window系统下为django自动绘制模型类关系图

发布于：2024-06-21 ⋅ 阅读:(116) ⋅ 点赞:(0)

Django 提供第三方包 django-extensions，可以用来将 Django 中的 Models 生成 E-R 图。

1 安装包

pip install django-extensions

2 配置

在 Django settings.py 文件， INSTALLED_APPS 中添加 django_extensions

INSTALLED_APPS = (
    'django_extensions',
)

3 生成 dot 文件和 png 图片

  • 生成全部 model 的 E-R 图
python manage.py graph_models -a > all.dot
  • 单独某个 Django App （以 django_view_permission 为例） 生成 dot 文件
python manage.py graph_models django_view_permission > django_view_permission.dot

导出的 dot 内容如下：django_view_permission.dot

digraph model_graph {
  // Dotfile by Django-Extensions graph_models
  // Created: 2018-03-03 14:55
  // Cli Options: django_view_permission

  fontname = "Helvetica"
  fontsize = 8
  splines  = true

  node [
    fontname = "Helvetica"
    fontsize = 8
    shape = "plaintext"
  ]

  edge [
    fontname = "Helvetica"
    fontsize = 8
  ]

  // Labels

  django_view_permission_models_CommonElement [label=<
    <TABLE BGCOLOR="palegoldenrod" BORDER="0" CELLBORDER="0" CELLSPACING="0">
    <TR><TD COLSPAN="2" CELLPADDING="4" ALIGN="CENTER" BGCOLOR="olivedrab4">
    <FONT FACE="Helvetica Bold" COLOR="white">
    CommonElement
    </FONT></TD></TR>
  
    <TR><TD ALIGN="LEFT" BORDER="0">
    <FONT COLOR="#7B7B7B" FACE="Helvetica ">create_time</FONT>
    </TD><TD ALIGN="LEFT">
    <FONT COLOR="#7B7B7B" FACE="Helvetica ">DateTimeField</FONT>
    </TD></TR>
  
    <TR><TD ALIGN="LEFT" BORDER="0">
    <FONT COLOR="#7B7B7B" FACE="Helvetica ">doc</FONT>
    </TD><TD ALIGN="LEFT">
    <FONT COLOR="#7B7B7B" FACE="Helvetica ">TextField</FONT>
    </TD></TR>
  
    <TR><TD ALIGN="LEFT" BORDER="0">
    <FONT COLOR="#7B7B7B" FACE="Helvetica ">update_time</FONT>
    </TD><TD ALIGN="LEFT">
    <FONT COLOR="#7B7B7B" FACE="Helvetica ">DateTimeField</FONT>
    </TD></TR>
  
    </TABLE>
    >]

  django_view_permission_models_View [label=<
    <TABLE BGCOLOR="palegoldenrod" BORDER="0" CELLBORDER="0" CELLSPACING="0">
    <TR><TD COLSPAN="2" CELLPADDING="4" ALIGN="CENTER" BGCOLOR="olivedrab4">
    <FONT FACE="Helvetica Bold" COLOR="white">
    View<BR/>&lt;<FONT FACE="Helvetica Italic">CommonElement</FONT>&gt;
    </FONT></TD></TR>
  
    <TR><TD ALIGN="LEFT" BORDER="0">
    <FONT FACE="Helvetica Bold">id</FONT>
    </TD><TD ALIGN="LEFT">
    <FONT FACE="Helvetica Bold">AutoField</FONT>
    </TD></TR>
  
    <TR><TD ALIGN="LEFT" BORDER="0">
    <FONT COLOR="#7B7B7B" FACE="Helvetica Italic">create_time</FONT>
    </TD><TD ALIGN="LEFT">
    <FONT COLOR="#7B7B7B" FACE="Helvetica Italic">DateTimeField</FONT>
    </TD></TR>
  
    <TR><TD ALIGN="LEFT" BORDER="0">
    <FONT COLOR="#7B7B7B" FACE="Helvetica Italic">doc</FONT>
    </TD><TD ALIGN="LEFT">
    <FONT COLOR="#7B7B7B" FACE="Helvetica Italic">TextField</FONT>
    </TD></TR>
  
    <TR><TD ALIGN="LEFT" BORDER="0">
    <FONT COLOR="#7B7B7B" FACE="Helvetica ">func</FONT>
    </TD><TD ALIGN="LEFT">
    <FONT COLOR="#7B7B7B" FACE="Helvetica ">CharField</FONT>
    </TD></TR>
  
    <TR><TD ALIGN="LEFT" BORDER="0">
    <FONT COLOR="#7B7B7B" FACE="Helvetica ">module</FONT>
    </TD><TD ALIGN="LEFT">
    <FONT COLOR="#7B7B7B" FACE="Helvetica ">CharField</FONT>
    </TD></TR>
  
    <TR><TD ALIGN="LEFT" BORDER="0">
    <FONT COLOR="#7B7B7B" FACE="Helvetica ">name</FONT>
    </TD><TD ALIGN="LEFT">
    <FONT COLOR="#7B7B7B" FACE="Helvetica ">CharField</FONT>
    </TD></TR>
  
    <TR><TD ALIGN="LEFT" BORDER="0">
    <FONT COLOR="#7B7B7B" FACE="Helvetica Italic">update_time</FONT>
    </TD><TD ALIGN="LEFT">
    <FONT COLOR="#7B7B7B" FACE="Helvetica Italic">DateTimeField</FONT>
    </TD></TR>
  
    </TABLE>
    >]

  django_view_permission_models_ViewSet [label=<
    <TABLE BGCOLOR="palegoldenrod" BORDER="0" CELLBORDER="0" CELLSPACING="0">
    <TR><TD COLSPAN="2" CELLPADDING="4" ALIGN="CENTER" BGCOLOR="olivedrab4">
    <FONT FACE="Helvetica Bold" COLOR="white">
    ViewSet<BR/>&lt;<FONT FACE="Helvetica Italic">CommonElement</FONT>&gt;
    </FONT></TD></TR>
  
    <TR><TD ALIGN="LEFT" BORDER="0">
    <FONT FACE="Helvetica Bold">id</FONT>
    </TD><TD ALIGN="LEFT">
    <FONT FACE="Helvetica Bold">AutoField</FONT>
    </TD></TR>
  
    <TR><TD ALIGN="LEFT" BORDER="0">
    <FONT COLOR="#7B7B7B" FACE="Helvetica Italic">create_time</FONT>
    </TD><TD ALIGN="LEFT">
    <FONT COLOR="#7B7B7B" FACE="Helvetica Italic">DateTimeField</FONT>
    </TD></TR>
  
    <TR><TD ALIGN="LEFT" BORDER="0">
    <FONT COLOR="#7B7B7B" FACE="Helvetica Italic">doc</FONT>
    </TD><TD ALIGN="LEFT">
    <FONT COLOR="#7B7B7B" FACE="Helvetica Italic">TextField</FONT>
    </TD></TR>
  
    <TR><TD ALIGN="LEFT" BORDER="0">
    <FONT FACE="Helvetica ">name</FONT>
    </TD><TD ALIGN="LEFT">
    <FONT FACE="Helvetica ">CharField</FONT>
    </TD></TR>
  
    <TR><TD ALIGN="LEFT" BORDER="0">
    <FONT COLOR="#7B7B7B" FACE="Helvetica Italic">update_time</FONT>
    </TD><TD ALIGN="LEFT">
    <FONT COLOR="#7B7B7B" FACE="Helvetica Italic">DateTimeField</FONT>
    </TD></TR>
  
    </TABLE>
    >]

  django_view_permission_models_ViewPermission [label=<
    <TABLE BGCOLOR="palegoldenrod" BORDER="0" CELLBORDER="0" CELLSPACING="0">
    <TR><TD COLSPAN="2" CELLPADDING="4" ALIGN="CENTER" BGCOLOR="olivedrab4">
    <FONT FACE="Helvetica Bold" COLOR="white">
    ViewPermission<BR/>&lt;<FONT FACE="Helvetica Italic">CommonElement</FONT>&gt;
    </FONT></TD></TR>
  
    <TR><TD ALIGN="LEFT" BORDER="0">
    <FONT FACE="Helvetica Bold">id</FONT>
    </TD><TD ALIGN="LEFT">
    <FONT FACE="Helvetica Bold">AutoField</FONT>
    </TD></TR>
  
    <TR><TD ALIGN="LEFT" BORDER="0">
    <FONT COLOR="#7B7B7B" FACE="Helvetica Italic">create_time</FONT>
    </TD><TD ALIGN="LEFT">
    <FONT COLOR="#7B7B7B" FACE="Helvetica Italic">DateTimeField</FONT>
    </TD></TR>
  
    <TR><TD ALIGN="LEFT" BORDER="0">
    <FONT COLOR="#7B7B7B" FACE="Helvetica Italic">doc</FONT>
    </TD><TD ALIGN="LEFT">
    <FONT COLOR="#7B7B7B" FACE="Helvetica Italic">TextField</FONT>
    </TD></TR>
  
    <TR><TD ALIGN="LEFT" BORDER="0">
    <FONT COLOR="#7B7B7B" FACE="Helvetica Italic">update_time</FONT>
    </TD><TD ALIGN="LEFT">
    <FONT COLOR="#7B7B7B" FACE="Helvetica Italic">DateTimeField</FONT>
    </TD></TR>
  
    </TABLE>
    >]
  // Relations

  django_view_permission_models_View -> django_view_permission_models_CommonElement
  [label="abstract\ninheritance"] [arrowhead=empty, arrowtail=none, dir=both];

  django_view_permission_models_ViewSet -> django_view_permission_models_View
  [label="views (viewset)"] [arrowhead=dot arrowtail=dot, dir=both];

  django_view_permission_models_ViewSet -> django_view_permission_models_CommonElement
  [label="abstract\ninheritance"] [arrowhead=empty, arrowtail=none, dir=both];
  account_models_BkUser [label=<
  <TABLE BGCOLOR="palegoldenrod" BORDER="0" CELLBORDER="0" CELLSPACING="0">
  <TR><TD COLSPAN="2" CELLPADDING="4" ALIGN="CENTER" BGCOLOR="olivedrab4">
  <FONT FACE="Helvetica Bold" COLOR="white">BkUser</FONT>
  </TD></TR>
  </TABLE>
  >]
  django_view_permission_models_ViewPermission -> account_models_BkUser
  [label="users (viewpermission)"] [arrowhead=dot arrowtail=dot, dir=both];

  django_view_permission_models_ViewPermission -> django_view_permission_models_View
  [label="views (viewpermission)"] [arrowhead=dot arrowtail=dot, dir=both];

  django_view_permission_models_ViewPermission -> django_view_permission_models_ViewSet
  [label="views_set (viewpermission)"] [arrowhead=dot arrowtail=dot, dir=both];

  django_view_permission_models_ViewPermission -> django_view_permission_models_CommonElement
  [label="abstract\ninheritance"] [arrowhead=empty, arrowtail=none, dir=both];
}

生成后的文件我没有找到在哪里，就自己建了同名的文件，输入了控制台输出的内容

如果有知道的，欢迎评论区告诉我，或者私信我，不胜感谢

  • 生成图片

由于生成的是 dot 格式的图片描述文件，需要使用工具进行转换成常用的 PNG 格式图片。可以下载 graphviz ，并将 /bin/dot.exe 加入系统 PATH 中（安装的时候有添加环境变量提示，勾选即可）。

dot -Tpng django_view_permission.dot > django_view_permission.png

 字体默认是 Roboto，可以换成其他的字体

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