class Tuxie(form.Form):
"""Tuxie says"""
text = fields.Markdown("Text")
width = fields.Expression("Tuxie width", default="400")
image = fields.Select("Image",
options=["tuxie", "jigglypuff", "pikachu"],
default="tuxie")
position = fields.Select("Bubble position",
options=["left", "right"],
default="right")
template = """
class Survey(form.Form):
"""Marked question"""
name = fields.Field("Survey name")
answer = fields.Expression("Your answer", nosave=True, editable=True)
correct_answer = fields.Expression("Correct Answer", required=True)
max_error = fields.Expression("Maximal error", default=0)
before = fields.Markdown("Before field text", default="Your answer:")
after = fields.Markdown("After field text")
question = fields.Markdown("Question")
marking_type = fields.Select(
"Marking type",
options=["Default", "Numerical", "Fraction"],
default="Default",
)
template = """
<p v-if="config.edit || payload.question">`question`</p>
<widget-settings v-if="config.edit">
<config-option name="Correct Answer">`correct_answer`</config-option>
<config-option name="Tolerated error">`max_error`</config-option>
<config-option name="Marking type">`marking_type`</config-option>
</widget-settings>
<survey
:config="config"
:name="payload.name"
:showStats="config.authState.loggedIn"
:correct="computed.correct"
:value="payload.answer">
<span v-if="config.edit || payload.before">`before`</span>
`answer`
<span v-if="config.edit || payload.after">`after`</span>
</survey>
"""
_total_marks = 1
@property
def _marks(self):
return 1 if self.correct else 0
@fields.computed("Correct", field=fields.Boolean)
def correct(self):
if self.answer is None:
return False
elif self.marking_type == "Numerical":
numbers = sympy.core.numbers
if not self.answer.func in [numbers.Float, numbers.Integer]:
return False
elif self.marking_type == "Fraction":
if not re.search(r"^[0-9\s/]*$", self._answer):
return False
return (sympy.Abs(sympy.nsimplify(self.answer - self.correct_answer))
<= self.max_error)
def validate(self):
if not self.name:
self.name = str(uuid.uuid1())
class Foo(form.Form):
field = fields.Field("Field", desc="description")
equation = fields.Equation("Equation")
real = fields.Expression("Real number")
markdown = fields.Markdown("Markdown")
matrix = fields.Matrix("Matrix")
email = fields.Email("Email")
password = fields.Password("Email")
protected = fields.Field("Protected", default="Protected", protected=True)
select = fields.Select("Select", options=["Hi", "Hello"])
@fields.constraint("Contraint", default=True)
def constraint(self):
return self.real > 0
@fields.computed("Computed")
def computed_field(self):
return self.field
class FractionOperations(form.Form):
"""Fractions"""
template = "Calculate `fraction_1` `operation` `fraction_2` `solution`"
fraction_1 = fields.Expression("fraction 1", required=True)
fraction_2 = fields.Expression("fraction 2", required=True)
operation = fields.Select("operation",
options=["+", "-", "×", "÷"],
default="+")
@fields.computed("Solution")
def solution(self):
operations = {
"+": sympy.Add,
"-": lambda a, b: a - b,
"×": sympy.Mul,
"÷": lambda a, b: a / b,
}
if self.operation:
return sympy.simplify(operations[self.operation](self.fraction_1,
self.fraction_2))
a = fields.RandomNumber("a")
b = fields.RandomNumber("b")
c = fields.RandomNumber("c")
d = fields.RandomNumber("d")
op = fields.RandomNumber("op", default=["+", "-", "×", "÷"])
def generator(self):
self.fraction_1 = self.a / self.b
self.fraction_2 = self.c / self.d
self.operation = self.op
@fields.range_constraint("non-zero numbers",
default=True,
hidden=True,
protected=True)
def non_zero_numbers(self):
self.a -= {0}
self.b -= {0}
self.c -= {0}
self.d -= {0}
class Image(form.Form):
"""Image"""
src = fields.Field("Image URL", required=True)
height = fields.Expression("Original height", default=0)
width = fields.Expression("Original width", default=0)
zoom = fields.Expression("Zoom", default=1)
position = fields.Select("Position",
options=["left", "right", "center"],
default="center")
template = """
<widget-settings v-if="config.edit">
<config-option name="Zoom">`zoom`</config-option>
<config-option name="Position">`position`</config-option>
</widget-settings>
`image`
"""
@fields.computed("Image", field=fields.Html, nohide=True)
def image(self):
style = f"float:{self.position}" if self.position != "center" else ""
return f"""
<img src="{self.src}"
width="{self.zoom * self.width}"
style="{style}"
height="{self.zoom * self.height}"/>"""
def validate(self):
if "," in self.src:
data = self.src.split(",")
image_hash = hashlib.sha1(data[1].encode("utf-8")).hexdigest()
ext = mimetypes.guess_extension(data[0][5:data[0].find(";")])
folder = os.environ.get("STORAGE", "./storage/")
filename = image_hash + ext
with open(folder + filename, "wb") as f:
image = base64.b64decode(data[1])
f.write(image)
self.src = "/storage/" + filename
if not self.width:
path = os.environ.get("STORAGE", "./storage/") + self.src[9:]
self.width, self.height = PIL.Image.open(path).size
self.zoom = 1
class CircleEquation(form.Form):
"""Circle radius and center"""
template = "Find the `info` of the circle `equation` `solution`"
equation = fields.Equation("Equation", required=True)
info = fields.Select("Info", options=["radius", "center"])
@fields.computed("Radius/Center")
def solution(self):
(a, h, k, x, y), r = (
sympy.symbols("a h k x y"),
sympy.symbols("r", positive=True),
)
formula = a * ((x - h) ** 2 + (y - k) ** 2 - r ** 2)
equation = sympy.expand(self.equation.args[0] - self.equation.args[1] - formula)
system = [equation.coeff(*t) for t in [(x, 2), (y, 2), (x, 1), (y, 1), (x, 0)]]
values = sympy.solve(system, (a, r, h, k), dict=True)
if not values:
raise ValueError(f"{repr(self.equation)} is not an equation for a circle")
values = values[0]
return values[r] if self.info == "radius" else (values[h], values[k])
class MultipleChoice(form.Form):
"""Multiple Choice"""
name = fields.Field("Survey name")
answer = fields.Select("Your answer",
nosave=True,
options=["", "A", "B", "C", "D", "E"])
correct_answer = fields.Select("Correct Answer",
options=["A", "B", "C", "D", "E"],
default="A")
question = fields.Markdown("Question")
option_a = fields.Markdown("Option A")
option_b = fields.Markdown("Option B")
option_c = fields.Markdown("Option C")
option_d = fields.Markdown("Option D")
option_e = fields.Markdown("Option E")
@property
def template(self):
buttons = []
for ltr in ["a", "b", "c", "d", "e"]:
buttons.append(f"""
<span v-if="!config.edit">
<span v-if="payload.option_{ltr}">
<b-button @click="$set(payload, 'answer', '{ltr.upper()}')"
type="is-primary"
v-if="'{ltr.upper()}' === payload.answer">
`option_{ltr}`
</b-button>
<b-button @click="$set(payload, 'answer', '{ltr.upper()}')" v-else>
`option_{ltr}`
</b-button>
</span>
</span>
<span v-else>
<b-button>`option_{ltr}`</b-button>
</span>
""")
return f"""
<p v-if="config.edit || payload.question">`question`</p>
<widget-settings v-if="config.edit">
<config-option name="Correct Answer">`correct_answer`</config-option>
</widget-settings>
<survey
:config="config"
:name="payload.name"
:showStats="config.authState.loggedIn"
:correct="computed.correct"
:max-attempts="1"
:value="payload.answer">
<span class="buttons are-large">
{"".join(buttons)}
</span>
</survey>
"""
@property
def _marks(self):
return 1 if self.correct else 0
@fields.computed("Correct", field=fields.Boolean)
def correct(self):
return self.answer == self.correct_answer
def validate(self):
if not self.name:
self.name = str(uuid.uuid1())