I am working on a site with Express.js, and like it very much. I have it operating stably, but would like users to be able to add pages to the site (via a form, where it will have set fields, or via uploading a jade file). Preferably I would also like a moderation queue. Failing this, how can I add pages without having to add an entry to index.js for the route every time? If I add lots of pages, won't this make it slow?
Sorry for the wall of questions, and thanks in advance for any help!
EDIT: It's been requested that I narrow the query, so here goes:
I would like to add a web interface to Express.js that allows users to fill in a form and add a page to the website under a certain path. I would like a sort of "moderation queue" where I approve pages before they go live. I cannot find any sort of information on this use case. How do I do it? Thanks.
First and foremost, you will need to get yourself a database where the moderation queue can sit and wait to be processed. The specific methodology of how to structure this database, and how to integrate this data into pages that can be delivered will depend on your choice of database and view engine.
After you have set up this system, you can use express's route parameters so that you do not have to write out all the possible routes into your scripts. Your express app can take the route parameters, look up the relevant data in your database, integrate this into a page using your view engine, and have express deliver this page to your client.
I would recommend giving express's guide on routing a thorough read as well as doing some more research into databases, and view engines.
Related
I have database with users (username, password, games (array, storing only ids of games)). From separate module, I fetch data about games. On my webpage, user profile is templated with just user object. I want that info about games to be dynamic - user can add/delete those games dynamically, without reloading the page. Database integration is easy, I'd do this with AJAX, but should I send game data also through it? I haven't worked so far with Angular, but from what I heard, maybe its best way? Or maybe forget about templating, do everything with Angular?
Im using node.js, mangodb, express.
You can "mix" angular with node template engines like ejs or jade based on express and have the main content rendered with the response and the rest of the content can be loaded or altered later using ajax and a REST API interface.
You well gain good performance as well as good SEO optimization since the "static" content is already on the page when it returns from the server
In your case
I'm suggestion you have a node express server with a few endpoints
[GET] /user/:id - will render a static html page with the user details
[GET] /user/games - will give a JSON response with the user games and added to the view using angular
I'd like to create a site with Angular (I'm new), but also want to be able to have different "views" be cachable in the search engines and have their own URL routes. How would I achieve this with Angular, or is best not to use it?
Enable pushState in Angular with $locationProvider.html5Mode(true); so that you have real URLs and make sure that, when the URL is requested by the client, you deliver the complete page for that URL from the server (and not a set of empty templates that you populate with JS).
When a link is followed, you'll go through an Angular view and update the existing DOM (while changing the URL with pushState) but the initial load should be a complete page.
This does mean duplicating effort (you need client and server side versions of the code for building each page). Isomorphic JS is popular for dealing with that issue.
If you want to expose Angular views to search engines and other bots, I suggest using an open source framework that we developed at Say Media. It uses node.js to render the pages on the server when it detects a bot vs a real user. You can find it here:
https://github.com/saymedia/angularjs-server
I would suggest not using different routes, however, as most search engines will penalize you for having duplicate content on multiple urls. And while you might think they would just hit the bot version of your site, they are getting more sophisticated about crawling single page app like sites. I would be cautious about duplicate routes for the same content.
Good Luck!
I am trying to set up a simple set up as follows:
Have a mobile app with a page consisting of 4 lines (4 html paragraph lines (I am using phonegap)).
I want to use a web page from which I will input the data for those 4 lines. This information is sent to a server and that server transfers this information to that app on that mobile phone. Now, those 4 lines on the mobile phone is filled with the new information.
Similarly user inputs information on another page consisting of 10 lines of li (list). This information is again sent to the server and to the web page where the information is displayed.
I can almost feel the "internet police guys" getting all hyped and ready to vote this question down. But please understand that I have been on this site and various forums desperate to find a tutorial to guide me to do this and not able to find.
I am trying to use ajax to perform this setup. Confused how I would be using the php file. Information such as password n username is going to go in that php file to connect to the server. But php is a server side script thus needs to sit at the public_html folder. How do I use the php file from my desktop? Write a separate javascript to access it?
It is the concept that is confusing me. I am familiar with html,js,php.
I would appreciate any guidance or maybe a link to a tutorial which would help me to do the concept I mentioned. Thanks for listening.
You will need to create an API using PHP. This API is uploaded to your server and is considered "RESTful". Google a tutorial for what fits your needs. You can set all sorts of rules in this API such as requiring any requests to have an ID or access token.
Since you are using PhoneGap, your HTML and JS files rest on the device, so you will need to allow permissions to your API from anywhere. For this you will have to speak to your host provider about unless you know how to configure it yourself (some providers restrict what you want to do by default as an extra security precaution against XSS attacks).
Next, you can either use jQuery, or you can write some AJAX calls by writing the JavaScript yourself.
The most efficient way for this to work is to send JSON objects to and from the API. You will include a "command" in the JSON when you are sending from your app. On the PHP side, you will retrieve this command and use the rest of the data included in your JSON object to process the request. Your API will need to encode a JSON object for return (such as a user's profile information).
Here is a basic PHP API tutorial to get you going that explains some of the features of a RESTful API: PHP API
Here is a simple AJAX function (you will probably want to make this much more modular): AJAX
As broad as your question is, it seems like the best/easiest thing for you to do will be for you to first create a PHP webpage that will access a SQL database to perform the record updating. Actually, this should serve all of your needs for your mobile users assuming you don't need push notifications for live data updates.
I am assuming, since you are using phone gap, that you are more comfortable with web languages. After you get the webpage fully operational, then you should start building your app based on that exact same SQL database. With mobile app development there are a lot more "what if's" (what if the phone rings, what if the app is running in the background, what if there is no cellular service, etc...)
It is always easier to start with what you know and build on that, rather than starting with a new development platform and troubleshooting as problems arise.
I am constructing a standalone application that is comprised of HTML, CSS and JS files. The data that is being used by the application is being loaded from an XML file.
I, however, require the application to use a local database - something that would allow me to load, create and edit the data in this database using Javascript. Then package up the application and send it on (I am using webapp-xul-wrapper for this).
Could anybody give me some advice on how I could achieve this? The majority of solutions I have looked at use local storage or only keep the db table data for that particular session or require server side code.
To clarify, my application has a settings page that I would like to allow to edit my data and then keep that data persistent so that when the application is opened again the data is intact. Furthermore, if I was to send the application to someone else - that data would also be intact. Ideally my app would take its data from a physical file that could be passed around.
I hope this question makes sense!
Many thanks,
G.
I actually ended up using a packager called TideSDK (http://www.tidesdk.org/) which supports SQLLite out of the box and also seems to render my applications layout much clearer.
Many thanks!
I'm having issues trying to figure out how to generate on server side a PDF from a javascript-heavy webpage that is served from Tomcat (the application is Pentaho CE). The content is a dashboard that responds to user interaction. Pentaho (the application) replaces divs dynamically with various content through AJAX calls. I'd like to export to pdf whatever state the user has the dashboard at. There are no restrictions on what I can put on the server, but I need to avoid having the client install anything.
I've taken a look at this, along with a bunch of other google-fu:
JSP/HTML Page to PDF conversion
wkhtmltopdf seems to be a popular choice; before I start banging my head against it, I have a few questions:
Can wkhtmltopdf handle going to password protected jsps where authentication is handled by the application? Would the dynamically loaded divs break it?
Is there a way to perhaps return the client view to the server for processing? I read about screen capturing...
Another option that could work out would be to automate a local access to the dashboard on the server through a server-hosted web browser and generate a PDF that way...is this possible, given the constraints of Tomcat and password protection that's handled by the application? The javascript components that Pentaho generates cannot be accessed outside of the application.
Thanks!
EDIT:
Good news! wkhtmltopdf works! Kind of. I got past the password authentication through putting the login details through a query string, and I'm getting a pdf of the correct page now. The issue is that no javascript components are showing up... (they work for pages like yahoo.com, so maybe I'm missing something here).
If you have a lot of AJAX calls you should wait for them. Use the --javascript-delay x argument, where is x is the time to wait.