Thank you! It works. :)
On Aug 23, 3:40 pm, Anthony <abasta...@gmail.com> wrote:
> In index(), the value of 'image' ends up being the URL
> '/cavityflow/default/cavityflow_plot', which is not the URL of the image you
> want to load. Instead, that URL itself ultimately just returns another URL,
> '/cavityflow/static/images/cavityflow.gif'. So, your img src attribute is
> pointing to a string representation of the URL of the image, not the image
> itself.
>
> Instead, just have the index function create the image in /static/images,
> and use the image URL as the src attribute, like this:
>
> def index():
> [snip]
> if form.accepts(request.vars, session, keepvalues=True):
> [snip]
> cavityflow_plot() # this creates the image and saves it in the
> static folder
> image=URL('static','images/cavityflow.gif')
> return dict(form=form, image=image)
> Note, as is, the cavityflow_plot() function is accessible as a URL. Since
> you are only using it internally and probably do not need/want to it be
> accessible via URL, you should either give it at least one argument or
> precede its name with a double underscore (controller functions that take
> arguments or start with a double underscore are not publicly exposed --
> seehttp://web2py.com/book/default/chapter/04#Dispatching).
>
> Anthony
>
> On Tuesday, August 23, 2011 6:02:51 AM UTC-4, Henri Heinonen wrote:
> > Ok.
>
> > This is the default/index.html:
> > {{extend 'layout.html'}}
> > <h1>cavityflow</h1>
> > {{=form}}
> > {{if image:}}
> > <hr />
> > <h2>Constants</h2>
> > <p>These are the constants that were used during the simulations.</p>
> > {{=BEAUTIFY(request.vars)}}
> > <h2>Figure</h2>
> > <img src="{{=image}}" alt="loading..."/>
> > {{pass}}
>
> > This is the default.py:
> >http://pastebin.com/VGE69RG1
>
> > Does this work for you?
>
> > On Aug 22, 1:10 pm, Henri Heinonen <henri.h...@gmail.com> wrote:
> > > default/index.html:
> > > {{extend 'layout.html'}}
> > > <h1>cavityflow</h1>
> > > {{=form}}
> > > {{if image:}}
> > > <hr />
> > > <h2>Figure</h2>
> > > <img src="{{=image}}" alt="loading..."/>
> > > {{pass}}
>
> > > default.py:
> > > def index():
> > > form=FORM('nx:', INPUT(_name='nx', _value=20.0), BR(), 'ny:',
> > > INPUT(_name='ny', _value=20.0), BR(), 'nt:', INPUT(_name='nt',
> > > _value=100.0), BR(), 'nit:', INPUT(_name='nit', _value=100.0), BR(),
> > > 'dt:', INPUT(_name='dt', _value=0.01), BR(), 'vis:',
> > > INPUT(_name='vis', _value=0.1), BR(), 'rho:', INPUT(_name='rho',
> > > _value=1.0), BR(), INPUT(_type='submit',_value='Make figure'))
>
> > > image=None
> > > if form.accepts(request.vars, session, keepvalues=True):
> > > session.flash = 'Form accepted.'
> > > session.nx=float(request.vars.nx)
> > > session.ny=float(request.vars.ny)
> > > session.nt=float(request.vars.nt)
> > > session.nit=float(request.vars.nit)
> > > session.dt=float(request.vars.dt)
> > > session.vis=float(request.vars.vis)
> > > session.rho=float(request.vars.rho)
> > > image=URL(r=request,f='cavityflow_plot')
> > > return dict(form=form, image=image)
>
> > > def cavityflow_plot():
> > > return cavityflow(session.nx, session.ny, session.nt, session.nit,
> > > session.dt, session.vis, session.rho)
>
> > > def cavityflow(nx, ny, nt, nit, dt, vis, rho):
> > > ...*clip* *clip* ... # Here the application will make one hundred png
> > > images.
> > > os.system("convert *.png cavityflow.gif")
> > > # What do I need to add in here in order to return the cavityflow.gif
> > > onto the webpage of my application?
>
> > > The question is in the source code as a comment line.
>
> > > Yours sincerely, Henri Heinonen.
>
>
