When I try to print my Ember.js page application, templates aren't displayed on the sheet (it only displays a big empty white section). Any explanations or solutions?
Thank you
You will need to use traditional media queries to implement the ability to print from your Ember app. As far as I am aware there, no one has created an ember addon to support print functionality at this time. (See here where it doesn't look like anyone has a good suggestion for a similar question.) I can imagine it would be difficult to support generic functionality for printing that looks decent across apps, which may explain why no one has attempted to create an add on at this time.
Related
I'm currently working on a simple scroll website with nothing really difficult (I could almost use plain html/css/javascript but it's a bit of practicing and I will maybe add a blog). And as it is simple I was wondering how to do it properly with Django.
So here is my question, I have a homepage template that is actually the website and I don't really get how I split my different part in different apps.
For exemple I have a contact form, do I need to split it in another app and then include it in the basic template ? I want to add a galery with image in a database, do I create an app for that ?
And the other question that goes along is how do I code an app that is not returning httpresponse but just html to put it in another template and do I still need views ? I would like to do a bit like a standard form in django where you do :
form.as_p or form.as_table
so maybe:
galery.as_slideshow
So my questions are quite novice and open but someone could give me some reading to get going, I would be really happy !
This is a question a lot of people struggle with and it seems like there are a lot of varying opinions out there.
I've found that the best way to really determine the appropriate answer for each case is to really distill the feature into individual requirements and group them by feature sets while keeping an eye out for additional uses outside of the project actively being worked on.
There is nothing which says you can't build your project to include a single app containing all of the modules you would need. Doing so seems like it would make your development easier initially right? So, the question to ask then is "What if I want to reuse (insert feature set here) in another unrelated project a year from now after I've already forgotten about the weird stuff I did to make it work originally?". Asking yourself that question forces you to think about your features in a much broader context and I think 99% of the time you will realize that a "Contact Form" requirement can actually become quite complex and really should be split up into at least one separate app (i.e. User Creation, Profile Management, Email Subscription, etc...)
Here is a link to a video about this very topic which I found to be useful in figuring out my way through this question:
https://www.youtube.com/watch?v=A-S0tqpPga4
I know this is not really a hard-line answer to your question but I hope it helps point you in the right direction.
Let's say I'm writing a complex site in django with wikis, forums, ... or writing my own apps that I intend to reuse from different sites.
I really want to create, for example, a wiki page that has a forum at the bottom, or reuse my previously written wiki app with a different graphical layout.
What is the best way to structure my app to allow this kind of reuse?
So far, I have been giving apps their own urls in urls.py. This however does not work if I want to combine multiple apps together in a single page.
Additionally, most of the apps I found online come with their own templates, which has the full html, and do not separate the logic of creating / preparing a context from that of handling a request and generating a reply.
What is the best practice here? What do you do? edit the templates that come from applications you download online? refactor them to fit in your application?
what should I do for my own applications? structure them so they have a method to get the context, and a method to render it?
Django hasn't great support out of the box to component-oriented architectures. I find this problematic some times too. You'll face to problems here.
Architecture
Code
Architecture: As Django is not component oriented, all the apps aren't component oriented neither. The designers and coders for those apps haven't thought about that. So they've just built "views" to interface with their apps. You'll need to get something more "pluggable".
Code: Once you decide to build that, you'll have to find what support you have for that. Most Django apps are pretty well coded, so you won't have much code in views, but abstracted in other places. That way you could reuse that code and build your own components.
Example: Suppose you're working with a third-party Wiki app. That wiki has a view to display highest ranked Tags and other view to create a wiki entry. If the code is good enough (that I'm assuming it is because Django has a pretty good community), you could refactor that to use components. The view to create an entry must be using some Form, that you can plug in your own site. And the view to get highest ranked tags probably uses some utility function, or some Tag manager's method. In that case you could refactor it to your own needs.
Hope it helps.
I've been writing my own pagination logic that would be similar to the Ember.SortableMixin but with support for paging. Does anything like this exist yet in the pre 1.0 build?
If this doesn't exist is a pull request welcome around this specific behavior? It's my guess that 90% of apps out there need simple pagination/sorting and having a mixin built in would cut out almost 60+ lines of code.
Thank you in advance
Update
I replied to another "ember/ pagination" question and my full blown (working example) can be found at the below
Ember pagination full example
Here's a simple one that I've used: https://gist.github.com/1559628
It's by one of the top ember contributors.
i've just come across emberjs-pageable.
it looks quite nice at first glance, but i'm not sure if it's still maintained.
I've been using this one https://github.com/mathieul/page_wrapper
Tailored for use with Rails but could easily be adopted.
Really happy with it so far.
I am doing some web data classification task and was thinking if I could get the co-ordinates of html elements as they would appear on a web-browser without taking into consideration any css or javascript being referred in the web page.
My language of programming is c++ and the need results for a couple million of pages, so it has to be fast. I know there is a Microsoft COM component which renders the page in a web browser control and then can be queried for position of different html tags. But this is not suitable in my case as it first renders the whole page which takes up a lot of time.
So as I found out, there are open-source layout engines WebKit, Gecko that can probably be used for this. But that's a huge piece of code and I need someone to direct me to the right classes or right modules to look into or any previous/similar work someone has done previously. Also, please let me know what you guys think is a good choice if I want to customize the existing code for use with multiple threads to make it faster.
Thanks
Generally, you would find that different page rendering engines do render the html in their own way and the results will differ.
The thing is that if you stick to any concrete browser engine, what you are to do is somehow bringing this engine into your project and using engine's interface to retrieve these coordinates. Kind of a tough task though, simply because you'll have to read a lot of documentation and crawl through thousands of files.
I think that right approach would be posting this task in some place, that is specific for the page rendering engine you've chosen. (gecko/webkit/...)
If you prefer sticking to something MS-specific, guess it's gonna be easier, but can't help you with something like class names or code chunks that you want to see. Probably somebody else could guide you in this case.
For quite a long time now, I've been trying to write and have been in search of "a really good" CRUD application. Don't get me wrong - I didn't say "The ultimate" CRUD application. Just one that could be rated 1st class.
What I'm saying is: Please don't respond to this plea with an answer like "Well, every situation is different..."
Q: Is there a blog post or something in the Adobe documentation that shows CRUD on a one-to-many relationship (Header/Detail), that uses web standards css (instead of tables), that uses best practices (CF9 has changed so many things now: scripted components, ORM), that uses the latest UI techniques (jQuery or some of the built-in AJAX features of CF9), that has a nice front-end (a nice looking header and background along with some pretty buttons)?
I know that's a lot to ask, but such is my quest.
A good example of a one-to-many relationship is the city/state xml files built into the Spry examples. There are 23,000 cities in the sample xml files, so I think that's better than just using random data.
I'm not really sure what you're asking, but I just want to respond to a couple of points in your question (this is more a comment than an answer, but since SO is stupidly limited in this, I'll put it here instead.)
that uses web standards css (instead of tables),
There is no "css instead of tables" - they are two distinct and compatible things!
CSS describes visual aspects of a document, whilst tables markup tabular data.
If you're displaying tabular data, then tables is exactly what you should be using, and you can use CSS to make it look more exciting than the plain styles that tables come in.
Since you're asking for a CRUD app, odds are you are going to be wanting to display tabular data so should be using tables.
(The common mistake people make is not understanding the nature of the web, and using tables to apply grid layouts to documents, when they should be using strucuted semantic markup instead.)
that uses best practices (CF9 has changed so many things now:
scripted components, ORM)
Scripted components are not a best practise!
They are an alternative syntax (for people that prefer having non-descriptive braces everywhere) they do not offer anything you can't already do.
i would strongly suggest you check out cfwheels. read the documentation, it's built for doing such crud applications and has an amazing set of features and will save you a lot of time. as for the interface, there are many jquery plugins out there that can handle this. i suggest looking at ajaxrain and find a plugin you like