Django工具栏：没有显示带有大于的过滤器的查询结果

Question

我在Django中有一个简单的查询。我安装了Django工具栏来检查SQL查询和相应的数据

我的模特：

class RecipePosition(models.Model):
    name = models.CharField(max_length=200,blank=True,help_text="If left blank will be same as Ingredient name Eg: Tomato pulp")
    mass_quantity = models.DecimalField(max_digits=19, decimal_places=10,null=True,blank=True,default=0,validators=[MinValueValidator(0)])
    title = models.CharField(max_length=200,blank=True)
    updated = models.DateTimeField(auto_now=True, auto_now_add=False)
    timestamp = models.DateTimeField(auto_now=False, auto_now_add=True)

我有以下django查询与过滤器。

RecipePosition.objects.all().filter(mass_quantity__gt = 0)

Django获取mass_quantity大于0的所有对象。

但是当我检查django中的sql - 工具栏时。表明：

SELECT "recipes_recipeposition"."id", 
       "recipes_recipeposition"."name",
       "recipes_recipeposition"."mass_quantity",
       "recipes_recipeposition"."title", 
       "recipes_recipeposition"."updated", 
       "recipes_recipeposition"."timestamp" 
FROM   "recipes_recipeposition" 
WHERE  "recipes_recipeposition"."mass_quantity" > 'Decimal(''0'')' 
ORDER  BY "recipes_recipeposition"."sequence_number" ASC 

我也在sqlite浏览器中尝试过这个命令，但它没有显示任何结果。

为什么django-toolbar没有显示正确的SQL？

按照我的说法，sql应该是：

SELECT "recipes_recipeposition"."id", 
       "recipes_recipeposition"."name", 
       "recipes_recipeposition"."mass_quantity",
       "recipes_recipeposition"."title", 
       "recipes_recipeposition"."updated", 
       "recipes_recipeposition"."timestamp" 
FROM   "recipes_recipeposition" 
WHERE  "recipes_recipeposition"."mass_quantity" > 0 
ORDER  BY "recipes_recipeposition"."sequence_number" ASC 

而这在sqlite浏览器中测试时会显示结果。

此外，当我在shell_plus上使用--print-sql --ipython节目测试时

$ python manage.py shell_plus --print-sql --ipython
System check identified some issues:

# Shell Plus Model Imports
from recipes.models import Recipe, RecipePosition

Python 3.6.4 (default, Jan  5 2018, 02:35:40) 
Type 'copyright', 'credits' or 'license' for more information
IPython 6.5.0 -- An enhanced Interactive Python. Type '?' for help.

In [1]: RecipePosition.objects.all().filter(mass_quantity__gt=0)
Out[1]: SELECT "recipes_recipeposition"."id",
       "recipes_recipeposition"."name",
       "recipes_recipeposition"."mass_quantity",
       "recipes_recipeposition"."title",
       "recipes_recipeposition"."updated",
       "recipes_recipeposition"."timestamp"
  FROM "recipes_recipeposition"
 WHERE "recipes_recipeposition"."mass_quantity" > '0'
 ORDER BY "recipes_recipeposition"."sequence_number" ASC
 LIMIT 21

只有在django-toolbar上它在Django shell上显示了Decimal（）的东西它显示了WHERE "recipes_recipeposition"."mass_quantity" > '0'

我还尝试了django-toolbar文档中提到的debugsqlshell。它显示"recipes_recipeposition"."mass_quantity" > '0'而不是"recipes_recipeposition"."mass_quantity" > 'Decimal(''0'')'

$ python manage.py debugsqlshell                   
Python 3.6.4 (default, Jan  5 2018, 02:35:40) 
Type 'copyright', 'credits' or 'license' for more information
IPython 6.5.0 -- An enhanced Interactive Python. Type '?' for help.

In [2]: from recipes.models import Recipe, RecipePosition

In [3]: RecipePosition.objects.all().filter(mass_quantity__gt = 0)
Out[3]: SELECT "recipes_recipeposition"."id",
       "recipes_recipeposition"."name",
       "recipes_recipeposition"."mass_quantity",
       "recipes_recipeposition"."title",
       "recipes_recipeposition"."updated",
       "recipes_recipeposition"."timestamp"
FROM "recipes_recipeposition"
WHERE "recipes_recipeposition"."mass_quantity" > '0'
ORDER BY "recipes_recipeposition"."sequence_number" ASC
LIMIT 21 [1.58ms]

我不知道为什么django-toolbar使用qazxsw poi而不是qazxsw poi

我想依靠django-toolbar，但现在我很担心。

Answer 1

好消息，我认为你需要做出最微小的改变！

代替：

"recipes_recipeposition"."mass_quantity" > 'Decimal(''0'')'

你需要：

"recipes_recipeposition"."mass_quantity" > '0'

Answer 2

经过多次努力并经历了代码之后。我在源代码中做了以下更改，然后一切都按照我想要的方式工作。

RecipePosition.objects.all().filter(mass_quantity__gt = 0)

最终输出看起来像是，十进制（0.0）替换为0和格式良好的sql

RecipePosition.objects.all().filter(mass_quantity__gt=0.0)