librelist archives

Re: [flask] Upgrading to 0.7

From:

Adam Patterson

Date:

2011-06-29 @ 16:09

Don't specify the template_folder in the Blueprint().

Flask knows to use the templates/ folder by default


Just remove
On Wed, Jun 29, 2011 at 10:54 AM, Charlie Evett <charlieevett@litl.com>wrote:

> Oh, here's how the blueprint gets added:
>
>     from jiffy.admin.login import admin_base
>     app.register_blueprint(admin_base, url_prefix="/admin")
>
>
> On Wed, Jun 29, 2011 at 11:17 AM, Charlie Evett <charlieevett@litl.com>wrote:
>
>> Here's the blueprint declaration:
>>
>> admin_base = Blueprint('admin_base', __name__,
>> template_folder='templates')
>>
>> Here's the view function:
>>
>> @admin_base.route('/')
>> @login_required
>> def index():
>>     user = None
>>     if 'logged_in_user' in session:
>>         user = Admin.find_by_email(session['logged_in_user'])
>>      return render_template('admin_base/index.html', user=user)
>>
>> and here's the error:
>>
>> ...
>>   File
>> 
"/Users/charlieevett/code/jiffy-web/virtualenv/lib/python2.6/site-packages/flask/app.py",
>> line 1041, in dispatch_request
>>     return self.view_functions[rule.endpoint](**req.view_args)
>>   File "/Users/charlieevett/code/jiffy-web/jiffy/admin/login.py", line 19,
>> in decorated_function
>>     return f(*args, **kwargs)
>>   File "/Users/charlieevett/code/jiffy-web/jiffy/admin/login.py", line 30,
>> in index
>>     return render_template('admin_base/index.html', user=user)
>>   File
>> 
"/Users/charlieevett/code/jiffy-web/virtualenv/lib/python2.6/site-packages/flask/templating.py",
>> line 122, in render_template
>>     return _render(ctx.app.jinja_env.get_template(template_name),
>>   File
>> 
"/Users/charlieevett/code/jiffy-web/virtualenv/lib/python2.6/site-packages/jinja2/environment.py",
>> line 716, in get_template
>>     return self._load_template(name, self.make_globals(globals))
>>   File
>> 
"/Users/charlieevett/code/jiffy-web/virtualenv/lib/python2.6/site-packages/jinja2/environment.py",
>> line 690, in _load_template
>>     template = self.loader.load(self, name, globals)
>>   File
>> 
"/Users/charlieevett/code/jiffy-web/virtualenv/lib/python2.6/site-packages/jinja2/loaders.py",
>> line 115, in load
>>     source, filename, uptodate = self.get_source(environment, name)
>>   File
>> 
"/Users/charlieevett/code/jiffy-web/virtualenv/lib/python2.6/site-packages/flask/templating.py",
>> line 61, in get_source
>>     raise TemplateNotFound(template)
>> TemplateNotFound: admin_base/index.html
>>
>>
>> On Wed, Jun 29, 2011 at 10:46 AM, Adam Patterson <fakeempire@gmail.com>wrote:
>>
>>> I have the same setup as you and I'm not having any issues. I did not
>>> have to remove the module/blueprint name.
>>>
>>> Could you provide more information, like what error you're actually
>>> getting?
>>>
>>>
>>> On Wed, Jun 29, 2011 at 9:32 AM, Charlie Evett <charlieevett@litl.com>wrote:
>>>
>>>> I'm in the middle of upgrading to 0.7. The upgrade script worked, but
>>>> one change is causing lots of issues is the change of template syntax.
>>>>
>>>> I had a lot of this kind of thing all over the place:
>>>>
>>>>     return render_template('admin_base/index.html', user=user)
>>>>
>>>> where 'admin_base' is the old name of the module but is now the name of
>>>> the Blueprint declared as:
>>>>
>>>>     admin_base = Blueprint('admin_base', __name__)
>>>>
>>>> also everywhere I have inherited templates declared it is failing:
>>>>
>>>>     {% extends "admin_base/base.html" %}
>>>>
>>>> looks like I have to remove the module names everywhere. Is that the
>>>> easiest way?
>>>>
>>>
>>>
>>
>

Hi,

On 6/29/11 6:09 PM, Adam Patterson wrote:
> Don't specify the template_folder in the Blueprint().
> 
> Flask knows to use the templates/ folder by default
That is incorrect.  Please check the documentation for the correct
behavior.  Each blueprint can have a template folder and the contents of
this templates folder are added to the **searchpath**.  That means you
need to be explicit in this folder and add another folder in there:


admin = Blueprint('admin', __name__, templates='templates')

@admin.route('/')
def index():
    return render_template('admin/index.html')

This means you need this structure:

yourapplication/
  admin/
    templates/
      admin/
        index.html

And *not*

yourapplication/
  admin/
    templates/
      index.html


Regards,
Armin

>
> > Flask knows to use the templates/ folder by default
> That is incorrect.  Please check the documentation for the correct
> behavior.


Hey Armin!

I don't have to specify the 'templates' folder in my app BUT my project
layout is different from what you described.

I use this. In this scenario flask knows to use the templates folder. Unless
I'm missing something

application/
  views/
    admin.py
  templates/
     admin/
        index.html

Hi,

On 6/29/11 6:36 PM, Adam Patterson wrote:
> I don't have to specify the 'templates' folder in my app BUT my project
> layout is different from what you described.
> 
> I use this. In this scenario flask knows to use the templates folder.
> Unless I'm missing something
That of course works just as well.  In fact since 0.7 those two are
doing exactly the same with the small difference that blueprint provided
template paths have a lower priority than the one from the actual
application.


Regards,
Armin

If I remove then I get the TemplateNotFound exception.

The only thing that works is -- no template name + specify template_folder
in constructor (also needs 'static_folder' since the template references a
static file.):

admin_base = Blueprint('admin_base', __name__, template_folder='templates',
static_folder="static")
...
@admin_base.route('/')
@login_required
def index():
    user = None
    if 'logged_in_user' in session:
        user = Admin.find_by_email(session['logged_in_user'])
    return render_template('index.html', user=user)



On Wed, Jun 29, 2011 at 12:09 PM, Adam Patterson <fakeempire@gmail.com>wrote:

> Don't specify the template_folder in the Blueprint().
>
> Flask knows to use the templates/ folder by default
>
>
> Just remove
> On Wed, Jun 29, 2011 at 10:54 AM, Charlie Evett <charlieevett@litl.com>wrote:
>
>> Oh, here's how the blueprint gets added:
>>
>>     from jiffy.admin.login import admin_base
>>     app.register_blueprint(admin_base, url_prefix="/admin")
>>
>>
>> On Wed, Jun 29, 2011 at 11:17 AM, Charlie Evett <charlieevett@litl.com>wrote:
>>
>>> Here's the blueprint declaration:
>>>
>>> admin_base = Blueprint('admin_base', __name__,
>>> template_folder='templates')
>>>
>>> Here's the view function:
>>>
>>> @admin_base.route('/')
>>> @login_required
>>> def index():
>>>     user = None
>>>     if 'logged_in_user' in session:
>>>         user = Admin.find_by_email(session['logged_in_user'])
>>>      return render_template('admin_base/index.html', user=user)
>>>
>>> and here's the error:
>>>
>>> ...
>>>   File
>>> 
"/Users/charlieevett/code/jiffy-web/virtualenv/lib/python2.6/site-packages/flask/app.py",
>>> line 1041, in dispatch_request
>>>     return self.view_functions[rule.endpoint](**req.view_args)
>>>   File "/Users/charlieevett/code/jiffy-web/jiffy/admin/login.py", line
>>> 19, in decorated_function
>>>     return f(*args, **kwargs)
>>>   File "/Users/charlieevett/code/jiffy-web/jiffy/admin/login.py", line
>>> 30, in index
>>>     return render_template('admin_base/index.html', user=user)
>>>   File
>>> 
"/Users/charlieevett/code/jiffy-web/virtualenv/lib/python2.6/site-packages/flask/templating.py",
>>> line 122, in render_template
>>>     return _render(ctx.app.jinja_env.get_template(template_name),
>>>   File
>>> 
"/Users/charlieevett/code/jiffy-web/virtualenv/lib/python2.6/site-packages/jinja2/environment.py",
>>> line 716, in get_template
>>>     return self._load_template(name, self.make_globals(globals))
>>>   File
>>> 
"/Users/charlieevett/code/jiffy-web/virtualenv/lib/python2.6/site-packages/jinja2/environment.py",
>>> line 690, in _load_template
>>>     template = self.loader.load(self, name, globals)
>>>   File
>>> 
"/Users/charlieevett/code/jiffy-web/virtualenv/lib/python2.6/site-packages/jinja2/loaders.py",
>>> line 115, in load
>>>     source, filename, uptodate = self.get_source(environment, name)
>>>   File
>>> 
"/Users/charlieevett/code/jiffy-web/virtualenv/lib/python2.6/site-packages/flask/templating.py",
>>> line 61, in get_source
>>>     raise TemplateNotFound(template)
>>> TemplateNotFound: admin_base/index.html
>>>
>>>
>>> On Wed, Jun 29, 2011 at 10:46 AM, Adam Patterson <fakeempire@gmail.com>wrote:
>>>
>>>> I have the same setup as you and I'm not having any issues. I did not
>>>> have to remove the module/blueprint name.
>>>>
>>>> Could you provide more information, like what error you're actually
>>>> getting?
>>>>
>>>>
>>>> On Wed, Jun 29, 2011 at 9:32 AM, Charlie Evett <charlieevett@litl.com>wrote:
>>>>
>>>>> I'm in the middle of upgrading to 0.7. The upgrade script worked, but
>>>>> one change is causing lots of issues is the change of template syntax.
>>>>>
>>>>> I had a lot of this kind of thing all over the place:
>>>>>
>>>>>     return render_template('admin_base/index.html', user=user)
>>>>>
>>>>> where 'admin_base' is the old name of the module but is now the name of
>>>>> the Blueprint declared as:
>>>>>
>>>>>     admin_base = Blueprint('admin_base', __name__)
>>>>>
>>>>> also everywhere I have inherited templates declared it is failing:
>>>>>
>>>>>     {% extends "admin_base/base.html" %}
>>>>>
>>>>> looks like I have to remove the module names everywhere. Is that the
>>>>> easiest way?
>>>>>
>>>>
>>>>
>>>
>>
>

My apologies,

In my render_template() I specify the folder

render_template('admin_base/my_template.html')

On Wed, Jun 29, 2011 at 11:19 AM, Charlie Evett <charlieevett@litl.com>wrote:

> If I remove then I get the TemplateNotFound exception.
>
> The only thing that works is -- no template name + specify template_folder
> in constructor (also needs 'static_folder' since the template references a
> static file.):
>
> admin_base = Blueprint('admin_base', __name__, template_folder='templates',
> static_folder="static")
> ...
> @admin_base.route('/')
> @login_required
> def index():
>     user = None
>     if 'logged_in_user' in session:
>         user = Admin.find_by_email(session['logged_in_user'])
>     return render_template('index.html', user=user)
>
>
>
> On Wed, Jun 29, 2011 at 12:09 PM, Adam Patterson <fakeempire@gmail.com>wrote:
>
>> Don't specify the template_folder in the Blueprint().
>>
>> Flask knows to use the templates/ folder by default
>>
>>
>> Just remove
>> On Wed, Jun 29, 2011 at 10:54 AM, Charlie Evett <charlieevett@litl.com>wrote:
>>
>>> Oh, here's how the blueprint gets added:
>>>
>>>     from jiffy.admin.login import admin_base
>>>     app.register_blueprint(admin_base, url_prefix="/admin")
>>>
>>>
>>> On Wed, Jun 29, 2011 at 11:17 AM, Charlie Evett <charlieevett@litl.com>wrote:
>>>
>>>> Here's the blueprint declaration:
>>>>
>>>> admin_base = Blueprint('admin_base', __name__,
>>>> template_folder='templates')
>>>>
>>>> Here's the view function:
>>>>
>>>> @admin_base.route('/')
>>>> @login_required
>>>> def index():
>>>>     user = None
>>>>     if 'logged_in_user' in session:
>>>>         user = Admin.find_by_email(session['logged_in_user'])
>>>>      return render_template('admin_base/index.html', user=user)
>>>>
>>>> and here's the error:
>>>>
>>>> ...
>>>>   File
>>>> 
"/Users/charlieevett/code/jiffy-web/virtualenv/lib/python2.6/site-packages/flask/app.py",
>>>> line 1041, in dispatch_request
>>>>     return self.view_functions[rule.endpoint](**req.view_args)
>>>>   File "/Users/charlieevett/code/jiffy-web/jiffy/admin/login.py", line
>>>> 19, in decorated_function
>>>>     return f(*args, **kwargs)
>>>>   File "/Users/charlieevett/code/jiffy-web/jiffy/admin/login.py", line
>>>> 30, in index
>>>>     return render_template('admin_base/index.html', user=user)
>>>>   File
>>>> 
"/Users/charlieevett/code/jiffy-web/virtualenv/lib/python2.6/site-packages/flask/templating.py",
>>>> line 122, in render_template
>>>>     return _render(ctx.app.jinja_env.get_template(template_name),
>>>>   File
>>>> 
"/Users/charlieevett/code/jiffy-web/virtualenv/lib/python2.6/site-packages/jinja2/environment.py",
>>>> line 716, in get_template
>>>>     return self._load_template(name, self.make_globals(globals))
>>>>   File
>>>> 
"/Users/charlieevett/code/jiffy-web/virtualenv/lib/python2.6/site-packages/jinja2/environment.py",
>>>> line 690, in _load_template
>>>>     template = self.loader.load(self, name, globals)
>>>>   File
>>>> 
"/Users/charlieevett/code/jiffy-web/virtualenv/lib/python2.6/site-packages/jinja2/loaders.py",
>>>> line 115, in load
>>>>     source, filename, uptodate = self.get_source(environment, name)
>>>>   File
>>>> 
"/Users/charlieevett/code/jiffy-web/virtualenv/lib/python2.6/site-packages/flask/templating.py",
>>>> line 61, in get_source
>>>>     raise TemplateNotFound(template)
>>>> TemplateNotFound: admin_base/index.html
>>>>
>>>>
>>>> On Wed, Jun 29, 2011 at 10:46 AM, Adam Patterson <fakeempire@gmail.com>wrote:
>>>>
>>>>> I have the same setup as you and I'm not having any issues. I did not
>>>>> have to remove the module/blueprint name.
>>>>>
>>>>> Could you provide more information, like what error you're actually
>>>>> getting?
>>>>>
>>>>>
>>>>> On Wed, Jun 29, 2011 at 9:32 AM, Charlie Evett <charlieevett@litl.com>wrote:
>>>>>
>>>>>> I'm in the middle of upgrading to 0.7. The upgrade script worked, but
>>>>>> one change is causing lots of issues is the change of template syntax.
>>>>>>
>>>>>> I had a lot of this kind of thing all over the place:
>>>>>>
>>>>>>     return render_template('admin_base/index.html', user=user)
>>>>>>
>>>>>> where 'admin_base' is the old name of the module but is now the name
>>>>>> of the Blueprint declared as:
>>>>>>
>>>>>>     admin_base = Blueprint('admin_base', __name__)
>>>>>>
>>>>>> also everywhere I have inherited templates declared it is failing:
>>>>>>
>>>>>>     {% extends "admin_base/base.html" %}
>>>>>>
>>>>>> looks like I have to remove the module names everywhere. Is that the
>>>>>> easiest way?
>>>>>>
>>>>>
>>>>>
>>>>
>>>
>>
>