Scale question type

models/answer.py

@@ -18,6 +18,7 @@ class AnswerError(Enum):
     INCORRECT_IDS = "The ids for some questions are incorrect."
     TIN_VALIDATION_FAILED = "The TIN validation process failed."
     SNILS_VALIDATION_FAILED = "The SNILS validation process failed."
+    SCALE_VALUE_NOT_IN_RANGE = "The scale value must be within the specified range."
 
 
 class BaseValue(BaseModel):
@@ -51,6 +52,15 @@ class TextValue(BaseValue):
             raise ValueError(AnswerError.SNILS_VALIDATION_FAILED.value)
 
 
+class ScaleValue(BaseValue):
+    question_type: form.QuestionType = form.QuestionType.scale
+    value: int
+
+    def validate(self, question: form.ScaleQuestion) -> None:
+        if not (question.min_value <= self.value <= question.max_value):
+            raise ValueError(AnswerError.SCALE_VALUE_NOT_IN_RANGE.value)
+
+
 class SelectorValue(BaseValue):
     question_type: form.QuestionType = form.QuestionType.selector
     values: set[int]
@@ -69,7 +79,7 @@ class SelectorValue(BaseValue):
             raise ValueError(AnswerError.TOO_MANY_SELECTED.value)
 
 
-Value: TypeAlias = SelectorValue | TextValue
+Value: TypeAlias = SelectorValue | TextValue | ScaleValue
 
 
 class AnswerData(BaseModel):

models/form.py

@@ -14,11 +14,14 @@ class FormError(Enum):
     MIN_VALUES_ERR = "min_values must be greater than or equal to 1."
     MAX_VALUES_ERR = "max_values cannot be less than min_length or greater than the number of options."
     SIMMILAR_ID_ERR = "All questions must have different id's"
+    SCALE_MIN_VALUE_ERR = "min_value must be in range from 0 to 1"
+    SCALE_MAX_VALUE_ERR = "max_value must be in range from 2 to 10"
 
 
 class QuestionType(IntEnum):
     text = 1
     selector = 2
+    scale = 3
 
 
 class TextValidator(IntEnum):
@@ -76,6 +79,28 @@ class TextQuestion(BaseQuestion):
         return v
 
 
+class ScaleQuestion(BaseQuestion):
+    question_type: QuestionType = QuestionType.scale
+    min_value: int
+    min_label: str | None = None
+    max_value: int
+    max_label: str | None = None
+
+    @field_validator("min_value")
+    @classmethod
+    def validate_min_value(cls, v, info):
+        if v not in [0, 1]:
+            raise ValueError(FormError.SCALE_MIN_VALUE_ERR.value)
+        return v
+
+    @field_validator("max_value")
+    @classmethod
+    def validate_max_value(cls, v, info):
+        if v < 2 or v > 10:
+            raise ValueError(FormError.SCALE_MAX_VALUE_ERR.value)
+        return v
+
+
 class SelectorQuestion(BaseQuestion):
     question_type: QuestionType = QuestionType.selector
     min_values: int = 1
@@ -101,7 +126,7 @@ class SelectorQuestion(BaseQuestion):
         return v
 
 
-Question: TypeAlias = SelectorQuestion | TextQuestion
+Question: TypeAlias = SelectorQuestion | TextQuestion | ScaleQuestion
 
 
 class Page(BaseModel):