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  • 'NoneType' object has no attribute 'day'

    - by Asinox
    Hi guy, i dont know where is my error, but Django 1.2.1 is give this error: 'NoneType' object has no attribute 'day' when i try to save form from the Administrator Area models.py from django.db import models from django.contrib.auth.models import User class Editorial(models.Model): titulo = models.CharField(max_length=250,help_text='Titulo del editorial') editorial = models.TextField(help_text='Editorial') slug = models.SlugField(unique_for_date='pub_date') autor = models.ForeignKey(User) pub_date = models.DateTimeField(auto_now_add=True) activa = models.BooleanField(verbose_name="Activa") enable_comments = models.BooleanField(verbose_name="Aceptar Comentarios",default=False) editorial_html = models.TextField(editable=False,blank=True) def __unicode__(self): return unicode(self.titulo) def get_absolute_url(self): return "/editorial/%s/%s/" % (self.pub_date.strftime("%Y/%b/%d").lower(), self.slug) class Meta: ordering=['-pub_date'] verbose_name_plural ='Editoriales' def save(self,force_insert=False, force_update=False): from markdown import markdown if self.editorial: self.editorial_html = markdown(self.editorial) super(Editorial,self).save(force_insert,force_update) i dont know why this error, thanks guys sorry with my English

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  • Amazon S3 Change file download name

    - by Daveo
    I have files stored on S3 with a GUID as the key name. I am using a pre signed URL to download as per S3 REST API I store the original file name in my own Database. When a user clicks to download a file from my web application I want to return their original file name, but currently all they get is a GUID. How can I achieve this? My web app is in salesforce so I do not have much control to do response.redirects all download the file to the web server then rename it due to governor limitations. Is there some HTML redirect, meta refresh, Javascript I can use? Is there some way to change the download file name for S3 (the only thing I can think of is coping the object to a new name, downloading it, then deleting it). I want to avoid creating a bucket per user as we will have a lot of users and still no guarantee each file with in each bucket will have a unique name Any other solutions?

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  • agility of asp.net MVC

    - by Hellnar
    Hello I am wondering how agile (fast to develop yet stable) asp.net MVC compared to frameworks using dynamic languages such as Django or Ruby on Rails. I will be happy if you share you experiance in the name of development speed (assuming each language/framework is known at a similar level) Things I love about Django Fast model design thanks to ORM Good template system Not too hard to deploy Easy to extend Lots of free apps to plugin and great documentation Thanks

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  • Flex: How to most effectively tavere a table column

    - by Maik
    I have a table "template" which is used in various "instances". All instances have checkboxes in the second column (for record-delete). What would be the most effective way of traversing the table and check if at least one checkbox is selected (to enable a "delete" button)? Thanks! Maik

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  • Is it worth moving from stored procedures to linq ?

    - by Josef
    I'm looking at standardizing programming in an organisaiton. Half uses stored procedures and the other half Linq. From what i've read there is still some debate going on on this topic. My concern is that MS is trying to slip in it's own proprietry query language 'linq' to make SQL redundant. If a few years back microsoft had tried to win customers from oracle and sybase with their MSSQL database and stated that it didn't use SQL by their own proprietry query langues ie linq. I doubt many would have switched. I believe that is exactly what is happening now by introducting it into the applicaiton business layer. I have used MS for many years but there is one gripe that I have with them and that is that they change their direction a lot. By a lot I mean new releases of .net, silverlight etc are more than 30% different from previous version. So by the time you become productive a new release is on the way. As things stand now a web developer using .net would need to know either vb.net or c#, xml, xaml,javascript,html, sql and now linq. That doesn't make for good productivity in my books. My concern is that once we all start using linq MS will start changing it between releases. and it will become an ever changing landscape. I believe that 'linq to sql' has already been deprecated. At leas with SQL we are dealing with a more stable and standardized language. Are we looking at a programming revolution or a marketing campaign? As far as I know other languages like Cobol have stayed the same for years. A cobol program from 20 years ago could pick up todays code and start working on it. Could a Vb3 person work on a modern .net web app ? Would these large changes need to be made if the underlying original foundation had been sound ? I worry about following MS shaking roadmap with it's deadends and double backs. are there any architects out there who feel the same ? regards Josef

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  • Whats the point of STL?

    - by Jonathan D
    I've been programming c++ for about a year now and when i'm looking about i see lots of references to STL. Can some one please tell me what it does? and the advantages and disadvantageous of it? thanks

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  • Setting style of ContextMenu on subitems

    - by thedesertfox
    I have created a custom style and template for MenuItem and ContextMenu, and for my first level, that works great, but whenever I add a SubMenu item, the style of that ContextMenu reverts back to the default style. How can I make sure that item uses my custom style? I've tried using the <;Style TargetType="ContextMenu" Key="{x:Type ContextMenu}" syntax as well, and it doesn't seem to be overriding it either.

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  • Howto start writing iPad applications?

    - by Lothar
    I know Objective-C from Desktop Apple Programming. But i want to jump on the iPad bandwagon and start developing some small edutainment applets. Is the iPad API the same as iPhone just with more power? Do i need to join the iPhone developer program and does it still start with $100. Is there any iPad emulator yet?

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  • XCode 3.2 - make emulator to open in iPhone mode

    - by Dmitry Khalatov
    I've installed XCode 3.2 on top of Snow Leopard 10.6.2. When trying to "build and run" an application created from XCode template, the emulator is always opened in iPad mode. When choosing "iPhone" from the emulator menu, it changes its look but next time it is opened as iPad again. How to cause the emulator to run in iPhone mode ?

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  • list box items context menu WPF

    - by Eran
    hey guys, I have list box that contains UserControl as item template the user control contains few text blocks in a grid, the thing is that I want to add context menu to my user control that will show on the list item right click but currently only right clicking the textbox inside the user control triggers the context menu appearance clicking the spaces between those textboxes triggers nothing, any idea about how can I trigger the context menu from the container list box? Thanks Eran

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  • Difference between Property and Method

    - by Asim Sajjad
    Which one is better to use when it come to return value for example public int EmployeeAge { get{return intEmployeeAge}; } And public int EmployeeAge() { return intEmployeeAge; } Which one is better and why? And what is best programming practice to use when we have secnario like above ?

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  • Attribute References in Python

    - by Jeune
    I do Java programming and recently started learning Python via the official documentation. I see that we can dynamically add data attributes to an instance object unlike in Java: class House: pass my_house = House() my_house.number = 40 my_house.rooms = 8 my_house.garden = 1 My question is, in what situations is this feature used? What are the advantages and disadvantages compared to the way it is done in Java?

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  • How does an "extern C" declaration work?

    - by samoz
    I'm taking a programming languages course and we're talking about the "extern C" declaration. How does this declaration work at a deeper level other than "it interfaces C and C++"? How does this affect the bindings that take place in the program as well?

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  • Would Ruby on Rails be appropriate for this Foreign Language project?

    - by Lynne Overesch-Maister
    I'm a Spanish professor & computer groupie. About 15 years ago, I authored in HyperCard a series of verb conjugation programs that are now completely out of date with respect to System OS X. I would like to redo these programs myself because I had a lot of fun doing them last time (mostly I coded while my son played in Leaps and Bounds, you know, one of those places where parents take their kids & let them run wild through the tubes...). Colleagues have mentioned using Flash, Director, and various other solutions, but I saw a presentation on RoR at our SIDLIT conference today, and was inspired. I will be parsing and comparing strings (and there are other features on top of that, but that is the main one), "adding" strings relationally indexed in some kind of database(s). It will also have to handle various foreign characters (accents, upside down question marks, etc.). On top of the main process of the program, it will have to provide a practice vs. test mode, keep track of specific answers as well as totals right/wrong, and print a report. Would this be either easier and/or more efficiently done in RoR than in other languages. I am pretty sure that it will work on a Microsoft server, right? Because I think that is where most of our stuff is. I would be programming either on a Mac or a PC, whichever you think is easier. So, in summary, is RoR the way for me to go with this project? If I have some (little) experience programming in Hypercard and C, should I be able to pick RoR up fairly quickly? What things will I need to start (I already saw something called Redhills foreign key migration plugin, which I assume would be beneficial)? I still have my old scripts from hypercard, however what I would really like to do is to combine all six of my former tense-specific programs into one larger program. I figure that it wouldn't be too hard to reference the individual tenses in some way--could that be a class? Many thanks for any help you can give me on this forum.

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  • How to get HDD volume id programmatically?

    - by Leandro
    Hi, everybody. I`m programming in obj-c using cocoa, and I would like to discover the HDD volume id programmatically.I know that I will probably need to do this in pure C and than use it in my app, but even in the C language I could not find any answers. Please help.Thanks!

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  • developing sms application in iPhone??

    - by hemant
    Hello, i am new to iPhone programming and i was thinking of developing an sms application through which user can send and receive sms inside my application similar to iPhone own message application.i think apple doesn't provide any API regarding accessing sms inbox?? is there any other way around it??

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  • When to use Python special methods?

    - by bodacydo
    I know that classes can implement various special methods, such as __iter__, __setitem__, __len__, __setattr__, and many others. But when should I use them? Can anyone describe typical scenarios when I would want to implement them and they would simplify programming in Python? Thanks, Boda Cydo.

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  • ForEach loop: Output something different on every second result

    - by Wade D Ouellet
    I have two for each loops and I am trying to output something different for each second result: foreach ($wppost as $wp) { $wp_title = $wp->post_title; $wp_date = strtotime($wp->post_date); $wp_slug = $wp->post_name; $wp_id = $wp->ID; // Start Permalink Template $wp_showurl = $wp_url; $wp_showurl = str_replace("%year%", date('Y', $wp_date), $wp_showurl); $wp_showurl = str_replace("%monthnum%", date('m', $wp_date), $wp_showurl); $wp_showurl = str_replace("%day%", date('d', $wp_date), $wp_showurl); $wp_showurl = str_replace("%hour%", date('H', $wp_date), $wp_showurl); $wp_showurl = str_replace("%minute%", date('i', $wp_date), $wp_showurl); $wp_showurl = str_replace("%second%", date('s', $wp_date), $wp_showurl); $wp_showurl = str_replace("%postname%", $wp_slug, $wp_showurl); $wp_showurl = str_replace("%post_id%", $wp_id, $wp_showurl); // Stop Permalink Template $wp_posturl = $blog_address . $wp_showurl; echo '<li><a href="'.$wp_posturl.'" title="'.$wp_title.'">'.$wp_title.'</a></li>'; } For this one I want it to echo li class="even" instead of just li for each second result. I think this will have to be changed to a for loop to accomplished this but I am not sure how that is done without breaking it. Exact same for this one: if(is_array($commenters)) { foreach ($commenters as $k) { ?><li><?php if($ns_options["make_links"] == 1) { $url = ns_get_user_url($k->poster_id); if(trim($url) != '') { echo "<a href='" . $url . "'>"; } } if($ns_options["make_links"] == 2) { $url = ns_get_user_profile($k->poster_id); echo "<a href='" . $url . "'>"; } $name = $bbdb->get_var(" SELECT user_login FROM $bbdb->users WHERE ID = $k->poster_id"); echo ns_substr_ellipse($name, $ns_options["name_limit"]); if(trim($url) != '' && $ns_options["make_links"] == 1) { echo "</a>"; } if($ns_options["make_links"] == 2) { echo "</a>"; } if ($ns_options["show_posts"] == 1) { echo " (" . $k->num_posts . ")\n"; } echo $ns_options["end_html"] . "\n"; unset($url); } } else { ?></li><?php } Thanks, Wade

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  • Django + Postgres: How to specify sequence for a field

    - by Giovanni Di Milia
    I have this model in django: class JournalsGeneral(models.Model): jid = models.AutoField(primary_key=True) code = models.CharField("Code", max_length=50) name = models.CharField("Name", max_length=2000) url = models.URLField("Journal Web Site", max_length=2000, blank=True) online = models.BooleanField("Online?") active = models.BooleanField("Active?") class Meta: db_table = u'journals_general' verbose_name = "Journal General" ordering = ['code'] def __unicode__(self): return self.name My problem is that in the DB (Postgres) the name of the sequence connected to jid is not journals_general_jid_seq as expected by Django but it has a different name. Is there a way to specify which sequence Django has to use for an AutoField? In the documentation I read I was not able to find an answer.

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  • How do you access/configure summaries/snippets in Django Haystack

    - by mlissner
    I'm working on getting django-haystack set up on my site, and am trying to have snippets in my search results roughly like so: Title of result one about Wikis ...this special thing about wiki values is that...I always use a wiki when I walk...snippet value three talks about wikis too...and here's another snippet value about wikis. I know there's a template tag for highlighting, but how do you generate the snippets themselves? I know Solr generates these, but I can't figure out how to get them from Haystack.

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