On Nov 10, 10:19 pm, Andrew <[email protected]> wrote:
> Hi,
>
> I'm currently learning pylons (and python) and would like some help on
> a project, I believe I have the right approach but I am not sure of
> how the MVC would be structured.
>
> ==What I am trying to do==
> Let me explain a bit more of what I am trying to do.
> Suppose there is a database, exampledb, and I would like to be able to
> pull data out of that database (I am using SQLAlchemy and python
> MySQL), and display that data on a web page.
>
> At the moment, I am able to display values I pull from the exampledb
> database on the console (using a simple controller script below) but I
> need some help using it with MVC and displaying on a webpage.
>
> == What I Understand ==
> - I understand the controller will call on the models or the views and
> return data to the model (please correct if this is wrong).

The controller manipulates the model and returns data to the *view*.

In Pylons, it might be more correct to say that the controller
interprets a request from the user, performs some kind of action
(which may or may not involve the model), and returns a rendered
representation of the result (could be HTML or JSON or XML, etc).


> - The model is where I can put the database connection (for example,
> like the script below) and query and store the values into variables.


> - Then I would use a MAKO template to display those variables on a
> webpage, but I am not sure of how to assign the variables or define
> the function in the model/controller.
>
> Can someone assist me with this please? Perhaps provide an example
> would be helpful!

I would suggest going through one of the various Pylons tutorials.
This one might help, as it appears to address all your questions:
http://wiki.pylonshq.com/display/pylonscookbook/Making+a+Pylons+Blog


> == Example of Controller.py ==
> from sqlalchemy import *

I know this is only an example, but please don't `import *` in real
code.


> engine = create_engine('mysql://user:p...@localhost/exampledb
> charset=utf8&use_unicode=0')
> connection = engine.connect()
>
> result = engine.execute("select field from exampledb")
> for row in result:
>         print "name:", row['name']
> result.close()
>
> :::Note:::this only prints it to console

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