
maxDiff = None
def setUp(self):
self.rect = shape_calculator.Rectangle(3, 6)
def test_perimeter(self):
actual = self.rect.get_perimeter()
expected = 18
self.assertEqual(actual, expected, 'Expected perimeter of rectangle to be 18')
`);
const testCode = `
from unittest import main
from importlib import reload
import test_module
reload(test_module)
t = main(module='test_module', exit=False)
t.result.wasSuccessful()
`;
const out = runPython(testCode);
assert(out);
}
})
```
`Square(5).get_perimeter()` should return `20`.
```js
({
test: () => {
pyodide.FS.writeFile('/home/pyodide/shape_calculator.py', code);
pyodide.FS.writeFile('/home/pyodide/test_module.py',`
import unittest
import shape_calculator
from importlib import reload
reload(shape_calculator)
class UnitTests(unittest.TestCase):
maxDiff = None
def setUp(self):
self.sq = shape_calculator.Square(5)
def test_perimeter(self):
actual = self.sq.get_perimeter()
expected = 20
self.assertEqual(actual, expected, 'Expected perimeter of square to be 20')
`);
const testCode = `
from unittest import main
from importlib import reload
import test_module
reload(test_module)
t = main(module='test_module', exit=False)
t.result.wasSuccessful()
`;
const out = runPython(testCode);
assert(out);
}
})
```
`Rectangle(3, 6).get_diagonal()` should return `6.708203932499369`.
```js
({
test: () => {
pyodide.FS.writeFile('/home/pyodide/shape_calculator.py', code);
pyodide.FS.writeFile('/home/pyodide/test_module.py',`
import unittest
import shape_calculator
from importlib import reload
reload(shape_calculator)
class UnitTests(unittest.TestCase):
maxDiff = None
def setUp(self):
self.rect = shape_calculator.Rectangle(3, 6)
def test_diagonal(self):
actual = self.rect.get_diagonal()
expected = 6.708203932499369
self.assertEqual(actual, expected, 'Expected diagonal of rectangle to be 6.708203932499369')
`);
const testCode = `
from unittest import main
from importlib import reload
import test_module
reload(test_module)
t = main(module='test_module', exit=False)
t.result.wasSuccessful()
`;
const out = runPython(testCode);
assert(out);
}
})
```
`Square(5).get_diagonal()` should return `7.0710678118654755`.
```js
({
test: () => {
pyodide.FS.writeFile('/home/pyodide/shape_calculator.py', code);
pyodide.FS.writeFile('/home/pyodide/test_module.py',`
import unittest
import shape_calculator
from importlib import reload
reload(shape_calculator)
class UnitTests(unittest.TestCase):
maxDiff = None
def setUp(self):
self.sq = shape_calculator.Square(5)
def test_diagonal(self):
actual = self.sq.get_diagonal()
expected = 7.0710678118654755
self.assertEqual(actual, expected, 'Expected diagonal of square to be 7.0710678118654755')
`);
const testCode = `
from unittest import main
from importlib import reload
import test_module
reload(test_module)
t = main(module='test_module', exit=False)
t.result.wasSuccessful()
`;
const out = runPython(testCode);
assert(out);
}
})
```
An instance of the `Rectangle` class should have a different string representation after setting new values.
```js
({
test: () => {
pyodide.FS.writeFile('/home/pyodide/shape_calculator.py', code);
pyodide.FS.writeFile('/home/pyodide/test_module.py',`
import unittest
import shape_calculator
from importlib import reload
reload(shape_calculator)
class UnitTests(unittest.TestCase):
maxDiff = None
def setUp(self):
self.rect = shape_calculator.Rectangle(3, 6)
def test_set_attributes(self):
self.rect.set_width(7)
self.rect.set_height(8)
actual = str(self.rect)
expected = "Rectangle(width=7, height=8)"
self.assertEqual(actual, expected, 'Expected string representation of rectangle after setting new values to be "Rectangle(width=7, height=8)"')
`);
const testCode = `
from unittest import main
from importlib import reload
import test_module
reload(test_module)
t = main(module='test_module', exit=False)
t.result.wasSuccessful()
`;
const out = runPython(testCode);
assert(out);
}
})
```
An instance of the `Square` class should have a different string representation after setting new values by using `.set_side()`.
```js
({
test: () => {
pyodide.FS.writeFile('/home/pyodide/shape_calculator.py', code);
pyodide.FS.writeFile('/home/pyodide/test_module.py',`
import unittest
import shape_calculator
from importlib import reload
reload(shape_calculator)
class UnitTests(unittest.TestCase):
maxDiff = None
def setUp(self):
self.sq = shape_calculator.Square(5)
def test_set_attributes(self):
self.sq.set_side(2)
actual = str(self.sq)
expected = "Square(side=2)"
self.assertEqual(actual, expected, 'Expected string representation of square after setting new values to be "Square(side=2)"')
`);
const testCode = `
from unittest import main
from importlib import reload
import test_module
reload(test_module)
t = main(module='test_module', exit=False)
t.result.wasSuccessful()
`;
const out = runPython(testCode);
assert(out);
}
})
```
An instance of the `Square` class should have a different string representation after setting new values by using `.set_width()` or `set_height()`.
```js
({
test: () => {
pyodide.FS.writeFile('/home/pyodide/shape_calculator.py', code);
pyodide.FS.writeFile('/home/pyodide/test_module.py',`
import unittest
import shape_calculator
from importlib import reload
reload(shape_calculator)
class UnitTests(unittest.TestCase):
maxDiff = None
def setUp(self):
self.sq = shape_calculator.Square(5)
def test_set_attributes(self):
self.sq.set_height(2)
actual = str(self.sq)
expected = "Square(side=2)"
self.assertEqual(actual, expected, 'Expected string representation of square after setting new values to be "Square(side=2)"')
self.sq.set_width(4)
actual = str(self.sq)
expected = "Square(side=4)"
self.assertEqual(actual, expected, 'Expected string representation of square after setting width to be "Square(side=4)"')
`);
const testCode = `
from unittest import main
from importlib import reload
import test_module
reload(test_module)
t = main(module='test_module', exit=False)
t.result.wasSuccessful()
`;
const out = runPython(testCode);
assert(out);
}
})
```
The `.get_picture()` method should return a different string representation of a `Rectangle` instance.
```js
({
test: () => {
pyodide.FS.writeFile('/home/pyodide/shape_calculator.py', code);
pyodide.FS.writeFile('/home/pyodide/test_module.py',`
import unittest
import shape_calculator
from importlib import reload
reload(shape_calculator)
class UnitTests(unittest.TestCase):
maxDiff = None
def setUp(self):
self.rect = shape_calculator.Rectangle(3, 6)
def test_rectangle_picture(self):
self.rect.set_width(7)
self.rect.set_height(3)
actual = self.rect.get_picture()
expected = "*******\\n*******\\n*******\\n"
self.assertEqual(actual, expected, 'Expected rectangle picture to be different.')
`);
const testCode = `
from unittest import main
from importlib import reload
import test_module
reload(test_module)
t = main(module='test_module', exit=False)
t.result.wasSuccessful()
`;
const out = runPython(testCode);
assert(out);
}
})
```
The `.get_picture()` method should return a different string representation of a `Square` instance.
```js
({
test: () => {
pyodide.FS.writeFile('/home/pyodide/shape_calculator.py', code);
pyodide.FS.writeFile('/home/pyodide/test_module.py',`
import unittest
import shape_calculator
from importlib import reload
reload(shape_calculator)
class UnitTests(unittest.TestCase):
maxDiff = None
def setUp(self):
self.sq = shape_calculator.Square(5)
def test_square_picture(self):
self.sq.set_side(2)
actual = self.sq.get_picture()
expected = "**\\n**\\n"
self.assertEqual(actual, expected, 'Expected square picture to be different.')
`);
const testCode = `
from unittest import main
from importlib import reload
import test_module
reload(test_module)
t = main(module='test_module', exit=False)
t.result.wasSuccessful()
`;
const out = runPython(testCode);
assert(out);
}
})
```
The `.get_picture()` method should return the string `Too big for picture.` if the `width` or `height` attributes are larger than `50`.
```js
({
test: () => {
pyodide.FS.writeFile('/home/pyodide/shape_calculator.py', code);
pyodide.FS.writeFile('/home/pyodide/test_module.py',`
import unittest
import shape_calculator
from importlib import reload
reload(shape_calculator)
class UnitTests(unittest.TestCase):
maxDiff = None
def setUp(self):
self.rect = shape_calculator.Rectangle(3, 6)
def test_big_picture(self):
self.rect.set_width(51)
self.rect.set_height(3)
actual = self.rect.get_picture()
expected = "Too big for picture."
self.assertEqual(actual, expected, 'Expected message: "Too big for picture."')
`);
const testCode = `
from unittest import main
from importlib import reload
import test_module
reload(test_module)
t = main(module='test_module', exit=False)
t.result.wasSuccessful()
`;
const out = runPython(testCode);
assert(out);
}
})
```
`Rectangle(15,10).get_amount_inside(Square(5))` should return `6`.
```js
({
test: () => {
pyodide.FS.writeFile('/home/pyodide/shape_calculator.py', code);
pyodide.FS.writeFile('/home/pyodide/test_module.py',`
import unittest
import shape_calculator
from importlib import reload
reload(shape_calculator)
class UnitTests(unittest.TestCase):
maxDiff = None
def setUp(self):
self.rect = shape_calculator.Rectangle(3, 6)
self.sq = shape_calculator.Square(5)
def test_get_amount_inside(self):
self.rect.set_height(10)
self.rect.set_width(15)
actual = self.rect.get_amount_inside(self.sq)
expected = 6
self.assertEqual(actual, expected, 'Expected "get_amount_inside" to return 6.')
`);
const testCode = `
from unittest import main
from importlib import reload
import test_module
reload(test_module)
t = main(module='test_module', exit=False)
t.result.wasSuccessful()
`;
const out = runPython(testCode);
assert(out);
}
})
```
`Rectangle(4,8).get_amount_inside(Rectangle(3, 6))` should return `1`.
```js
({
test: () => {
pyodide.FS.writeFile('/home/pyodide/shape_calculator.py', code);
pyodide.FS.writeFile('/home/pyodide/test_module.py',`
import unittest
import shape_calculator
from importlib import reload
reload(shape_calculator)
class UnitTests(unittest.TestCase):
maxDiff = None
def setUp(self):
self.rect = shape_calculator.Rectangle(3, 6)
def test_get_amount_inside_two_rectangles(self):
rect2 = shape_calculator.Rectangle(4, 8)
actual = rect2.get_amount_inside(self.rect)
expected = 1
self.assertEqual(actual, expected, 'Expected "get_amount_inside" to return 1.')
`);
const testCode = `
from unittest import main
from importlib import reload
import test_module
reload(test_module)
t = main(module='test_module', exit=False)
t.result.wasSuccessful()
`;
const out = runPython(testCode);
assert(out);
}
})
```
`Rectangle(2,3).get_amount_inside(Rectangle(3, 6))` should return `0`.
```js
({
test: () => {
pyodide.FS.writeFile('/home/pyodide/shape_calculator.py', code);
pyodide.FS.writeFile('/home/pyodide/test_module.py',`
import unittest
import shape_calculator
from importlib import reload
reload(shape_calculator)
class UnitTests(unittest.TestCase):
maxDiff = None
def setUp(self):
self.rect = shape_calculator.Rectangle(3, 6)
def test_get_amount_inside_none(self):
rect2 = shape_calculator.Rectangle(2, 3)
actual = rect2.get_amount_inside(self.rect)
expected = 0
self.assertEqual(actual, expected, 'Expected "get_amount_inside" to return 0.')
`);
const testCode = `
from unittest import main
from importlib import reload
import test_module
reload(test_module)
t = main(module='test_module', exit=False)
t.result.wasSuccessful()
`;
const out = runPython(testCode);
assert(out);
}
})
```
# --seed--
## --seed-contents--
```py
```
# --solutions--
```py
class Rectangle:
def __init__(self, width, height):
self.width = width
self.height = height
def __str__(self):
return f'Rectangle(width={self.width}, height={self.height})'
def set_width(self, width):
self.width = width
def set_height(self, height):
self.height = height
def get_area(self):
area = self.width * self.height
return area
def get_perimeter(self):
perimeter = self.width * 2 + self.height * 2
return perimeter
def get_diagonal(self):
diagonal = (self.width ** 2 + self.height ** 2) ** 0.5
return diagonal
def get_picture(self):
if self.width < 50 and self.height < 50:
picture = f'{"*"*self.width}\n'*self.height
return picture
else:
return 'Too big for picture.'
def get_amount_inside(self, polygon):
h_number = self.height // polygon.height
w_number = self.width // polygon.width
repetition = h_number * w_number
return repetition
class Square(Rectangle):
def __init__(self, side):
self.width = side
self.height = side
def __str__(self):
return f'Square(side={self.width})'
def set_width(self, side):
self.width = side
self.height = side
def set_height(self, side):
self.height = side
self.width = side
def set_side(self,side):
self.width = side
self.height = side
```
curriculum/test/utils/mongo-ids.js
+3
View File
@@ -1516,6 +1516,9 @@ const duplicatedProjectIds = [
// Budget App
'5e44413e903586ffb414c94e',
// Polygon area calculator
'5e444147903586ffb414c94f',
/*** Back End JavaScript ***/
/*** Legacy Only ***/