You can think of request.args as a Python list. You can find out more about Python lists here http://docs.python.org/2/tutorial/introduction.html#lists and here http://docs.python.org/2/tutorial/datastructures.html#more-on-lists
You can think of request.vars as a Python dictionary. Look here: http://docs.python.org/2/tutorial/datastructures.html#dictionaries The Web2py manual also has an introductory chapter on Python http://web2py.com/books/default/chapter/29/02 On Tuesday, April 2, 2013 6:20:21 AM UTC-4, Niphlod wrote: > > > > On Tuesday, April 2, 2013 10:57:57 AM UTC+2, [email protected] wrote: >> >> Thank you for your reply again :) >> Okay, i just did a google search on the term "foobar", and haha i have >> been wondering why does it appear anywhere! >> anyway, hmm, it seems clearer with your examples. so if i were to use >> args, like you said, to turn on bulb 1, i will put it as something like: >> >> <a href = "{{=URL('test', args =['bulb', '1', 'on'])}}"><img src >> ="/Comfort2/static/images/on.jpg" width ="75" height="75"></a> ? >> >> in default.py, i put this? >> >> if request.args(0)=='1': >> serialport.write("\x03O!0101\x0D") # serial command to turn the >> light on. >> >> > [bulb, 1, on] "translates" to > request.args(0) = bulb > request.args(1) = 1 > etc etc etc (i.e. numbering starts from 0) > > >> and if using vars: >> >> <a href = "{{=URL('test', vars = dict(bulb='1', state='on' ))}}"><img >> src ="/Comfort2/static/images/on.jpg" width ="75" height="75"></a> ? >> >> if request.vars ={'bulb':1, 'state' :on} >> serialport.write("\x03O!0101\x0D") # serial command to turn the >> light on. >> > > better to be a little less specific > if request.vars.bulb == '1' and request.vars.state == 'on': > > >> >> what about the following URL? what will it do? >> >> <a href = "{{=URL('test', args =['bulb', '1'], vars = >> dict(state='on'))}}"><img src ="/Comfort2/static/images/on.jpg" width ="75" >> height="75"></a> >> >> > request.args(0) = bulb > request.args(1) = 1 > request.vars.state = 'on' > > all of this can be discovered if you turn the response.generic_patterns on > and you do (for testing purposes) a simple > def test(): > return dict() > > In the generic view there's included "response toolbar" that you can use > to "inspect" what's going on (e.g., what request.args is specifically) > Or, if you have a view already, include at the top > {{=response.toolbar()}} > to show it. > > >> And all the above are in the same function 'test', so can i omit 'test' >> in the URL? >> > > See the book on how to use the URL() function. > http://web2py.com/books/default/chapter/29/04#URL > > URL() without arguments "points" to the app/controller/function that > generated it. > > >> >> thanks again! >> >> On Tuesday, April 2, 2013 4:28:50 PM UTC+8, Niphlod wrote: >>> >>> /app/default/test >>> points to executing your test() inside the controller named default.py >>> args and vars are, in respect >>> - args : /app/default/test/*1/2/3* >>> - vars : /app/default/test?*foo=bar&foo=bar2&hello=world* >>> >>> To sum up, args are fine if you want cleaner urls, but you can't put >>> whatever you want on them (imagine something like /app/default/test/* >>> รนร +:\*/ >>> , not a "smart" way to pass garbles on the url, but, e.g., something >>> like /app/default/test/*1/on* where *1 *is the "bulb" number and *on*is the >>> "action" you want to do seems fine). >>> "Vars" on the other hand allow more flexibility, "garbled" parameters >>> are allowed...maybe the nicest "feature" is that if you need a single >>> variable holding multiple values "vars" parses them automatically (e.g. >>> "turn on bulb 1 and bulb 2" can be done with /app/default/test?* >>> bulb=1&bulb=2&action=on*) . Urls are not "clean" as with "args" but the >>> functionality is the same. >>> >>> Bottomline, use what you feel appropriate, either one would do just >>> fine. >>> >>> On Tuesday, April 2, 2013 9:56:25 AM UTC+2, [email protected] wrote: >>>> >>>> Hi guys! Sorry but I still do not quite understand after reading the >>>> chapters about "Dispatching" and "URL". i guess my programming foundation >>>> isn't that strong... and i have problem understanding without referring to >>>> examples. >>>> >>>> Here is my situation and i would like to get a general idea on how to >>>> solve the problem. May be my idea was wrong so please correct me :) >>>> >>>> I have just successfully connect a device to my Raspberry Pi, with >>>> web2py as the webserver on Raspberry pi. Currently, i have created a home >>>> page using the template, and there is a "Login" button on it. When i click >>>> on the image (button), it directs me to default/test.html. the device gets >>>> the login information and turns on and off the testlight. >>>> >>>> in default/index.html: >>>> >>>> <a href = "{{=URL >>>> <https://10.0.0.132/examples/global/vars/URL>(c='default', >>>> f='test')}}"><img src ="/Comfort2/static/images/login.jpg" width ="128" >>>> height="69"></a> >>>> >>>> >>>> in default.py: >>>> >>>> def test(): >>>> import serial >>>> import time >>>> response <https://10.0.0.132/examples/global/vars/response>.flash=T >>>> <https://10.0.0.132/examples/global/vars/T>("welcome home!") >>>> time.sleep(1) >>>> >>>> serialport= serial.Serial("/dev/ttyAMA0", 9600, timeout=0.5) #opening >>>> the port >>>> >>>> >>>> serialport.write("\x03LI1234\x0D") #write a serial command to log into >>>> the device >>>> reply=serialport.readlines(1) >>>> print reply >>>> time.sleep(1) >>>> serialport.write("\x03O!0101\x0D") #turn on a testlight >>>> time.sleep(2) >>>> serialport.write("\x03O!0100\x0D") #turn off a testlight >>>> return dict() >>>> >>>> >>>> However, i would like to separate it into a few tasks. So, after >>>> pressing the "login" button, it will only login and direct me to test.html >>>> with 2 buttons (Turn on light and turn off light). if i press on the turn >>>> on light button, the testlight will turn on and same for the other one. I >>>> would like all these to be under one function because the commands can >>>> only >>>> be sent when it is logged into the device. (if it is under another >>>> function, i will need to login again.) So do i need to use args and vars >>>> at >>>> this point? >>>> >>>> I do not really understand what is args and vars and how are they used. >>>> the information in the chapters taught me that >>>> request.args = ['x', 'y', 'z'] >>>> request.vars={'p':1, 'q':2} >>>> >>>> but what are x,y,z,p, q, 1 and 2? under what conditions are they >>>> declared and where do they appear? >>>> >>>> Another question: can i display a jQuery keypad using web2py? >>>> >>>> My progress using cherrypy is slightly more ahead than web2py. i am >>>> sure i can transfer my work in cherrypy over to web2py... but i must get >>>> the whole concept clear... please help me. >>>> sorry that i sound very noob.... but much thanks to everyone for your >>>> patience and guidance! :) >>>> >>> -- --- You received this message because you are subscribed to the Google Groups "web2py-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. 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