Django学习 - day7 - 图1
    负情绪是真的烦人，要是每天都单纯的像个孩子就好啦！
    社会有时候真的好复杂，每个人的情绪都会相互影响，努力保持自己吧！
    今天的内容是创建一个models，附上代码 （知识点呢）

    • unique代表唯一
    • 当字段为int时，如果要求可为空，则需要blank=true，和null = true
    • choices为选择器
    • DecimalField为支持固定精度的十进制数，有decimal_places代表小数位，max_digits代表整数最大位
    • 定义Meta ，比如表名，所有非字段的东西都在这里定义！详见丢下方
    • 其他详见 https://docs.djangoproject.com/zh-hans/4.0/ref/models/fields/#
    1. FIRST_INTERVIEW_RESULT_TYPE = ((u'建议复试', u'建议复试'), (u'待定', u'待定'), (u'放弃', u'放弃'))
    3. INTERVIEW_RESULT_TYPE = ((u'建议录用', u'建议录用'), (u'待定', u'待定'), (u'放弃', u'放弃'))
    5. DEGREE_TYPE = ((u'本科', u'本科'), (u'研究所', u'研究所'), (u'博士', u'博士'))
    7. HR_SCORE_TYPE = ((u'S', u'S'), (u'A', u'A'), (u'B', u'B'))
    10. class Candidate(models.Model):
    12.     # 基础信息
    13.     userid = models.IntegerField(unique=True, blank=True, null=True, verbose_name=u'应聘者id')
    14.     username = models.CharField(max_length=135, verbose_name=u'应聘者昵称')
    15.     city = models.CharField(max_length=135, verbose_name=u'应聘者城市')
    16.     phone = models.CharField(max_length=135, verbose_name=u'应聘者手机号')
    17.     email = models.EmailField(max_length=135, blank=True, verbose_name=u'应聘者邮箱')
    18.     apply_position = models.CharField(max_length=135, blank=True, verbose_name=u'应聘者职位')
    19.     born_address = models.CharField(max_length=135,blank=True, verbose_name=u'应聘者生源地')
    20.     gender = models.CharField(max_length=135, verbose_name=u'性别')
    21.     candidate_remark = models.CharField(max_length=135, blank=True, verbose_name=u'候选人信息备注')
    23.     # 学校与学历信息
    24.     bachelor_school = models.CharField(max_length=135, blank=True, verbose_name=u'本科学校')
    25.     master_school = models.CharField(max_length=135, blank=True, verbose_name=u'研究所学校')
    26.     doctor_school = models.CharField(max_length=135, blank=True, verbose_name=u'博士生学校')
    27.     major = models.CharField(max_length=135, blank=True, verbose_name=u'专业')
    28.     degree = models.CharField(max_length=135,choices=DEGREE_TYPE, blank=True, verbose_name=u'应聘者昵称')
    30.     # 综合能力测评成绩，笔记成绩
    31.     test_score_of_general_ability = models.DecimalField(decimal_places=1, null=True, max_digits=3, blank=True,
    32.                                                         verbose_name=u'综合能力测评成绩')
    33.     paper_score = models.DecimalField(decimal_places=1, null=True, max_digits=3, blank=True, verbose_name=u'笔试成绩')
    35.     # 第一轮面试记录
    36.     first_score = models.DecimalField(decimal_places=1, null=True, max_digits=2, blank=True, verbose_name=u'初试分')
    37.     first_learning_ability = models.DecimalField(decimal_places=1, null=True, max_digits=2, blank=True,
    38.                                                  verbose_name=u'学习能力得分')
    39.     first_professional_competency = models.DecimalField(decimal_places=1, null=True, max_digits=2, blank=True,
    40.                                                         verbose_name=u'专业能力得分')
    41.     first_disadvantage = models.TextField(max_length=1024, blank=True, verbose_name=u'顾虑和不足')
    42.     first_advantage = models.TextField(max_length=1024, blank=True, verbose_name=u'优势')
    43.     first_result = models.CharField(max_length=256, choices=FIRST_INTERVIEW_RESULT_TYPE, blank=True,
    44.                                     verbose_name=u'初试结果')
    45.     first_recommend_position = models.CharField(max_length=256, blank=True, verbose_name=u'推荐部门')
    46.     first_interviewer = models.CharField(max_length=256, blank=True, verbose_name=u'面试官')
    47.     first_remark = models.CharField(max_length=135, blank=True, verbose_name=u'初试备注')
    49.     # 第二轮面试记录
    50.     second_score = models.DecimalField(decimal_places=1, null=True, max_digits=2, blank=True, verbose_name=u'复试分')
    51.     second_learning_ability = models.DecimalField(decimal_places=1, null=True, max_digits=2, blank=True,
    52.                                                   verbose_name=u'学习能力得分')
    53.     second_professional_competency = models.DecimalField(decimal_places=1, null=True, max_digits=2, blank=True,
    54.                                                          verbose_name=u'专业能力得分')
    55.     second_pursue_of_excellence = models.DecimalField(decimal_places=1, null=True, max_digits=2, blank=True,
    56.                                                       verbose_name=u'追求卓越得分')
    57.     second_communication_ability = models.DecimalField(decimal_places=1, null=True, max_digits=2, blank=True,
    58.                                                        verbose_name=u'沟通能力得分')
    59.     second_pressure_score = models.DecimalField(decimal_places=1, null=True, max_digits=2, blank=True,
    60.                                                 verbose_name=u'抗压能力得分')
    61.     second_disadvantage = models.TextField(max_length=1024, blank=True, verbose_name=u'顾虑和不足')
    62.     second_advantage = models.TextField(max_length=1024, blank=True, verbose_name=u'优势')
    63.     second_result = models.CharField(max_length=256, choices=FIRST_INTERVIEW_RESULT_TYPE, blank=True,
    64.                                      verbose_name=u'复试结果')
    65.     second_recommend_position = models.CharField(max_length=256, blank=True, verbose_name=u'推荐部门')
    66.     second_interviewer = models.CharField(max_length=256, blank=True, verbose_name=u'面试官')
    67.     second_remark = models.CharField(max_length=135, blank=True, verbose_name=u'复试备注')
    69.     # HR终面
    70.     hr_score = models.CharField(max_length=10, choices=DEGREE_TYPE, blank=True, verbose_name=u'HR复试综合等级')
    71.     hr_responsibility = models.CharField(max_length=10, choices=HR_SCORE_TYPE, blank=True, verbose_name=u'责任心')
    72.     hr_communication_ability = models.CharField(max_length=10, choices=HR_SCORE_TYPE, blank=True, verbose_name=u'坦诚沟通')
    73.     hr_logic_ability = models.CharField(max_length=10, choices=HR_SCORE_TYPE, blank=True, verbose_name=u'逻辑思维')
    74.     hr_potential = models.CharField(max_length=10, choices=HR_SCORE_TYPE, blank=True, verbose_name=u'发展潜力')
    75.     hr_stability = models.CharField(max_length=10, choices=HR_SCORE_TYPE, blank=True, verbose_name=u'稳定性')
    76.     hr_disadvantage = models.TextField(max_length=1024, blank=True, verbose_name=u'顾虑和不足')
    77.     hr_advantage = models.TextField(max_length=1024, blank=True, verbose_name=u'优势')
    78.     hr_result = models.CharField(max_length=256, choices=FIRST_INTERVIEW_RESULT_TYPE, blank=True,
    79.                                  verbose_name=u'HR复试结果')
    80.     hr_interviewer = models.CharField(max_length=256, blank=True, verbose_name=u'HR面试官')
    81.     hr_remark = models.CharField(max_length=135, blank=True, verbose_name=u'HR复试备注')
    83.     creator = models.CharField(max_length=256, blank=True, verbose_name=u'候选人数据的创建人')
    84.     created_data = models.DateTimeField(auto_now_add=True, blank=True, verbose_name=u'创建时间')
    85.     modified_date = models.DateTimeField(auto_now=True, blank=True, verbose_name=u'更新时间')
    86.     last_editor = models.CharField(max_length=256, blank=True, verbose_name=u'最后编辑者')
    88.     class Meta:
    89.         db_table = u'candidate'
    90.         verbose_name = u'应聘者'
    91.         verbose_name_plural = u'应聘者'
    93.     # 当我们把这个对象转换成字符串的时候，就直接调用这个函数的返回值，使用候选人的名字，作为展示对象
    94.     def __str__(self):
    95.         return self.username

    Meta：
    模型的元数据即“所有不是字段的东西”，比如排序选项（ ordering ），数据库表名（ db_table ），或是阅读友好的单复数名（ verbose_name 和 verbose_name_plural ）。这些都不是必须的，并且在模型当中添加 Meta类 也完全是可选的。
    具体在 https://docs.djangoproject.com/zh-hans/4.0/ref/models/options/ 里面有所有的可选项

    1. from django.db import models
    3. class Ox(models.Model):
    4.     horn_length = models.IntegerField()
    6.     class Meta:
    7.         ordering = ["horn_length"]
    8.         verbose_name_plural = "oxen"