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begin with Django 6 - a real page II

Another feature is access to the templates, the dictionary elements, objects and arrays. Most seem obvious, but worthy of mention.

Dictionary:


In [15]: from django.template import Context, Template
In [16]: t = Template ("" "I'm osoba.nazwisko {{}}. {{Osoba.imie {{}}}}
osoba.nazwisko ....: The latest film I had {{}} osoba.liczbaZyc live "" ")
In [18]: james = {'name': 'James',' name ':' Blonde ',' liczbaZyc ': '5'}
In [19]: c = Context ({'person': james})
In [20]: t.render (c)
Out [20]: 'I'm a Blond. James Blond \\ nThe latest film I had five live '


object (of course to their own classes of objects referenced in the same way):


In [24]: from django.template import Context, Template
In [25]: import datetime
In [26]: d = datetime.date (2007, 7, 14)
In [27]: d.month
Out [27]: 7
In [28]: t = Template ('Month date.month {{}} {{year Lord date.year }}.')
In [29]: c = Context ({' date ': d})
In [30]: t.render (c)
Out [30]: 'Month of seven years Lord 2007. "
In [31]: c = Context ({'date': datetime.date (2007, 6, 14)})
In [32]: t.render (c)
Out [32]: 'Lord Month 6 years , 2007. "


array elements (upper and calling - you can call the method, but only parameterless, most spots can be used repeatedly, do not use parentheses when calling):


In [48]: from django . template import Template, Context
In [49]: t = Template ('Now with the agent's number two: {{ agenci.2.upper }}.')
In [50]: t.render (Context ({'agents': ['James', 'Bolo', 'Olo']}))
Out [50]:' Now with the agent's number two: OLO. "


As for the presentation layer, these elements are really a lot. In the event that someone was afraid that his name conflict occurs, an item search order after the period is as follows (for ab): a key in the dictionary (a ['b']), an attribute of an object (ab), calling (ab ()) , a reference to an array (a [b]). Still
word about handling exceptions in methods. Can cause that the exception was ignored (obviously not a good way of handling each exception.) The Django template happens when the exception object is to set a special variable: silent_variable_failure = True
can also protect you from calling methods (for example, one that has side effects):


def write (self ): = True
zapis.alters_data


Another important element is to preserve the templates at the time to appeal to non-existent variable. If it is not reconfigured Django is incorrect references are ignored (empty string). It is worth remembering, if only because the case-sensitive.

To Build A Home Cinematic Orchestra Piano Sheet

Latest Django in Ubuntu

Today there is a new Django in Ubuntu (7.04, Feisty Fawn) - Version 0.96-1, which is in accordance with the currently released version. Nice because it saves a few problems (such as that described my short URL s). This will also be modeled accurately on DjangoBook.

Belkİn F6d4050 Lİnux Drİver

I return to the start of the news

decided to start again, read the news, of course, continue treating the RSS as the primary source of information. But I apologized the good old Usenet and NNTP. He encouraged me to show Michael Rutkowski in telewizorni remembered as once discussed on the pages pl.rec.sport.koszykowka eg Tim Duncan, which is indeed a lot said yesterday MR. I immediately turned tina (best ever NNTP reader) and ordered the list of groups. So far, only python, denunciations and basketball. I've brought this effect, I found an interesting link: Set Python films, including Django (only installation). There are also some other interesting categories.

Difference Between Intermediate And Senior Gloves

Django 5 - a real page

In another approach, I want to generate "Real" part. Now you have to use a template system offered by Django. Finally, after he is. Once it is. From reading the fourth chapter DB learned that in templates: access to variables is obtained by writing {{varname}} , code blocks are marked as {% instructions for making %} and we have access to the filters (using the tries to check and show time soon. Another curiosity that offer templates used in Django is able to generate a template object by specifying a string containing the template (except that of course is the ability to specify the file containing the template, but it is standard). I start the classic tests: . / Manage.py shell and then : from django.template import Template, then
t = Template ("I'm {{name}}. {{Name}} {{name}}")
and print t which will only show us where the t. object to what they write in DB templates that are pre-compiled to an internal form, ready to generate the page. Therefore, the error in the template (eg t = Template ('{% user%} had errors ") ), revealed at the time of the appointment of a template object to life. Generating the template takes place in a context that is represented by an object class Context . In this short presentation code (the code directly from your sticky, I thought that this form of presentation will be better, of course, write what is after the colon):

In [27]: django.template from import Context, Template
In [28]: t = Template ("I'm {{name}}. {{name}} {{name}}")
In [29]: c = Context ({' Name: "Blond", "name": "James"})

In [30]: t.render (c)
Out [30]: 'I'm Blond. James Blond '




course we see what happens, as context will have defined a variable:


In [33]: from django.template import Context, Template
In [34] : t = Template ("I'm {{surname }}.{{ name}} {{name}}")
In [35]: c = Context ({"name": "Blond"})

In [36]: t.render (c)
Out [36]: 'I'm Blond.Blond'



As you can see , nothing bad will not happen. Generated an empty string. In my opinion, is a plus (CakePHP generate, if I remember correctly, the error in such cases). Page designer can so easily extend it with new elements that relate to variables not yet defined and not wait for the programmer.

last element in this entry is to enable interactive testing wielolinijkowych templates (useful information for those who have not benefited Python), multiline strings placed just between the triple quotes "" long string "" "
:

In [39]: from django.template import Context, Template
In [40]: t = Template ("" "I'm {{surname }}.{{ name}} {{name}}
....: The latest film I had {{}} liczbaZyc live

....: How about it "" ")
In [42]: c = Context ({" name ":" Blonde "," name ":" James "," liczbaZyc ": 5}) In [43]: t.render (c)
Out [43]: 'I'm Blond.JamesBlond \\ nIf I have a new movie 5 live \\ nco you so '





Examples include repetition (Imports, re-definitions of objects) only to show the full picture of what is happening in the program. During one session, of course, there is no need to import multiple classes or creating the same template.
DjangoBook fourth chapter is quite big, so its contents extend to the few entries in which I gradually expanded information about the templates.