Menu
For example, there is an object in a nested loop:
{% for fieldset in inline_admin_form %}
{% for line in fieldset %}
{% for field in line %}
{% if field.is_hidden %} {{ field.field }} {% endif %}
{% endfor %}
{% endfor %}
{% endfor %}
{% endif %}
Now I want to check the class name and some information about field.field, so I use field.field.__repr__() to replace field.field.
However, the django template complains about it after the change:
Variables and attributes may not begin with underscores: 'field.field.__repr__'
Does anyone have idea about this? And is there any better way to debug for a variable in django template? (I tried {% debug %} but found it awful when I want to check a variable in a nested loop..)
403
In Python, __repr__ is a special method used to represent a class's objects as a string. __repr__ is called by the repr() built-in function. You can define your own string representation of your class objects using the __repr__ method. Special methods are a set of predefined methods used to enrich your classes.
Python __repr__() function returns the object representation in string format. This method is called when repr() function is invoked on the object. If possible, the string returned should be a valid Python expression that can be used to reconstruct the object again.
The repr() function returns the string representation of the value passed to eval function by default. For the custom class object, it returns a string enclosed in angle brackets that contains the name and address of the object by default.
str function in a django model returns a string that is exactly rendered as the display name of instances for that model. # Create your models here. This will display the objects as something always in the admin interface.
{{ value|stringformat:'r' }}
uses the string % operator style formatting with the r format which uses repr()
86
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
