var Component=(()=>{var p=Object.create;var c=Object.defineProperty;var h=Object.getOwnPropertyDescriptor;var m=Object.getOwnPropertyNames;var u=Object.getPrototypeOf,N=Object.prototype.hasOwnProperty;var k=(a,n)=>()=>(n||a((n={exports:{}}).exports,n),n.exports),g=(a,n)=>{for(var s in n)c(a,s,{get:n[s],enumerable:!0})},i=(a,n,s,t)=>{if(n&&typeof n=="object"||typeof n=="function")for(let l of m(n))!N.call(a,l)&&l!==s&&c(a,l,{get:()=>n[l],enumerable:!(t=h(n,l))||t.enumerable});return a};var y=(a,n,s)=>(s=a!=null?p(u(a)):{},i(n||!a||!a.__esModule?c(s,"default",{value:a,enumerable:!0}):s,a)),w=a=>i(c({},"__esModule",{value:!0}),a);var d=k((B,o)=>{o.exports=_jsx_runtime});var j={};g(j,{default:()=>_,frontmatter:()=>f});var e=y(d()),f={title:"Django slug tutorial: adding slug field in a django model",slug:"django-slug-tutorial-adding-slug-field-in-a-django-model",description:"In this tutorial, we are going to learn what is a slug and how to add slug or SlugField in a Django model. Slug is just a part of URL which uniquely identifies a page or blog and explains the content of the page.",image:"https://cdn.procoding.org/django/django-slug-tutorial.jpg",publishedAt:"2020-05-25",updatedAt:"2020-05-25",isPublished:!0,category:"Django",metadescription:"Django slug tutorial, adding slug field in a django model or blog, for seo and readability using SlugField in models and prepopulated fields in admin.",keywords:"django,slug,tutorial,slugfield,model,add",subcategory:"tutorial",tags:["django","tutorial","slug"],author:"abhishek",id:"d63c20be-f4b2-4844-bfce-a73f747228e1"};function r(a){let n=Object.assign({p:"p",img:"img",h3:"h3",a:"a",code:"code",pre:"pre",span:"span",br:"br",blockquote:"blockquote",strong:"strong",ol:"ol",li:"li",h2:"h2"},a.components);return(0,e.jsxs)(e.Fragment,{children:[(0,e.jsx)(n.p,{children:(0,e.jsx)(n.img,{src:"https://cdn.procoding.org/django/django-slug-tutorial.jpg",alt:"django slug tutorial"})}),` `,(0,e.jsx)(n.p,{children:"Slugs are important for a website when it comes to SEO or readability of URLs."}),` `,(0,e.jsx)(n.h3,{children:"What is a slug?"}),` `,(0,e.jsxs)(n.p,{children:["Slugs are very common on the website. If you check one of the links of our website ",(0,e.jsx)(n.a,{href:"/custom-user-model-django/",children:"https://www.procoding.org/custom-user-model-django/"})," ",(0,e.jsx)(n.code,{children:"/custom-user-model-django/"})," this part is known as a slug."]}),` `,(0,e.jsxs)(n.p,{children:["For more detailed information you can read ",(0,e.jsx)(n.a,{href:"https://yoast.com/slug/",children:"Yoast's blog"}),"."]}),` `,(0,e.jsx)(n.p,{children:"So, in this tutorial, we will be doing the same with URLs on our website."}),` `,(0,e.jsx)(n.h3,{children:"Set up"}),` `,(0,e.jsx)(n.p,{children:"Install Django, start a new project and a new app. Here I am using Django version 3.0.6."}),` `,(0,e.jsx)(n.pre,{className:"language-bash",children:(0,e.jsxs)(n.code,{className:"language-bash code-highlight",children:[(0,e.jsxs)(n.span,{className:"code-line",children:["pip ",(0,e.jsx)(n.span,{className:"token function",children:"install"}),` django 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append ",(0,e.jsx)(n.code,{children:"slugapp"})]}),` `,(0,e.jsx)(n.pre,{className:"language-py",children:(0,e.jsxs)(n.code,{className:"language-py code-highlight",children:[(0,e.jsxs)(n.span,{className:"code-line",children:["INSTALLED_APPS ",(0,e.jsx)(n.span,{className:"token operator",children:"="})," ",(0,e.jsx)(n.span,{className:"token punctuation",children:"["}),` `]}),(0,e.jsxs)(n.span,{className:"code-line",children:[" ",(0,e.jsx)(n.span,{className:"token string",children:"'django.contrib.admin'"}),(0,e.jsx)(n.span,{className:"token punctuation",children:","}),` `]}),(0,e.jsxs)(n.span,{className:"code-line",children:[" ",(0,e.jsx)(n.span,{className:"token string",children:"'django.contrib.auth'"}),(0,e.jsx)(n.span,{className:"token punctuation",children:","}),` `]}),(0,e.jsxs)(n.span,{className:"code-line",children:[" ",(0,e.jsx)(n.span,{className:"token string",children:"'django.contrib.contenttypes'"}),(0,e.jsx)(n.span,{className:"token punctuation",children:","}),` 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`,(0,e.jsx)(n.li,{children:"blog_detail.html"}),` `]}),` `,(0,e.jsx)(n.p,{children:"At this point your project structure should like this, based on the folder we have added"}),` `,(0,e.jsx)(n.pre,{children:(0,e.jsxs)(n.code,{className:"code-highlight",children:[(0,e.jsx)(n.span,{className:"code-line",children:`slugproject/ `}),(0,e.jsx)(n.span,{className:"code-line",children:`|-- slugapp/ `}),(0,e.jsx)(n.span,{className:"code-line",children:`| |-- __init__.py `}),(0,e.jsx)(n.span,{className:"code-line",children:`| |-- admin.py `}),(0,e.jsx)(n.span,{className:"code-line",children:`| |-- apps.py `}),(0,e.jsx)(n.span,{className:"code-line",children:`| |-- models.py `}),(0,e.jsx)(n.span,{className:"code-line",children:`| |-- models.py `}),(0,e.jsx)(n.span,{className:"code-line",children:`| |-- tests.py `}),(0,e.jsx)(n.span,{className:"code-line",children:"| `-- views.py\n"}),(0,e.jsx)(n.span,{className:"code-line",children:`|-- slugproject/ `}),(0,e.jsx)(n.span,{className:"code-line",children:`| |-- __init__.py `}),(0,e.jsx)(n.span,{className:"code-line",children:`| |-- asgi.py `}),(0,e.jsx)(n.span,{className:"code-line",children:`| |-- settings.py `}),(0,e.jsx)(n.span,{className:"code-line",children:`| |-- urls.py `}),(0,e.jsx)(n.span,{className:"code-line",children:"| `-- wsgi.py\n"}),(0,e.jsx)(n.span,{className:"code-line",children:`|-- templates `}),(0,e.jsx)(n.span,{className:"code-line",children:`| |-- blog_detail.html `}),(0,e.jsx)(n.span,{className:"code-line",children:"| `-- blog_list.html\n"}),(0,e.jsx)(n.span,{className:"code-line",children:`|-- db.sqlite3 `}),(0,e.jsx)(n.span,{className:"code-line",children:"`-- manage.py\n"})]})}),` `,(0,e.jsx)(n.p,{children:"Then setup URLs to point our views and render pages"}),` `,(0,e.jsxs)(n.p,{children:["Create new file ",(0,e.jsx)(n.code,{children:"slugapp/urls.py"})," inside our app and add URLs"]}),` `,(0,e.jsx)(n.pre,{className:"language-py",children:(0,e.jsxs)(n.code,{className:"language-py code-highlight",children:[(0,e.jsxs)(n.span,{className:"code-line",children:[(0,e.jsx)(n.span,{className:"token keyword",children:"from"})," django",(0,e.jsx)(n.span,{className:"token punctuation",children:"."}),"urls ",(0,e.jsx)(n.span,{className:"token keyword",children:"import"}),` path `]}),(0,e.jsxs)(n.span,{className:"code-line",children:[(0,e.jsx)(n.span,{className:"token keyword",children:"from"})," slugapp",(0,e.jsx)(n.span,{className:"token punctuation",children:"."}),"views ",(0,e.jsx)(n.span,{className:"token keyword",children:"import"})," BlogListView",(0,e.jsx)(n.span,{className:"token punctuation",children:","}),` BlogDetailView `]}),(0,e.jsx)(n.span,{className:"code-line",children:` `}),(0,e.jsxs)(n.span,{className:"code-line",children:["urlpatterns ",(0,e.jsx)(n.span,{className:"token operator",children:"="})," ",(0,e.jsx)(n.span,{className:"token punctuation",children:"["}),` `]}),(0,e.jsxs)(n.span,{className:"code-line",children:[" path",(0,e.jsx)(n.span,{className:"token punctuation",children:"("}),(0,e.jsx)(n.span,{className:"token string",children:"'/'"}),(0,e.jsx)(n.span,{className:"token punctuation",children:","})," BlogDetailView",(0,e.jsx)(n.span,{className:"token punctuation",children:"."}),"as_view",(0,e.jsx)(n.span,{className:"token punctuation",children:"("}),(0,e.jsx)(n.span,{className:"token punctuation",children:")"}),(0,e.jsx)(n.span,{className:"token punctuation",children:","})," name",(0,e.jsx)(n.span,{className:"token operator",children:"="}),(0,e.jsx)(n.span,{className:"token string",children:"'blog_detail'"}),(0,e.jsx)(n.span,{className:"token punctuation",children:")"}),(0,e.jsx)(n.span,{className:"token punctuation",children:","}),` `]}),(0,e.jsxs)(n.span,{className:"code-line",children:[" path",(0,e.jsx)(n.span,{className:"token punctuation",children:"("}),(0,e.jsx)(n.span,{className:"token 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`]}),(0,e.jsxs)(n.span,{className:"code-line",children:[" ",(0,e.jsxs)(n.span,{className:"token tag",children:[(0,e.jsxs)(n.span,{className:"token tag",children:[(0,e.jsx)(n.span,{className:"token punctuation",children:"<"}),"p"]}),(0,e.jsx)(n.span,{className:"token punctuation",children:">"})]}),"{{ object.body }}",(0,e.jsxs)(n.span,{className:"token tag",children:[(0,e.jsxs)(n.span,{className:"token tag",children:[(0,e.jsx)(n.span,{className:"token punctuation",children:""})]}),` `]}),(0,e.jsxs)(n.span,{className:"code-line",children:[(0,e.jsxs)(n.span,{className:"token tag",children:[(0,e.jsxs)(n.span,{className:"token tag",children:[(0,e.jsx)(n.span,{className:"token punctuation",children:""})]}),` `]})]})}),` `,(0,e.jsx)(n.p,{children:"Now start the server and check both the pages"}),` `,(0,e.jsx)(n.pre,{className:"language-bash",children:(0,e.jsx)(n.code,{className:"language-bash code-highlight",children:(0,e.jsx)(n.span,{className:"code-line",children:`python manage.py runserver `})})}),` `,(0,e.jsx)(n.p,{children:(0,e.jsx)(n.img,{src:"https://cdn.procoding.org/django/blog_list.png",alt:"blog list"})}),` `,(0,e.jsx)(n.p,{children:(0,e.jsx)(n.img,{src:"https://cdn.procoding.org/django/2020-05-26%2017_50_55-Settings.png",alt:"blog detail"})}),` `,(0,e.jsxs)(n.p,{children:["In the above image, you can observe the URL ",(0,e.jsx)(n.code,{children:"/1"})," is used that is the id of the blog which is used to uniquely identify the blog here. 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`}),(0,e.jsxs)(n.span,{className:"code-line",children:[(0,e.jsx)(n.span,{className:"token keyword",children:"class"})," ",(0,e.jsx)(n.span,{className:"token class-name",children:"Blog"}),(0,e.jsx)(n.span,{className:"token punctuation",children:"("}),"models",(0,e.jsx)(n.span,{className:"token punctuation",children:"."}),"Model",(0,e.jsx)(n.span,{className:"token punctuation",children:")"}),(0,e.jsx)(n.span,{className:"token punctuation",children:":"}),` `]}),(0,e.jsxs)(n.span,{className:"code-line",children:[" title ",(0,e.jsx)(n.span,{className:"token operator",children:"="})," models",(0,e.jsx)(n.span,{className:"token punctuation",children:"."}),"CharField",(0,e.jsx)(n.span,{className:"token punctuation",children:"("}),"max_length",(0,e.jsx)(n.span,{className:"token operator",children:"="}),(0,e.jsx)(n.span,{className:"token number",children:"128"}),(0,e.jsx)(n.span,{className:"token punctuation",children:")"}),` `]}),(0,e.jsxs)(n.span,{className:"code-line",children:[" body 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",(0,e.jsx)(n.span,{className:"token keyword",children:"return"})," reverse",(0,e.jsx)(n.span,{className:"token punctuation",children:"("}),(0,e.jsx)(n.span,{className:"token string",children:"'blog_detail'"}),(0,e.jsx)(n.span,{className:"token punctuation",children:","})," kwargs",(0,e.jsx)(n.span,{className:"token operator",children:"="}),(0,e.jsx)(n.span,{className:"token punctuation",children:"{"}),(0,e.jsx)(n.span,{className:"token string",children:"'slug'"}),(0,e.jsx)(n.span,{className:"token punctuation",children:":"})," self",(0,e.jsx)(n.span,{className:"token punctuation",children:"."}),"slug",(0,e.jsx)(n.span,{className:"token punctuation",children:"}"}),(0,e.jsx)(n.span,{className:"token punctuation",children:")"}),` `]})]})}),` `,(0,e.jsx)(n.p,{children:"Then run makemigrations and migrate command to modify the table"}),` `,(0,e.jsx)(n.pre,{className:"language-bash",children:(0,e.jsxs)(n.code,{className:"language-bash 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keyword",children:"import"}),` path `]}),(0,e.jsxs)(n.span,{className:"code-line",children:[(0,e.jsx)(n.span,{className:"token keyword",children:"from"})," slugapp",(0,e.jsx)(n.span,{className:"token punctuation",children:"."}),"views ",(0,e.jsx)(n.span,{className:"token keyword",children:"import"})," BlogListView",(0,e.jsx)(n.span,{className:"token punctuation",children:","}),` BlogDetailView `]}),(0,e.jsx)(n.span,{className:"code-line",children:` `}),(0,e.jsxs)(n.span,{className:"code-line",children:["urlpatterns ",(0,e.jsx)(n.span,{className:"token operator",children:"="})," ",(0,e.jsx)(n.span,{className:"token punctuation",children:"["}),` `]}),(0,e.jsxs)(n.span,{className:"code-line",children:[" path",(0,e.jsx)(n.span,{className:"token punctuation",children:"("}),(0,e.jsx)(n.span,{className:"token string",children:"''"}),(0,e.jsx)(n.span,{className:"token punctuation",children:","})," BlogDetailView",(0,e.jsx)(n.span,{className:"token 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punctuation",children:")"}),(0,e.jsx)(n.span,{className:"token punctuation",children:","})," name",(0,e.jsx)(n.span,{className:"token operator",children:"="}),(0,e.jsx)(n.span,{className:"token string",children:"'blog_list'"}),(0,e.jsx)(n.span,{className:"token punctuation",children:")"}),(0,e.jsx)(n.span,{className:"token punctuation",children:","}),` `]}),(0,e.jsxs)(n.span,{className:"code-line",children:[(0,e.jsx)(n.span,{className:"token punctuation",children:"]"}),` `]})]})}),` `,(0,e.jsx)(n.p,{children:"Open the blog detail page you can see that slug appears in the URL"}),` `,(0,e.jsx)(n.p,{children:(0,e.jsx)(n.img,{src:"https://cdn.procoding.org/django/2020-05-26%2018_16_11-Settings.png",alt:"add slug"})}),` `,(0,e.jsxs)(n.p,{children:["We always want our slug not to be null and always unique so modify ",(0,e.jsx)(n.code,{children:"slugapp/models.py"})]}),` `,(0,e.jsx)(n.pre,{className:"language-py",children:(0,e.jsxs)(n.code,{className:"language-py 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",(0,e.jsx)(n.span,{className:"token operator",children:"="})," models",(0,e.jsx)(n.span,{className:"token punctuation",children:"."}),"SlugField",(0,e.jsx)(n.span,{className:"token punctuation",children:"("}),"null",(0,e.jsx)(n.span,{className:"token operator",children:"="}),(0,e.jsx)(n.span,{className:"token boolean",children:"False"}),(0,e.jsx)(n.span,{className:"token punctuation",children:","})," unique",(0,e.jsx)(n.span,{className:"token operator",children:"="}),(0,e.jsx)(n.span,{className:"token boolean",children:"True"}),(0,e.jsx)(n.span,{className:"token punctuation",children:")"})," ",(0,e.jsx)(n.span,{className:"token comment",children:"# new"}),` `]}),(0,e.jsx)(n.span,{className:"code-line",children:` `}),(0,e.jsxs)(n.span,{className:"code-line",children:[" ",(0,e.jsx)(n.span,{className:"token keyword",children:"def"})," ",(0,e.jsx)(n.span,{className:"token function",children:"__str__"}),(0,e.jsx)(n.span,{className:"token punctuation",children:"("}),"self",(0,e.jsx)(n.span,{className:"token punctuation",children:")"}),(0,e.jsx)(n.span,{className:"token punctuation",children:":"}),` `]}),(0,e.jsxs)(n.span,{className:"code-line",children:[" ",(0,e.jsx)(n.span,{className:"token keyword",children:"return"})," self",(0,e.jsx)(n.span,{className:"token punctuation",children:"."}),`title `]}),(0,e.jsx)(n.span,{className:"code-line",children:` `}),(0,e.jsxs)(n.span,{className:"code-line",children:[" ",(0,e.jsx)(n.span,{className:"token keyword",children:"def"})," ",(0,e.jsx)(n.span,{className:"token function",children:"get_absolute_url"}),(0,e.jsx)(n.span,{className:"token punctuation",children:"("}),"self",(0,e.jsx)(n.span,{className:"token punctuation",children:")"}),(0,e.jsx)(n.span,{className:"token punctuation",children:":"}),` `]}),(0,e.jsxs)(n.span,{className:"code-line",children:[" ",(0,e.jsx)(n.span,{className:"token keyword",children:"return"})," reverse",(0,e.jsx)(n.span,{className:"token punctuation",children:"("}),(0,e.jsx)(n.span,{className:"token string",children:"'blog_detail'"}),(0,e.jsx)(n.span,{className:"token punctuation",children:","})," kwargs",(0,e.jsx)(n.span,{className:"token operator",children:"="}),(0,e.jsx)(n.span,{className:"token punctuation",children:"{"}),(0,e.jsx)(n.span,{className:"token string",children:"'slug'"}),(0,e.jsx)(n.span,{className:"token punctuation",children:":"})," self",(0,e.jsx)(n.span,{className:"token punctuation",children:"."}),"slug",(0,e.jsx)(n.span,{className:"token punctuation",children:"}"}),(0,e.jsx)(n.span,{className:"token punctuation",children:")"}),` `]})]})}),` `,(0,e.jsx)(n.p,{children:"After doing the changes run following commands"}),` `,(0,e.jsx)(n.pre,{className:"language-bash",children:(0,e.jsxs)(n.code,{className:"language-bash code-highlight",children:[(0,e.jsx)(n.span,{className:"code-line",children:`python manage.py makemigrations `}),(0,e.jsx)(n.span,{className:"code-line",children:`python manage.py migrate `})]})}),` `,(0,e.jsx)(n.p,{children:"We are all set with our minimal blog app now we can add the slug automatically to our blogs."}),` `,(0,e.jsx)(n.p,{children:"There are two ways to add slug automatically for our blogs"}),` `,(0,e.jsxs)(n.ol,{children:[` `,(0,e.jsx)(n.li,{children:(0,e.jsx)(n.a,{href:"#using-prepopulated-fields",children:"Using prepopulated fields"})}),` `,(0,e.jsx)(n.li,{children:(0,e.jsx)(n.a,{href:"#using-slugify-function",children:"Using slugify function"})}),` `]}),` `,(0,e.jsxs)(n.h2,{children:[(0,e.jsx)("a",{name:"using-prepopulated-fields",children:"Using Prepopulated fields"})," ",(0,e.jsx)(n.a,{href:"#using-prepopulated-fields",children:"#"})]}),` `,(0,e.jsxs)(n.p,{children:["Modify ",(0,e.jsx)(n.code,{children:"slugapp/admin.py"})," and ",(0,e.jsx)(n.code,{children:"prepopulated_fields"})," attribute to ",(0,e.jsx)(n.code,{children:"BlogAdmin"})," class"]}),` `,(0,e.jsx)(n.pre,{className:"language-py",children:(0,e.jsxs)(n.code,{className:"language-py code-highlight",children:[(0,e.jsxs)(n.span,{className:"code-line",children:[(0,e.jsx)(n.span,{className:"token keyword",children:"from"})," django",(0,e.jsx)(n.span,{className:"token punctuation",children:"."}),"contrib ",(0,e.jsx)(n.span,{className:"token keyword",children:"import"}),` admin `]}),(0,e.jsxs)(n.span,{className:"code-line",children:[(0,e.jsx)(n.span,{className:"token keyword",children:"from"})," slugapp",(0,e.jsx)(n.span,{className:"token punctuation",children:"."}),"models ",(0,e.jsx)(n.span,{className:"token keyword",children:"import"}),` Blog `]}),(0,e.jsx)(n.span,{className:"code-line",children:` `}),(0,e.jsxs)(n.span,{className:"code-line",children:[(0,e.jsx)(n.span,{className:"token keyword",children:"class"})," ",(0,e.jsx)(n.span,{className:"token class-name",children:"BlogAdmin"}),(0,e.jsx)(n.span,{className:"token punctuation",children:"("}),"admin",(0,e.jsx)(n.span,{className:"token punctuation",children:"."}),"ModelAdmin",(0,e.jsx)(n.span,{className:"token punctuation",children:")"}),(0,e.jsx)(n.span,{className:"token punctuation",children:":"}),` `]}),(0,e.jsxs)(n.span,{className:"code-line",children:[" list_display ",(0,e.jsx)(n.span,{className:"token operator",children:"="})," ",(0,e.jsx)(n.span,{className:"token punctuation",children:"["}),(0,e.jsx)(n.span,{className:"token string",children:"'title'"}),(0,e.jsx)(n.span,{className:"token punctuation",children:","})," ",(0,e.jsx)(n.span,{className:"token string",children:"'body'"}),(0,e.jsx)(n.span,{className:"token punctuation",children:"]"}),` `]}),(0,e.jsxs)(n.span,{className:"code-line",children:[" prepopulated_fields ",(0,e.jsx)(n.span,{className:"token operator",children:"="})," ",(0,e.jsx)(n.span,{className:"token punctuation",children:"{"}),(0,e.jsx)(n.span,{className:"token string",children:"'slug'"}),(0,e.jsx)(n.span,{className:"token punctuation",children:":"})," ",(0,e.jsx)(n.span,{className:"token punctuation",children:"("}),(0,e.jsx)(n.span,{className:"token string",children:"'title'"}),(0,e.jsx)(n.span,{className:"token punctuation",children:","}),(0,e.jsx)(n.span,{className:"token punctuation",children:")"}),(0,e.jsx)(n.span,{className:"token punctuation",children:"}"})," ",(0,e.jsx)(n.span,{className:"token comment",children:"# new"}),` `]}),(0,e.jsx)(n.span,{className:"code-line",children:` `}),(0,e.jsxs)(n.span,{className:"code-line",children:["admin",(0,e.jsx)(n.span,{className:"token punctuation",children:"."}),"site",(0,e.jsx)(n.span,{className:"token punctuation",children:"."}),"register",(0,e.jsx)(n.span,{className:"token punctuation",children:"("}),"Blog",(0,e.jsx)(n.span,{className:"token punctuation",children:","})," BlogAdmin",(0,e.jsx)(n.span,{className:"token punctuation",children:")"}),` `]})]})}),` `,(0,e.jsx)(n.p,{children:"Now add a new blog post and while typing the title of a blog post you may observe that slug will be automatically generated based on the title you are typing."}),` `,(0,e.jsx)(n.p,{children:(0,e.jsx)(n.img,{src:"https://cdn.procoding.org/django/2020-05-26%2018_22_38-Add%20blog%20_%20Django%20site%20admin.png",alt:"prepopulated fields"})}),` `,(0,e.jsx)(n.p,{children:"But this approach is not always good because probably you will never give admin access to all the users who are adding the blog posts. In that case, we should follow the second approach."}),` `,(0,e.jsxs)(n.h2,{children:[(0,e.jsx)("a",{name:"using-slugify-function",children:"Using slugify function"})," ",(0,e.jsx)(n.a,{href:"#using-slugify-function",children:"#"})]}),` `,(0,e.jsxs)(n.p,{children:["For this approach modify ",(0,e.jsx)(n.code,{children:"slugapp/models.py"}),". We have to change slug attribute to ",(0,e.jsx)(n.code,{children:"null=True"})," and ",(0,e.jsx)(n.code,{children:"blank=True"})," because we are sure that if user will not provide then save method will add this"]}),` `,(0,e.jsx)(n.pre,{className:"language-py",children:(0,e.jsxs)(n.code,{className:"language-py code-highlight",children:[(0,e.jsxs)(n.span,{className:"code-line",children:[(0,e.jsx)(n.span,{className:"token keyword",children:"from"})," django",(0,e.jsx)(n.span,{className:"token punctuation",children:"."}),"db ",(0,e.jsx)(n.span,{className:"token keyword",children:"import"}),` models `]}),(0,e.jsxs)(n.span,{className:"code-line",children:[(0,e.jsx)(n.span,{className:"token keyword",children:"from"})," django",(0,e.jsx)(n.span,{className:"token punctuation",children:"."}),"urls ",(0,e.jsx)(n.span,{className:"token keyword",children:"import"}),` reverse `]}),(0,e.jsxs)(n.span,{className:"code-line",children:[(0,e.jsx)(n.span,{className:"token keyword",children:"from"})," 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operator",children:"*"}),"args",(0,e.jsx)(n.span,{className:"token punctuation",children:","})," ",(0,e.jsx)(n.span,{className:"token operator",children:"**"}),"kwargs",(0,e.jsx)(n.span,{className:"token punctuation",children:")"}),(0,e.jsx)(n.span,{className:"token punctuation",children:":"})," ",(0,e.jsx)(n.span,{className:"token comment",children:"# new"}),` `]}),(0,e.jsxs)(n.span,{className:"code-line",children:[" ",(0,e.jsx)(n.span,{className:"token keyword",children:"if"})," ",(0,e.jsx)(n.span,{className:"token keyword",children:"not"})," self",(0,e.jsx)(n.span,{className:"token punctuation",children:"."}),"slug",(0,e.jsx)(n.span,{className:"token punctuation",children:":"}),` `]}),(0,e.jsxs)(n.span,{className:"code-line",children:[" self",(0,e.jsx)(n.span,{className:"token punctuation",children:"."}),"slug ",(0,e.jsx)(n.span,{className:"token operator",children:"="})," slugify",(0,e.jsx)(n.span,{className:"token punctuation",children:"("}),"self",(0,e.jsx)(n.span,{className:"token punctuation",children:"."}),"title",(0,e.jsx)(n.span,{className:"token punctuation",children:")"}),` `]}),(0,e.jsxs)(n.span,{className:"code-line",children:[" ",(0,e.jsx)(n.span,{className:"token keyword",children:"return"})," ",(0,e.jsx)(n.span,{className:"token builtin",children:"super"}),(0,e.jsx)(n.span,{className:"token punctuation",children:"("}),(0,e.jsx)(n.span,{className:"token punctuation",children:")"}),(0,e.jsx)(n.span,{className:"token punctuation",children:"."}),"save",(0,e.jsx)(n.span,{className:"token punctuation",children:"("}),(0,e.jsx)(n.span,{className:"token operator",children:"*"}),"args",(0,e.jsx)(n.span,{className:"token punctuation",children:","})," ",(0,e.jsx)(n.span,{className:"token operator",children:"**"}),"kwargs",(0,e.jsx)(n.span,{className:"token punctuation",children:")"}),` `]})]})}),` `,(0,e.jsx)(n.p,{children:"After doing these changes run makemigrations and migrate command to modify table based on the above changes."}),` `,(0,e.jsx)(n.pre,{className:"language-bash",children:(0,e.jsxs)(n.code,{className:"language-bash code-highlight",children:[(0,e.jsx)(n.span,{className:"code-line",children:`python manage.py makemigrations `}),(0,e.jsx)(n.span,{className:"code-line",children:`python manage.py migrate `})]})}),` `,(0,e.jsx)(n.p,{children:"Again, open admin interface and try adding new blog without slug and save. You will observe that a slug will be added automatically to the blog post."}),` `,(0,e.jsxs)(n.p,{children:["In this case if the user enters their own slug then their slug will be assigned to the blog post otherwise slug generated by ",(0,e.jsx)(n.code,{children:"slugify()"})," function will be assigned to it."]}),` `,(0,e.jsx)(n.p,{children:"We can do this even in case of forms also where we can allow other users to add blog posts without admin interface."}),` `,(0,e.jsxs)(n.p,{children:["This is working fine but we still have a problem i.e., if we try to add a new post with the same title then ",(0,e.jsx)(n.code,{children:"slugify()"})," will generate the same slug and then slug will not remain unique and we will get an exception.",(0,e.jsx)(n.br,{}),` `,"So, we have to improve this implementation further."]}),` `,(0,e.jsxs)(n.p,{children:["For improvement we can override ",(0,e.jsx)(n.code,{children:"save()"})," method in our model and generate slug while saving and if that slug already exists then append the ",(0,e.jsx)(n.code,{children:"id"})," of previously saved post with the same slug"]}),` `,(0,e.jsx)(n.pre,{className:"language-py",children:(0,e.jsxs)(n.code,{className:"language-py code-highlight",children:[(0,e.jsxs)(n.span,{className:"code-line",children:[(0,e.jsx)(n.span,{className:"token keyword",children:"from"})," django",(0,e.jsx)(n.span,{className:"token punctuation",children:"."}),"db ",(0,e.jsx)(n.span,{className:"token keyword",children:"import"}),` models `]}),(0,e.jsxs)(n.span,{className:"code-line",children:[(0,e.jsx)(n.span,{className:"token keyword",children:"from"})," django",(0,e.jsx)(n.span,{className:"token punctuation",children:"."}),"urls ",(0,e.jsx)(n.span,{className:"token keyword",children:"import"}),` reverse `]}),(0,e.jsxs)(n.span,{className:"code-line",children:[(0,e.jsx)(n.span,{className:"token keyword",children:"from"})," django",(0,e.jsx)(n.span,{className:"token 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interactive for user."}),` `,(0,e.jsx)(n.p,{children:"So, in our website, we should implement this by using JavaScript so that user will always be able to see the slug generated for the blog and if any change is required the user can immediately modify the slug as per requirement. This will be very much similar to prepopulated fields approach but the prepopulated fields are limited to admin interface only. That's why JavaScript will be the best option."})]})}function b(a={}){let{wrapper:n}=a.components||{};return n?(0,e.jsx)(n,Object.assign({},a,{children:(0,e.jsx)(r,a)})):r(a)}var _=b;return w(j);})(); ;return Component;

Tag: slug

Django slug tutorial: adding slug field in a django model