从管理页面中删除Django中的ManyToManyField并单击按钮 [英] Delete ManyToManyField in Django from admin page and on button click

问题描述

我有以下两种模型:

models.py

from django.db import models
from django.contrib.auth.models import User

class Skill(models.Model):
    skill = models.CharField(max_length=50)

    def __str__(self):
        return self.skill

class Designer(models.Model):
    user = models.OneToOneField(User, on_delete=models.CASCADE)
    description = models.TextField(max_length=500, blank=True)    
    date_created = models.DateField(auto_now_add=True)
    profile_img = models.ImageField(upload_to="gallery",null=True, blank=True)
    skills = models.ManyToManyField(Skill, blank=True)
    experience = models.IntegerField(blank=True, null=True)
    account_type = models.CharField(max_length=10)

    def __str__(self):
        return self.user.username

Designer模型是User模型的扩展，它与Skill模型具有ManyToMany关系.我可以从管理页面向设计器实例添加技能，但是没有删除选项.如何获得管理页面上的删除选项?我还想在按钮单击上添加删除功能.如何在代码中添加它?

Designer model extends from User model and it has ManyToMany relationship with Skill model. I can add skills to designer instance from admin page but there is no delete option. How can I get the delete option on admin page? I also would like to add the delete functionality on button click. How can I add it in the code?

推荐答案

在 ManyToMany 关系字段中，没有 delete 功能，我们需要使用 remove 实例或为了清除字段值，我们需要使用 clear

In ManyToMany relationship field there is no delete functionality we need to use remove an instance for that or in order to clear the field value we need to use clear link

为您辩护

our_desire_skill = skills.objects.filter(skill=search_skill)
desiner_user = Designer.objects.get(user=our_desire_user)
desiner_user.skills.remove(our_desire_skill)

如果要从管理页面更改 ManyToManyFields ，请确保该字段类似于 raw_id_fields

If you want to change ManyToManyFields from admin page need to make sure that field is like raw_id_fields link Then you can able to update your ManyToManyField store value from admin site.

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