alter to text field

problem/migrations/0012_auto_20180501_0436.py

@@ -0,0 +1,87 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.11.3 on 2018-05-01 04:36
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+import django.db.models.deletion
+import utils.models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('problem', '0011_fix_problem_ac_count'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='problem',
+            name='_id',
+            field=models.TextField(db_index=True),
+        ),
+        migrations.AlterField(
+            model_name='problem',
+            name='contest',
+            field=models.ForeignKey(null=True, on_delete=django.db.models.deletion.CASCADE, to='contest.Contest'),
+        ),
+        migrations.AlterField(
+            model_name='problem',
+            name='difficulty',
+            field=models.TextField(),
+        ),
+        migrations.AlterField(
+            model_name='problem',
+            name='hint',
+            field=utils.models.RichTextField(null=True),
+        ),
+        migrations.AlterField(
+            model_name='problem',
+            name='last_update_time',
+            field=models.DateTimeField(null=True),
+        ),
+        migrations.AlterField(
+            model_name='problem',
+            name='rule_type',
+            field=models.TextField(),
+        ),
+        migrations.AlterField(
+            model_name='problem',
+            name='source',
+            field=models.TextField(null=True),
+        ),
+        migrations.AlterField(
+            model_name='problem',
+            name='spj_code',
+            field=models.TextField(null=True),
+        ),
+        migrations.AlterField(
+            model_name='problem',
+            name='spj_language',
+            field=models.TextField(null=True),
+        ),
+        migrations.AlterField(
+            model_name='problem',
+            name='spj_version',
+            field=models.TextField(null=True),
+        ),
+        migrations.AlterField(
+            model_name='problem',
+            name='test_case_id',
+            field=models.TextField(),
+        ),
+        migrations.AlterField(
+            model_name='problem',
+            name='title',
+            field=models.TextField(),
+        ),
+        migrations.AlterField(
+            model_name='problem',
+            name='total_score',
+            field=models.IntegerField(default=0),
+        ),
+        migrations.AlterField(
+            model_name='problemtag',
+            name='name',
+            field=models.TextField(),
+        ),
+    ]

problem/models.py

@@ -8,7 +8,7 @@ from utils.constants import Choices
 
 
 class ProblemTag(models.Model):
-    name = models.CharField(max_length=30)
+    name = models.TextField()
 
     class Meta:
         db_table = "problem_tag"
@@ -27,26 +27,26 @@ class ProblemDifficulty(object):
 
 class Problem(models.Model):
     # display ID
-    _id = models.CharField(max_length=24, db_index=True)
-    contest = models.ForeignKey(Contest, null=True, blank=True)
+    _id = models.TextField(db_index=True)
+    contest = models.ForeignKey(Contest, null=True)
     # for contest problem
     is_public = models.BooleanField(default=False)
-    title = models.CharField(max_length=128)
+    title = models.TextField()
     # HTML
     description = RichTextField()
     input_description = RichTextField()
     output_description = RichTextField()
     # [{input: "test", output: "123"}, {input: "test123", output: "456"}]
     samples = JSONField()
-    test_case_id = models.CharField(max_length=32)
+    test_case_id = models.TextField()
     # [{"input_name": "1.in", "output_name": "1.out", "score": 0}]
     test_case_score = JSONField()
-    hint = RichTextField(blank=True, null=True)
+    hint = RichTextField(null=True)
     languages = JSONField()
     template = JSONField()
     create_time = models.DateTimeField(auto_now_add=True)
     # we can not use auto_now here
-    last_update_time = models.DateTimeField(blank=True, null=True)
+    last_update_time = models.DateTimeField(null=True)
     created_by = models.ForeignKey(User)
     # ms
     time_limit = models.IntegerField()
@@ -54,17 +54,17 @@ class Problem(models.Model):
     memory_limit = models.IntegerField()
     # special judge related
     spj = models.BooleanField(default=False)
-    spj_language = models.CharField(max_length=32, blank=True, null=True)
-    spj_code = models.TextField(blank=True, null=True)
-    spj_version = models.CharField(max_length=32, blank=True, null=True)
+    spj_language = models.TextField(null=True)
+    spj_code = models.TextField(null=True)
+    spj_version = models.TextField(null=True)
     spj_compile_ok = models.BooleanField(default=False)
-    rule_type = models.CharField(max_length=32)
+    rule_type = models.TextField()
     visible = models.BooleanField(default=True)
-    difficulty = models.CharField(max_length=32)
+    difficulty = models.TextField()
     tags = models.ManyToManyField(ProblemTag)
-    source = models.CharField(max_length=200, blank=True, null=True)
+    source = models.TextField(null=True)
     # for OI mode
-    total_score = models.IntegerField(default=0, blank=True)
+    total_score = models.IntegerField(default=0)
     submission_number = models.BigIntegerField(default=0)
     accepted_number = models.BigIntegerField(default=0)
     # {JudgeStatus.ACCEPTED: 3, JudgeStaus.WRONG_ANSWER: 11}, the number means count