prompt: We are currently solving the following issue within our repository. Here is the issue text:
  --- BEGIN ISSUE ---
  Disallow samples without intent or entities
  Disallow samples creation without an intent or one entity at least.
  
  --- END ISSUE ---
  
  Below are some code segments, each from a relevant file. One or more of these files may contain bugs.
  --- BEGIN FILES ---
  Path: `bothub/api/validators.py`
  Content:
  ```
  1 from django.utils.translation import gettext as _
  2 from rest_framework.exceptions import PermissionDenied
  3 from rest_framework.exceptions import ValidationError
  4 
  5 from bothub.common.models import RepositoryTranslatedExample
  6 
  7 
  8 class CanContributeInRepositoryValidator(object):
  9     def __call__(self, value):
  10         user_authorization = value.get_user_authorization(
  11             self.request.user)
  12         if not user_authorization.can_contribute:
  13             raise PermissionDenied(
  14                 _('You can\'t contribute in this repository'))
  15 
  16     def set_context(self, serializer):
  17         self.request = serializer.context.get('request')
  18 
  19 
  20 class CanContributeInRepositoryExampleValidator(object):
  21     def __call__(self, value):
  22         repository = value.repository_update.repository
  23         user_authorization = repository.get_user_authorization(
  24             self.request.user)
  25         if not user_authorization.can_contribute:
  26             raise PermissionDenied(
  27                 _('You can\'t contribute in this repository'))
  28 
  29     def set_context(self, serializer):
  30         self.request = serializer.context.get('request')
  31 
  32 
  33 class CanContributeInRepositoryTranslatedExampleValidator(object):
  34     def __call__(self, value):
  35         repository = value.original_example.repository_update.repository
  36         user_authorization = repository.get_user_authorization(
  37             self.request.user)
  38         if not user_authorization.can_contribute:
  39             raise PermissionDenied(
  40                 _('You can\'t contribute in this repository'))
  41 
  42     def set_context(self, serializer):
  43         self.request = serializer.context.get('request')
  44 
  45 
  46 class TranslatedExampleEntitiesValidator(object):
  47     def __call__(self, attrs):
  48         original_example = attrs.get('original_example')
  49         entities_valid = RepositoryTranslatedExample.same_entities_validator(
  50             list(map(lambda x: dict(x), attrs.get('entities'))),
  51             list(map(lambda x: x.to_dict, original_example.entities.all())))
  52         if not entities_valid:
  53             raise ValidationError({'entities': _('Invalid entities')})
  54 
  55 
  56 class TranslatedExampleLanguageValidator(object):
  57     def __call__(self, attrs):
  58         original_example = attrs.get('original_example')
  59         language = attrs.get('language')
  60         if original_example.repository_update.language == language:
  61             raise ValidationError({'language': _(
  62                 'Can\'t translate to the same language')})
  63
  ```
  
  Path: `bothub/api/serializers/example.py`
  Content:
  ```
  1 from rest_framework import serializers
  2 
  3 from django.utils.translation import gettext as _
  4 
  5 from bothub.common.models import Repository
  6 from bothub.common.models import RepositoryExample
  7 from bothub.common.models import RepositoryExampleEntity
  8 
  9 from ..fields import EntityText
  10 from ..validators import CanContributeInRepositoryExampleValidator
  11 from ..validators import CanContributeInRepositoryValidator
  12 from .translate import RepositoryTranslatedExampleSerializer
  13 
  14 
  15 class RepositoryExampleEntitySerializer(serializers.ModelSerializer):
  16     class Meta:
  17         model = RepositoryExampleEntity
  18         fields = [
  19             'id',
  20             'repository_example',
  21             'start',
  22             'end',
  23             'entity',
  24             'created_at',
  25             'value',
  26         ]
  27 
  28     repository_example = serializers.PrimaryKeyRelatedField(
  29         queryset=RepositoryExample.objects,
  30         validators=[
  31             CanContributeInRepositoryExampleValidator(),
  32         ],
  33         help_text=_('Example\'s ID'))
  34     value = serializers.SerializerMethodField()
  35 
  36     def get_value(self, obj):
  37         return obj.value
  38 
  39 
  40 class NewRepositoryExampleEntitySerializer(serializers.ModelSerializer):
  41     class Meta:
  42         model = RepositoryExampleEntity
  43         fields = [
  44             'repository_example',
  45             'start',
  46             'end',
  47             'entity',
  48         ]
  49 
  50 
  51 class RepositoryExampleSerializer(serializers.ModelSerializer):
  52     class Meta:
  53         model = RepositoryExample
  54         fields = [
  55             'id',
  56             'repository_update',
  57             'deleted_in',
  58             'text',
  59             'intent',
  60             'language',
  61             'created_at',
  62             'entities',
  63             'translations',
  64         ]
  65         read_only_fields = [
  66             'repository_update',
  67             'deleted_in',
  68         ]
  69 
  70     entities = RepositoryExampleEntitySerializer(
  71         many=True,
  72         read_only=True)
  73     translations = RepositoryTranslatedExampleSerializer(
  74         many=True,
  75         read_only=True)
  76     language = serializers.SerializerMethodField()
  77 
  78     def get_language(self, obj):
  79         return obj.language
  80 
  81 
  82 class NewRepositoryExampleSerializer(serializers.ModelSerializer):
  83     class Meta:
  84         model = RepositoryExample
  85         fields = [
  86             'id',
  87             'repository',
  88             'repository_update',
  89             'text',
  90             'entities',
  91             'intent',
  92         ]
  93 
  94     id = serializers.PrimaryKeyRelatedField(
  95         read_only=True,
  96         style={'show': False})
  97     text = EntityText(style={'entities_field': 'entities'})
  98     repository = serializers.PrimaryKeyRelatedField(
  99         queryset=Repository.objects,
  100         validators=[
  101             CanContributeInRepositoryValidator(),
  102         ],
  103         source='repository_update',
  104         style={'show': False})
  105     repository_update = serializers.PrimaryKeyRelatedField(
  106         read_only=True,
  107         style={'show': False})
  108     entities = NewRepositoryExampleEntitySerializer(
  109         many=True,
  110         style={'text_field': 'text'})
  111 
  112     def validate_repository(self, repository):
  113         return repository.current_update()
  114 
  115     def create(self, validated_data):
  116         entities_data = validated_data.pop('entities')
  117         example = self.Meta.model.objects.create(**validated_data)
  118         for entity_data in entities_data:
  119             RepositoryExampleEntity.objects.create(
  120                 repository_example=example,
  121                 **entity_data)
  122         return example
  123
  ```
  --- END FILES ---
  
  Please first localize the bug based on the issue statement, and then generate a patch according to the `git diff` format fenced by three backticks.
  
  Here is an example:
  
  ```diff
  diff --git a/examples/server_async.py b/examples/server_async.py
  --- a/examples/server_async.py
  +++ b/examples/server_async.py
  @@ -313,4 +313,4 @@
   
   
   if __name__ == "__main__":
  -    asyncio.run(run_async_server("."), debug=True)
  +    asyncio.run(run_async_server(), debug=True)
  diff --git a/examples/server_sync.py b/examples/server_sync.py
  --- a/examples/server_sync.py
  +++ b/examples/server_sync.py
  @@ -313,5 +313,5 @@
   
   
   if __name__ == "__main__":
  -    server = run_sync_server(".")
  +    server = run_sync_server()
       server.shutdown()
  
  ```
  
golden_diff: diff --git a/bothub/api/serializers/example.py b/bothub/api/serializers/example.py
  --- a/bothub/api/serializers/example.py
  +++ b/bothub/api/serializers/example.py
  @@ -9,6 +9,7 @@
   from ..fields import EntityText
   from ..validators import CanContributeInRepositoryExampleValidator
   from ..validators import CanContributeInRepositoryValidator
  +from ..validators import ExampleWithIntentOrEntityValidator
   from .translate import RepositoryTranslatedExampleSerializer
   
   
  @@ -109,6 +110,10 @@
           many=True,
           style={'text_field': 'text'})
   
  +    def __init__(self, *args, **kwargs):
  +        super().__init__(*args, **kwargs)
  +        self.validators.append(ExampleWithIntentOrEntityValidator())
  +
       def validate_repository(self, repository):
           return repository.current_update()
   
  diff --git a/bothub/api/validators.py b/bothub/api/validators.py
  --- a/bothub/api/validators.py
  +++ b/bothub/api/validators.py
  @@ -60,3 +60,12 @@
           if original_example.repository_update.language == language:
               raise ValidationError({'language': _(
                   'Can\'t translate to the same language')})
  +
  +
  +class ExampleWithIntentOrEntityValidator(object):
  +    def __call__(self, attrs):
  +        intent = attrs.get('intent')
  +        entities = attrs.get('entities')
  +
  +        if not intent and not entities:
  +            raise ValidationError(_('Define a intent or one entity'))
  
verification_info: {"golden_diff": "diff --git a/bothub/api/serializers/example.py b/bothub/api/serializers/example.py\n--- a/bothub/api/serializers/example.py\n+++ b/bothub/api/serializers/example.py\n@@ -9,6 +9,7 @@\n from ..fields import EntityText\n from ..validators import CanContributeInRepositoryExampleValidator\n from ..validators import CanContributeInRepositoryValidator\n+from ..validators import ExampleWithIntentOrEntityValidator\n from .translate import RepositoryTranslatedExampleSerializer\n \n \n@@ -109,6 +110,10 @@\n         many=True,\n         style={'text_field': 'text'})\n \n+    def __init__(self, *args, **kwargs):\n+        super().__init__(*args, **kwargs)\n+        self.validators.append(ExampleWithIntentOrEntityValidator())\n+\n     def validate_repository(self, repository):\n         return repository.current_update()\n \ndiff --git a/bothub/api/validators.py b/bothub/api/validators.py\n--- a/bothub/api/validators.py\n+++ b/bothub/api/validators.py\n@@ -60,3 +60,12 @@\n         if original_example.repository_update.language == language:\n             raise ValidationError({'language': _(\n                 'Can\\'t translate to the same language')})\n+\n+\n+class ExampleWithIntentOrEntityValidator(object):\n+    def __call__(self, attrs):\n+        intent = attrs.get('intent')\n+        entities = attrs.get('entities')\n+\n+        if not intent and not entities:\n+            raise ValidationError(_('Define a intent or one entity'))\n", "issue": "Disallow samples without intent or entities\nDisallow samples creation without an intent or one entity at least.\n", "before_files": [{"content": "from django.utils.translation import gettext as _\nfrom rest_framework.exceptions import PermissionDenied\nfrom rest_framework.exceptions import ValidationError\n\nfrom bothub.common.models import RepositoryTranslatedExample\n\n\nclass CanContributeInRepositoryValidator(object):\n    def __call__(self, value):\n        user_authorization = value.get_user_authorization(\n            self.request.user)\n        if not user_authorization.can_contribute:\n            raise PermissionDenied(\n                _('You can\\'t contribute in this repository'))\n\n    def set_context(self, serializer):\n        self.request = serializer.context.get('request')\n\n\nclass CanContributeInRepositoryExampleValidator(object):\n    def __call__(self, value):\n        repository = value.repository_update.repository\n        user_authorization = repository.get_user_authorization(\n            self.request.user)\n        if not user_authorization.can_contribute:\n            raise PermissionDenied(\n                _('You can\\'t contribute in this repository'))\n\n    def set_context(self, serializer):\n        self.request = serializer.context.get('request')\n\n\nclass CanContributeInRepositoryTranslatedExampleValidator(object):\n    def __call__(self, value):\n        repository = value.original_example.repository_update.repository\n        user_authorization = repository.get_user_authorization(\n            self.request.user)\n        if not user_authorization.can_contribute:\n            raise PermissionDenied(\n                _('You can\\'t contribute in this repository'))\n\n    def set_context(self, serializer):\n        self.request = serializer.context.get('request')\n\n\nclass TranslatedExampleEntitiesValidator(object):\n    def __call__(self, attrs):\n        original_example = attrs.get('original_example')\n        entities_valid = RepositoryTranslatedExample.same_entities_validator(\n            list(map(lambda x: dict(x), attrs.get('entities'))),\n            list(map(lambda x: x.to_dict, original_example.entities.all())))\n        if not entities_valid:\n            raise ValidationError({'entities': _('Invalid entities')})\n\n\nclass TranslatedExampleLanguageValidator(object):\n    def __call__(self, attrs):\n        original_example = attrs.get('original_example')\n        language = attrs.get('language')\n        if original_example.repository_update.language == language:\n            raise ValidationError({'language': _(\n                'Can\\'t translate to the same language')})\n", "path": "bothub/api/validators.py"}, {"content": "from rest_framework import serializers\n\nfrom django.utils.translation import gettext as _\n\nfrom bothub.common.models import Repository\nfrom bothub.common.models import RepositoryExample\nfrom bothub.common.models import RepositoryExampleEntity\n\nfrom ..fields import EntityText\nfrom ..validators import CanContributeInRepositoryExampleValidator\nfrom ..validators import CanContributeInRepositoryValidator\nfrom .translate import RepositoryTranslatedExampleSerializer\n\n\nclass RepositoryExampleEntitySerializer(serializers.ModelSerializer):\n    class Meta:\n        model = RepositoryExampleEntity\n        fields = [\n            'id',\n            'repository_example',\n            'start',\n            'end',\n            'entity',\n            'created_at',\n            'value',\n        ]\n\n    repository_example = serializers.PrimaryKeyRelatedField(\n        queryset=RepositoryExample.objects,\n        validators=[\n            CanContributeInRepositoryExampleValidator(),\n        ],\n        help_text=_('Example\\'s ID'))\n    value = serializers.SerializerMethodField()\n\n    def get_value(self, obj):\n        return obj.value\n\n\nclass NewRepositoryExampleEntitySerializer(serializers.ModelSerializer):\n    class Meta:\n        model = RepositoryExampleEntity\n        fields = [\n            'repository_example',\n            'start',\n            'end',\n            'entity',\n        ]\n\n\nclass RepositoryExampleSerializer(serializers.ModelSerializer):\n    class Meta:\n        model = RepositoryExample\n        fields = [\n            'id',\n            'repository_update',\n            'deleted_in',\n            'text',\n            'intent',\n            'language',\n            'created_at',\n            'entities',\n            'translations',\n        ]\n        read_only_fields = [\n            'repository_update',\n            'deleted_in',\n        ]\n\n    entities = RepositoryExampleEntitySerializer(\n        many=True,\n        read_only=True)\n    translations = RepositoryTranslatedExampleSerializer(\n        many=True,\n        read_only=True)\n    language = serializers.SerializerMethodField()\n\n    def get_language(self, obj):\n        return obj.language\n\n\nclass NewRepositoryExampleSerializer(serializers.ModelSerializer):\n    class Meta:\n        model = RepositoryExample\n        fields = [\n            'id',\n            'repository',\n            'repository_update',\n            'text',\n            'entities',\n            'intent',\n        ]\n\n    id = serializers.PrimaryKeyRelatedField(\n        read_only=True,\n        style={'show': False})\n    text = EntityText(style={'entities_field': 'entities'})\n    repository = serializers.PrimaryKeyRelatedField(\n        queryset=Repository.objects,\n        validators=[\n            CanContributeInRepositoryValidator(),\n        ],\n        source='repository_update',\n        style={'show': False})\n    repository_update = serializers.PrimaryKeyRelatedField(\n        read_only=True,\n        style={'show': False})\n    entities = NewRepositoryExampleEntitySerializer(\n        many=True,\n        style={'text_field': 'text'})\n\n    def validate_repository(self, repository):\n        return repository.current_update()\n\n    def create(self, validated_data):\n        entities_data = validated_data.pop('entities')\n        example = self.Meta.model.objects.create(**validated_data)\n        for entity_data in entities_data:\n            RepositoryExampleEntity.objects.create(\n                repository_example=example,\n                **entity_data)\n        return example\n", "path": "bothub/api/serializers/example.py"}], "after_files": [{"content": "from django.utils.translation import gettext as _\nfrom rest_framework.exceptions import PermissionDenied\nfrom rest_framework.exceptions import ValidationError\n\nfrom bothub.common.models import RepositoryTranslatedExample\n\n\nclass CanContributeInRepositoryValidator(object):\n    def __call__(self, value):\n        user_authorization = value.get_user_authorization(\n            self.request.user)\n        if not user_authorization.can_contribute:\n            raise PermissionDenied(\n                _('You can\\'t contribute in this repository'))\n\n    def set_context(self, serializer):\n        self.request = serializer.context.get('request')\n\n\nclass CanContributeInRepositoryExampleValidator(object):\n    def __call__(self, value):\n        repository = value.repository_update.repository\n        user_authorization = repository.get_user_authorization(\n            self.request.user)\n        if not user_authorization.can_contribute:\n            raise PermissionDenied(\n                _('You can\\'t contribute in this repository'))\n\n    def set_context(self, serializer):\n        self.request = serializer.context.get('request')\n\n\nclass CanContributeInRepositoryTranslatedExampleValidator(object):\n    def __call__(self, value):\n        repository = value.original_example.repository_update.repository\n        user_authorization = repository.get_user_authorization(\n            self.request.user)\n        if not user_authorization.can_contribute:\n            raise PermissionDenied(\n                _('You can\\'t contribute in this repository'))\n\n    def set_context(self, serializer):\n        self.request = serializer.context.get('request')\n\n\nclass TranslatedExampleEntitiesValidator(object):\n    def __call__(self, attrs):\n        original_example = attrs.get('original_example')\n        entities_valid = RepositoryTranslatedExample.same_entities_validator(\n            list(map(lambda x: dict(x), attrs.get('entities'))),\n            list(map(lambda x: x.to_dict, original_example.entities.all())))\n        if not entities_valid:\n            raise ValidationError({'entities': _('Invalid entities')})\n\n\nclass TranslatedExampleLanguageValidator(object):\n    def __call__(self, attrs):\n        original_example = attrs.get('original_example')\n        language = attrs.get('language')\n        if original_example.repository_update.language == language:\n            raise ValidationError({'language': _(\n                'Can\\'t translate to the same language')})\n\n\nclass ExampleWithIntentOrEntityValidator(object):\n    def __call__(self, attrs):\n        intent = attrs.get('intent')\n        entities = attrs.get('entities')\n\n        if not intent and not entities:\n            raise ValidationError(_('Define a intent or one entity'))\n", "path": "bothub/api/validators.py"}, {"content": "from rest_framework import serializers\n\nfrom django.utils.translation import gettext as _\n\nfrom bothub.common.models import Repository\nfrom bothub.common.models import RepositoryExample\nfrom bothub.common.models import RepositoryExampleEntity\n\nfrom ..fields import EntityText\nfrom ..validators import CanContributeInRepositoryExampleValidator\nfrom ..validators import CanContributeInRepositoryValidator\nfrom ..validators import ExampleWithIntentOrEntityValidator\nfrom .translate import RepositoryTranslatedExampleSerializer\n\n\nclass RepositoryExampleEntitySerializer(serializers.ModelSerializer):\n    class Meta:\n        model = RepositoryExampleEntity\n        fields = [\n            'id',\n            'repository_example',\n            'start',\n            'end',\n            'entity',\n            'created_at',\n            'value',\n        ]\n\n    repository_example = serializers.PrimaryKeyRelatedField(\n        queryset=RepositoryExample.objects,\n        validators=[\n            CanContributeInRepositoryExampleValidator(),\n        ],\n        help_text=_('Example\\'s ID'))\n    value = serializers.SerializerMethodField()\n\n    def get_value(self, obj):\n        return obj.value\n\n\nclass NewRepositoryExampleEntitySerializer(serializers.ModelSerializer):\n    class Meta:\n        model = RepositoryExampleEntity\n        fields = [\n            'repository_example',\n            'start',\n            'end',\n            'entity',\n        ]\n\n\nclass RepositoryExampleSerializer(serializers.ModelSerializer):\n    class Meta:\n        model = RepositoryExample\n        fields = [\n            'id',\n            'repository_update',\n            'deleted_in',\n            'text',\n            'intent',\n            'language',\n            'created_at',\n            'entities',\n            'translations',\n        ]\n        read_only_fields = [\n            'repository_update',\n            'deleted_in',\n        ]\n\n    entities = RepositoryExampleEntitySerializer(\n        many=True,\n        read_only=True)\n    translations = RepositoryTranslatedExampleSerializer(\n        many=True,\n        read_only=True)\n    language = serializers.SerializerMethodField()\n\n    def get_language(self, obj):\n        return obj.language\n\n\nclass NewRepositoryExampleSerializer(serializers.ModelSerializer):\n    class Meta:\n        model = RepositoryExample\n        fields = [\n            'id',\n            'repository',\n            'repository_update',\n            'text',\n            'entities',\n            'intent',\n        ]\n\n    id = serializers.PrimaryKeyRelatedField(\n        read_only=True,\n        style={'show': False})\n    text = EntityText(style={'entities_field': 'entities'})\n    repository = serializers.PrimaryKeyRelatedField(\n        queryset=Repository.objects,\n        validators=[\n            CanContributeInRepositoryValidator(),\n        ],\n        source='repository_update',\n        style={'show': False})\n    repository_update = serializers.PrimaryKeyRelatedField(\n        read_only=True,\n        style={'show': False})\n    entities = NewRepositoryExampleEntitySerializer(\n        many=True,\n        style={'text_field': 'text'})\n\n    def __init__(self, *args, **kwargs):\n        super().__init__(*args, **kwargs)\n        self.validators.append(ExampleWithIntentOrEntityValidator())\n\n    def validate_repository(self, repository):\n        return repository.current_update()\n\n    def create(self, validated_data):\n        entities_data = validated_data.pop('entities')\n        example = self.Meta.model.objects.create(**validated_data)\n        for entity_data in entities_data:\n            RepositoryExampleEntity.objects.create(\n                repository_example=example,\n                **entity_data)\n        return example\n", "path": "bothub/api/serializers/example.py"}]}