I am trying to render the file home.html. The file exists in my project, but I keep getting jinja2.exceptions.TemplateNotFound: home.html when I try to render it. Why can't Flask find my template?
from flask import Flask, render_template
app = Flask(__name__)
#app.route('/')
def home():
return render_template('home.html')
/myproject
app.py
home.html
You must create your template files in the correct location; in the templates subdirectory next to the python module (== the module where you create your Flask app).
The error indicates that there is no home.html file in the templates/ directory. Make sure you created that directory in the same directory as your python module, and that you did in fact put a home.html file in that subdirectory. If your app is a package, the templates folder should be created inside the package.
myproject/
app.py
templates/
home.html
myproject/
mypackage/
__init__.py
templates/
home.html
Alternatively, if you named your templates folder something other than templates and don't want to rename it to the default, you can tell Flask to use that other directory.
app = Flask(__name__, template_folder='template') # still relative to module
You can ask Flask to explain how it tried to find a given template, by setting the EXPLAIN_TEMPLATE_LOADING option to True. For every template loaded, you'll get a report logged to the Flask app.logger, at level INFO.
This is what it looks like when a search is successful; in this example the foo/bar.html template extends the base.html template, so there are two searches:
[2019-06-15 16:03:39,197] INFO in debughelpers: Locating template "foo/bar.html":
1: trying loader of application "flaskpackagename"
class: jinja2.loaders.FileSystemLoader
encoding: 'utf-8'
followlinks: False
searchpath:
- /.../project/flaskpackagename/templates
-> found ('/.../project/flaskpackagename/templates/foo/bar.html')
[2019-06-15 16:03:39,203] INFO in debughelpers: Locating template "base.html":
1: trying loader of application "flaskpackagename"
class: jinja2.loaders.FileSystemLoader
encoding: 'utf-8'
followlinks: False
searchpath:
- /.../project/flaskpackagename/templates
-> found ('/.../project/flaskpackagename/templates/base.html')
Blueprints can register their own template directories too, but this is not a requirement if you are using blueprints to make it easier to split a larger project across logical units. The main Flask app template directory is always searched first even when using additional paths per blueprint.
I think Flask uses the directory template by default. So your code should be like this
suppose this is your hello.py
from flask import Flask,render_template
app=Flask(__name__,template_folder='template')
#app.route("/")
def home():
return render_template('home.html')
#app.route("/about/")
def about():
return render_template('about.html')
if __name__=="__main__":
app.run(debug=True)
And you work space structure like
project/
hello.py
template/
home.html
about.html
static/
js/
main.js
css/
main.css
also you have create two html files with name of home.html and about.html and put those files in templates folder.
If you must use a customized project directory structure (other than the accepted answer project structure),
we have the option to tell flask to look in the appropriate level of the directory hierarchy.
for example..
app = Flask(__name__, template_folder='../templates')
app = Flask(__name__, template_folder='../templates', static_folder='../static')
Starting with ../ moves one directory backwards and starts there.
Starting with ../../ moves two directories backwards and starts there (and so on...).
Within a sub-directory...
template_folder='templates/some_template'
I don't know why, but I had to use the following folder structure instead. I put "templates" one level up.
project/
app/
hello.py
static/
main.css
templates/
home.html
venv/
This probably indicates a misconfiguration elsewhere, but I couldn't figure out what that was and this worked.
If you run your code from an installed package, make sure template files are present in directory <python root>/lib/site-packages/your-package/templates.
Some details:
In my case I was trying to run examples of project flask_simple_ui and jinja would always say
jinja2.exceptions.TemplateNotFound: form.html
The trick was that sample program would import installed package flask_simple_ui. And ninja being used from inside that package is using as root directory for lookup the package path, in my case ...python/lib/site-packages/flask_simple_ui, instead of os.getcwd() as one would expect.
To my bad luck, setup.py has a bug and doesn't copy any html files, including the missing form.html. Once I fixed setup.py, the problem with TemplateNotFound vanished.
I hope it helps someone.
Check that:
the template file has the right name
the template file is in a subdirectory called templates
the name you pass to render_template is relative to the template directory (index.html would be directly in the templates directory, auth/login.html would be under the auth directory in the templates directory.)
you either do not have a subdirectory with the same name as your app, or the templates directory is inside that subdir.
If that doesn't work, turn on debugging (app.debug = True) which might help figure out what's wrong.
I had the same error turns out the only thing i did wrong was to name my 'templates' folder,'template' without 's'.
After changing that it worked fine,dont know why its a thing but it is.
You need to put all you .html files in the template folder next to your python module. And if there are any images that you are using in your html files then you need put all your files in the folder named static
In the following Structure
project/
hello.py
static/
image.jpg
style.css
templates/
homepage.html
virtual/
filename.json
When render_template() function is used it tries to search for template in the folder called templates and it throws error jinja2.exceptions.TemplateNotFound when :
the file does not exist or
the templates folder does not exist
Create a folder with name templates in the same directory where the python file is located and place the html file created in the templates folder.
Another alternative is to set the root_path which fixes the problem both for templates and static folders.
root_path = Path(sys.executable).parent if getattr(sys, 'frozen', False) else Path(__file__).parent
app = Flask(__name__.split('.')[0], root_path=root_path)
If you render templates directly via Jinja2, then you write:
ENV = jinja2.Environment(loader=jinja2.FileSystemLoader(str(root_path / 'templates')))
template = ENV.get_template(your_template_name)
After lots of work around, I got solution from this post only,
Link to the solution post
Add full path to template_folder parameter
app = Flask(__name__,
template_folder='/home/project/templates/'
)
My problem was that the file I was referencing from inside my home.html was a .j2 instead of a .html, and when I changed it back jinja could read it.
Stupid error but it might help someone.
Another explanation I've figured out for myself
When you create the Flask application, the folder where templates is looked for is the folder of the application according to name you've provided to Flask constructor:
app = Flask(__name__)
The __name__ here is the name of the module where application is running. So the appropriate folder will become the root one for folders search.
projects/
yourproject/
app/
templates/
So if you provide instead some random name the root folder for the search will be current folder.
I'm working on a node.js application to interact with the Twilio API. I have a problem getting my files to associate in the way I expected. My file directory structure looks like this
myapproot
-public
---form.js
-routes
---index.js
-views
---index.html
-app.js
-config.js
-server.js
In index.html, I conclude the page with the following script declaration:
<script type="text/javascript" src="../public/form.js"></script>
But when I load up the page, I get the following error:
GET: http://localhost:1337/public/form.js 404 (not found)
If I follow the path-link provided by VS code, it shows that js file, but it's not getting loaded into my view. Is there a mistake with my path declaration?
Essentially, what that command is doing is this:
<script type = 'Text/JavaScript' src = 'http://localhost:1337/public/form.js'>
So, what I'd suggest that you try is to set up the server-side code to handle requests to that directory on your server.
Here's the file structure i am using
-----+root
----------+app
--------------+common
--------------+config
--------------+controllers
--------------------------+rootPage.js
----------+public
--------------+rootPage.jade
----------+server.js
Here's my jade file
doctype
html(lang = 'en')
head
title PlanUrNight
meta(charset = 'utf-8')
link(rel = 'stylesheet' href = '//maxcdn.bootstrapcdn.com/bootswatch/3.3.0/flatly/bootstrap.min.css')
link(src='//maxcdn.bootstrapcdn.com/bootstrap/3.3.1/js/bootstrap.min.js' rel = 'stylesheet')
link(rel = 'stylesheet' href = './css/rootPage.css')
body
nav.navbar.navbar-inverse(role= 'navigation')
.navbar-header
button.navbar-toggle.collapsed( type='button', data-toggle='collapse', data-target='#navbar-inverse', aria-expanded='false', aria-controls='navbar')
span.sr-only Toggle navigation
span.icon-bar
span.icon-bar
span.icon-bar
a.navbar-brand(href='#') PlanUrNight
.collapse.navbar-collapse#navbar-inverse
ul.nav.navbar-nav
li: a( href="#") Home
.collapse.navbar-collapse.navbar-right
.facebook-login-wrapper
a.btn.btn-primary(href='/auth/facebook') Facebook
span.fa.fa-facebook
.container-fluid
.row
.col-md-8.col-md-offset-2.main-container
.images-container
img.drink(src='img/drinking.png')
img.dance(src='img/couple_dancing.png')
img.club(src='img/club_ball.png')
.row
.col-md-2.col-md-offset-6.search-container
span.glyphicon.glyphicon-search
.input-group
input.form-control(type='text', placeholder='Search')
script( src='//ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js' type='text/javascript')
script( src='./controllers/rootPage.js' type='text/javascript')
I have tried multiple variations of the source, but it just doesn't seem to be loading the JavaScript file. Each time I get an error log in my console, saying Error 404: rootPage.js not found
I am using express with node, and in my server.js file I have the following line for serving static files
app.use(express.static(__dirname+'/public'));
So what am I doing wrong here? Does the usage of the app.use line above change the root of my directory in some way so that I need to change the file path to access my JS files?
Or is there a different way to load JS files in Jade?
Your file organization is a bit wonky. Based on the one middleware you showed us, all files in the /public folder will be served as-is, but no static files elsewhere will be.
Generally, jade files that you're rendering with server logic are in a /views folder which is not served directly, but instead available to server side route handlers or controller logic to call res.render with.
So if you have clientside JS files you want to serve as static content you need them either under the /public folder or create more static middleware calls to point to whatever folder they are in.
/** Edit after first two comments **/
Sorry for not providing more examples, etc before, I was on my phone.
Wonky is perhaps a harsh term and I'm sorry. What I meant was it doesn't really match the standard layouts I've seen. There's a few ways to do it, but most small(ish) Express projects at least start out with the template generated by the express command line tool.
In that case, all the stuff in your ./root/app directory would be server-side code that doesn't get directly served to the client ever. Most of the sites I've seen (exception being the default template from the MEAN.js project) follow a pattern something like this:
app
- errors
- models
- controllers
- routes
- views
public
- css
- js
- img
package.json
server.js
Sometimes there's a lib folder that's a peer of app where you put utility stuff. 'views' is where all the jade templates live.
Everything in the public folder is exposed via a single middleware like you did:
app.use(express.static(__dirname+'/public'));
Everything else will not get served as static files. If you have a clientside JS structure that uses an MVC pattern, you'd then have model, view, and controller folders under ./public/js
The MEAN.js folks take a different approach, making each logical component of the app (e.g. user management, etc) into a module and then organizing each module as folders that look like ./<module name>/server and ./<module name>/client with structure for models, controllers, etc, under each of those depending on if it's server code or client code.
You're correct on how to add more more static middleware.
Try
script( src='./app/controllers/rootPage.js' type='text/javascript')
I just want to ask how to use the jquery custom builder since i separate the folder of jquery custom builder to the Login Folder. Here is the folder path for the jquery custom builder
And here is for the Login Folder
I have tried this kind of syntax for getting the Directory of the js file and to other files to but it doesn't seems to work.
<script src = "../htdocs/WebSite/jslib/jquery-ui-1.11.4.custom/jquery-ui.js"></script>
i hope you can help me with this since i'm just starting jquery i also read the guide for using jquery i follow the instruction but it's still the same.
Thanks
Where is the html file that imports jquery script tag? It seems like just path problem. Usually, URI paths are based on app server root. There are so many ways managing URI, but XAMPP might let file resource paths show up same as URI paths.
When app server root is located on c:/foo/bar/:
c:/foo/bar/lib/jquery.js -> http://localhost:xxxx/lib/jquery.js
c:/foo/bar/index.html -> http://localhost:xxxx/index.html
So in index.html, import resource as this way.
<script src="lib/jquery.js"></script>
I am working with a Rails app in which I am trying to specify a json file path inside my javascript. But, it seems like I am not being able to get the file as I should get. I tried both : absolute and relative path to that file. But, nothing worked for me. I know about Rails.root which I used in my rake task to specify a file path before. But, my need this time is to specify a file path inside JavaScript in a Rails app. I am trying to locate the flare.json file. I put that in my app/assets/data/flare.json and tried this :
<script type="text/javascript">
d3.json("/app/assets/data/flare.json", function(error, root) {
.....
}
</script>
But, I get the error in JavaScript console :
GET `http://localhost:3000/app/assets/data/flare.json 404 (Not Found)`
Anyone could please help me which is the correct way of specifying a file path in javaScript in Rails app ?
So let me get this right, you want to load a json file with d3? If this is the case, consider this: The in-browser javascript environment doesn't have access to file resources on the server side. You can load them by specifically exposing files via the server and then do AJAX requests to retrieve them with javascript. So for example:
Move the file to the public directory within your app and then change the javascript to
d3.json("/flare.json", function(error, root) {
.....
}
Put this in config/application.rb
# Enable the asset pipeline
config.assets.enabled = true
config.assets.paths << "#{Rails.root}/app/assets/something"