<pre style="margin: 0px 0px 0px 22px; white-space: pre-wrap; word-wrap: break-word; font-size: 12px !important; font-family: "Courier New" !important;">## mysite/mysite/settings.py
mysite是项目名
TEMPLATES = [
{ 'BACKEND': 'django.template.backends.django.DjangoTemplates', 'DIRS': [os.path.join(BASE_DIR, 'templates')], # templates 'APP_DIRS': True, 'OPTIONS': { 'context_processors': [ 'django.template.context_processors.debug', 'django.template.context_processors.request', 'django.contrib.auth.context_processors.auth', 'django.contrib.messages.context_processors.messages',
],
},
},
]</pre>
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这个templates文件夹是放在project的目录下面的，是项目中或者说项目中所有的应用公用的一些模板
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<pre style="margin: 0px 0px 0px 22px; white-space: pre-wrap; word-wrap: break-word; font-size: 12px !important; font-family: "Courier New" !important;">## mysite/mysite/settings.py
mysite/app1/
mysite是项目名字，app1是应用名字
TEMPLATES = [
{ 'BACKEND': 'django.template.backends.django.DjangoTemplates', 'DIRS': [os.path.join(BASE_DIR, 'app1/templates')], ## templates 'APP_DIRS': True, 'OPTIONS': { 'context_processors': [ 'django.template.context_processors.debug', 'django.template.context_processors.request', 'django.contrib.auth.context_processors.auth', 'django.contrib.messages.context_processors.messages',
],
},
},
]</pre>
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<pre style="margin: 0px 0px 0px 22px; white-space: pre-wrap; word-wrap: break-word; font-size: 14px; color: rgb(0, 0, 0); font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255); text-decoration-style: initial; text-decoration-color: initial;">这个templates是在项目下面的应用app1文件夹里面，里面是app1这个应用用到的专用模板。</pre>
#########################
总结来说说：BASE_DIR是指mysite项目的绝对路径。
<pre style="margin: 0px 0px 0px 22px; white-space: pre-wrap; word-wrap: break-word; font-size: 14px; color: rgb(0, 0, 0); font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255); text-decoration-style: initial; text-decoration-color: initial;">'DIRS': [os.path.join(BASE_DIR, 'templates')] 是指到 BASE_DIR/templates文件夹中去取模板 </pre>
<pre style="margin: 0px 0px 0px 22px; white-space: pre-wrap; word-wrap: break-word; font-size: 14px; color: rgb(0, 0, 0); font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255); text-decoration-style: initial; text-decoration-color: initial;">'DIRS': [os.path.join(BASE_DIR, 'app1/templates')] 是指导 BASE_DIR/app1/templates文件夹中去取模板</pre>
<pre style="margin: 0px 0px 0px 22px; white-space: pre-wrap; word-wrap: break-word; font-size: 14px; color: rgb(0, 0, 0); font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255); text-decoration-style: initial; text-decoration-color: initial;"> 一般来说，应该设置'DIRS': [os.path.join(BASE_DIR, 'templates')]，公用的templates需要指定。
app1专用的templates，放在app1/templates下，可以不需指定。因为在app1.views中若要指定一个专用模板，只要直接写‘app1_index.html’，Django服务器会在views文件所在的当前层（/app1）中找到templates,从而找到模板'app1_index.html'.</pre>
<pre style="margin: 0px 0px 0px 22px; white-space: pre-wrap; word-wrap: break-word; font-size: 14px; color: rgb(0, 0, 0); font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255); text-decoration-style: initial; text-decoration-color: initial;"> 指定公用的templates路径，所有apps都可以调用，方便快捷。
app专用的templates不需要指定，这样当要复用这个app的时候，不需要考虑templates路径问题。</pre>
