Switch from char field to text field types

Author: gunthercox

chatterbot/constants.py

@@ -8,6 +8,9 @@
 The number 255 is used because that is the maximum length of a char field
 in most databases. This value should be enforced on a per-model basis by
 the data model for each storage adapter.
+
+DEPRECATED: This value is no longer as of ChatterBot 1.2.7. Statement tables
+are now created with a text field.
 '''
 STATEMENT_TEXT_MAX_LENGTH = 255
 

chatterbot/ext/django_chatterbot/abstract_models.py

@@ -49,13 +49,11 @@ class AbstractBaseStatement(models.Model, StatementMixin):
     using the attributes that exist on the default models.
     """
 
-    text = models.CharField(
-        max_length=constants.STATEMENT_TEXT_MAX_LENGTH,
+    text = models.TextField(
         help_text='The text of the statement.'
     )
 
-    search_text = models.CharField(
-        max_length=constants.STATEMENT_TEXT_MAX_LENGTH,
+    search_text = models.TextField(
         blank=True,
         help_text='A modified version of the statement text optimized for searching.'
     )
@@ -70,14 +68,12 @@ class AbstractBaseStatement(models.Model, StatementMixin):
         help_text='The date and time that the statement was created at.'
     )
 
-    in_response_to = models.CharField(
-        max_length=constants.STATEMENT_TEXT_MAX_LENGTH,
+    in_response_to = models.TextField(
         null=True,
         help_text='The text of the statement that this statement is in response to.'
     )
 
-    search_in_response_to = models.CharField(
-        max_length=constants.STATEMENT_TEXT_MAX_LENGTH,
+    search_in_response_to = models.TextField(
         blank=True,
         help_text='A modified version of the in_response_to text optimized for searching.'
     )

chatterbot/ext/sqlalchemy_app/models.py

@@ -1,4 +1,4 @@
-from sqlalchemy import Table, Column, Integer, String, DateTime, ForeignKey
+from sqlalchemy import Table, Column, Integer, String, Text, DateTime, ForeignKey
 from sqlalchemy.orm import relationship, declarative_base
 from sqlalchemy.sql import func
 from sqlalchemy.ext.declarative import declared_attr
@@ -55,12 +55,10 @@ class Statement(Base, StatementMixin):
 
     confidence = 0
 
-    text = Column(
-        String(constants.STATEMENT_TEXT_MAX_LENGTH)
-    )
+    text = Column(Text)
 
     search_text = Column(
-        String(constants.STATEMENT_TEXT_MAX_LENGTH),
+        Text,
         nullable=False,
         server_default=''
     )
@@ -83,12 +81,12 @@ class Statement(Base, StatementMixin):
     )
 
     in_response_to = Column(
-        String(constants.STATEMENT_TEXT_MAX_LENGTH),
+        Text,
         nullable=True
     )
 
     search_in_response_to = Column(
-        String(constants.STATEMENT_TEXT_MAX_LENGTH),
+        Text,
         nullable=False,
         server_default=''
     )