<div class="from-group">

                    <label for="pwd">验证码</label>

                    <div class="row">

                        <div class="col-md-6">

                            <input type="text" class=" form-control" id="valid_code">

                        </div>

                        <div class="col-md-6">

                             <img width="270" height="36" id="valid_code_img" src="/get_validCode_img/" alt="">

                        </div>

                    </div>

def get_validCode_img(request):

    def get_random_color():

        return (random.randint(0, 255), random.randint(0, 255), random.randint(0, 255))

    # 方式一

    # with open('luffy.png',"rb") as f:

    #     data=f.read()

    # 方式二

    # from PIL import Image

    # img = Image.new('RGB',(270,40),color=get_random_color())

    # with open('validCode.png','wb') as f:

    #     img.save(f,'png')

    # with open('validCode.png',"rb") as f:

    #     data=f.read()

    # return HttpResponse(data)

    # 方式3

    #     from PIL import Image

    #     from io import BytesIO

    #     img = Image.new('RGB',(270,40),color=get_random_color())

    #

    #     f= BytesIO()

    #     img.save(f,'png')

    #     data = f.getvalue()

    #     return HttpResponse(data)

    #

    from PIL import Image, ImageDraw, ImageFont

    from io import BytesIO

    img = Image.new('RGB', (270, 40), color=get_random_color())

    draw = ImageDraw.Draw(img)

    pingfang = ImageFont.truetype('static/font/pingfang.ttf', size=28)

    char =str(random.randint(0,9))

    for i in range(5):

        random_num = str(random.randint(0, 9))

        random_low = chr(random.randint(95, 122))

        random_up = chr(random.randint(65, 90))

        random_char = random.choice([random_low,random_num,random_up])

        draw.text((i*50+20, 5), random_char, get_random_color(), font=pingfang)

    f = BytesIO()

    img.save(f, 'png')

    data = f.getvalue()

    return HttpResponse(data)

from django.db import models

# Create your models here.

from django.contrib.auth.models import AbstractUser

class UserInfo(AbstractUser):

    """

    用户信息

    """

    nid = models.AutoField(primary_key=True)

    telephone = models.CharField(max_length=11, null=True, unique=True)

    avatar = models.FileField(upload_to='avatars/', default="avatars/default.png")

    create_time = models.DateTimeField(verbose_name='创建时间', auto_now_add=True)

    blog = models.OneToOneField(to='Blog', to_field='nid', null=True, on_delete=models.CASCADE)

    def __str__(self):

        return self.username

class Blog(models.Model):

    """

    博客信息

    """

    nid = models.AutoField(primary_key=True)

    title = models.CharField(verbose_name='个人博客标题', max_length=64)

    site_name = models.CharField(verbose_name='站点名称', max_length=64)

    theme = models.CharField(verbose_name='博客主题', max_length=32)

    def __str__(self):

        return self.title

class Category(models.Model):

    """

    博主个人文章分类表

    """

    nid = models.AutoField(primary_key=True)

    title = models.CharField(verbose_name='分类标题', max_length=32)

    blog = models.ForeignKey(verbose_name='所属博客', to='Blog', to_field='nid', on_delete=models.CASCADE)

    def __str__(self):

        return self.title

class Tag(models.Model):

    nid = models.AutoField(primary_key=True)

    title = models.CharField(verbose_name='标签名称', max_length=32)

    blog = models.ForeignKey(verbose_name='所属博客', to='Blog', to_field='nid', on_delete=models.CASCADE)

    def __str__(self):

        return self.title

class Article(models.Model):

    nid = models.AutoField(primary_key=True)

    title = models.CharField(max_length=50, verbose_name='文章标题')

    desc = models.CharField(max_length=255, verbose_name='文章描述')

    create_time = models.DateTimeField(verbose_name='创建时间', auto_now_add=True)

    content = models.TextField()

    comment_count = models.IntegerField(default=0)

    up_count = models.IntegerField(default=0)

    down_count = models.IntegerField(default=0)

    user = models.ForeignKey(verbose_name='作者', to='UserInfo', to_field='nid', on_delete=models.CASCADE)

    category = models.ForeignKey(to='Category', to_field='nid', null=True, on_delete=models.CASCADE)

    tags = models.ManyToManyField(

        to="Tag",

        through='Article2Tag',

        through_fields=('article', 'tag'),

    )

    def __str__(self):

        return self.title

class Article2Tag(models.Model):

    nid = models.AutoField(primary_key=True)

    article = models.ForeignKey(verbose_name='文章', to="Article", to_field='nid', on_delete=models.CASCADE)

    tag = models.ForeignKey(verbose_name='标签', to="Tag", to_field='nid', on_delete=models.CASCADE)

    class Meta:

        unique_together = [

            ('article', 'tag'),

        ]

    def __str__(self):

        v = self.article.title + "---" + self.tag.title

        return v

class ArticleUpDown(models.Model):

    """

    点赞表

    """

    nid = models.AutoField(primary_key=True)

    user = models.ForeignKey('UserInfo', null=True, on_delete=models.CASCADE)

    article = models.ForeignKey("Article", null=True, on_delete=models.CASCADE)

    is_up = models.BooleanField(default=True)

    class Meta:

        unique_together = [

            ('article', 'user'),

        ]

class Comment(models.Model):

    """

    评论表

    """

    nid = models.AutoField(primary_key=True)

    article = models.ForeignKey(verbose_name='评论文章', to='Article', to_field='nid', on_delete=models.CASCADE)

    user = models.ForeignKey(verbose_name='评论者', to='UserInfo', to_field='nid', on_delete=models.CASCADE)

    content = models.CharField(verbose_name='评论内容', max_length=255)

    create_time = models.DateTimeField(verbose_name='创建时间', auto_now_add=True)

    parent_comment = models.ForeignKey('self', null=True, on_delete=models.CASCADE)

    def __str__(self):

        return self.content