Alright so I learned that to have an upload button on a page, what you do is basically call a php file (call is upload.php) that would upload a file to the server. I have no idea where I am supposed to put the php file inside the server so I can call it.
I feel stupid because I can't find any answers online. I am getting very frustrated and confused because I am told I need to create a database but I have no idea how to edit a database in Joomla. I took a class in SQL so I don't have to learn about that. I just don't know where it is. I was also told I need to make a component. But this is confusing because all I want to do is have an upload button that will upload an image to the server.
I understand your frustration. I've got the basic idea on what you are trying to do. Here are a couple of options:
You might wanna take a look at Joomla! Extensions Directory ™. You might just find there a component or a module that already does this for you.
If you want to do it on your own, than you need to create a small module or a component inside Joomla! Please refer to the Joomla! Documentation or tutorials on this topic. Please note that you won't get this working instantly, because you first need to understand how Joomla! works. So your upload.php file will go in your module / component files. I don't think you need to do any SQL.
Now the part with "allowing a user" is a bit confusing... you want to "allow" any user to upload things to your server or just let's say, registered users? Generally uploading scripts need to be very strong from the security point of view. If this is the case, that you need to do a search for Joomla! ACL
You can simply create a form and add the "media" field type.
http://docs.joomla.org/Standard_form_field_types
You can also opt for the "file" field types to allow different types of fields.
Both fields can be added using the Joomla Component Creator: http://www.notwebdesign.com/joomla-component-creator/
And you might also want to take a look at K2 which has an excellent image upload functionality that allows scaling of images into three different sizes.
Related
We plan to create a Shopify app but we face some problems to find in documentations how to interact with pages.
I`m not sure we must ask every time users to add codes and etc, so I need to know if I miss something.
I need to interact with the product pages in Shopify from an app.
I search and read all the web for this and everything is how to start but not the actual examples.
I know for the ScriptTags and how to include them but that is.
If someone can give me a simple example of how for example to hide the Buy button and insert something on instead.
I know how to select it with the default theme with JQuery but what about all other themes?
There are two ways to interact with the front page:
1) Inject some code in the page ( the live one )
2) Use ScriptTag as you mentioned.
The code injection script will modify the product template for example and inject your code if you like to do this automatically or you can instruct the user to do so on their own, but if they are not code savvy there might be issues.
In addition this code will live only on the live theme in most cases. And if the user likes to delete your app at a specific time you must be sure to write the logic in such way that it won't affect the site if your app is no longer present ( since it will be really hard to clean up the files once you add the code automatically )
For this approach you will need to use the Asset API.
You will need to get the content of the file with a GET request to the file and make a put request in order to update it.
The better approach is to use ScriptTag API.
This will allow the use of a script file that will be attached on EVERY theme. This will not modify the theme files in any form or shape.
It seems that this is the approach that you are looking for.
Please have in mind that you will be the one hosting the file from your app so pretty much you can write what ever you like there. So if you like to use jQuery you must be sure that the themes have included jQuery or you will have to add the jQuery core code inside your script.
As for how to write a script tag, there is a pretty straightforward documentation here: https://help.shopify.com/en/api/reference/online-store/scripttag#create-2020-01
I want to write a small extension that is able to take some informations from the database, based on some user filter preference, and show them on the main page.
I have read: PHPBB extensions development and took a look at: ACME DEMO extension but i didn't find an answer to where the database handling should be placed. Normally this should go into a Model that will handle the data to a Controller, in this case I was not able to figure out where the Model should be placed in to the structure and how it should work.
How should an extension database model should be handled? Where should it sit in to the extension structure?
I'm guessing you would need an event listener.
PHP event listeners work with core events to inject code into phpBB.
Core events are like hooks, and they can be found throughout phpBB’s
codebase at key points. They give your extension access to phpBB’s
variables and allow you to use and modify them or to inject additional
PHP code during phpBB’s execution. -per the Skeleton Extension
Page
I'm about to create an application that uses JSON to update its content.
This is how I planned it to work:
When application starts, it checks (with internet connection is available) if the JSON file set on remote server is newer than the one stored localy - if it is then it's downloaded.
Then, the application applies data from that JSON to the content. For example, to the "Contact" information - it applies data like phone numbers etc.
My question is, is it in your opinion, a good technique to update appliactions content?
Does anynone had an experience with building app with this kind of idea?
Best regards,
Zin
Of course you can do this. One thing that may lead to a better user experience would be to ask the user for his permission to download new content (if there is something new).
This is a normal thing to do. I have a phonebook app that does exactly this. On a side note, if you need a network class to handle the web-service interaction, see this SO post. I wrote a custom network class that works with AFNetworking.
I need to display pages in a tutorial fashion. I looked in to netsupport, beamyourscreen and other possibilities but, I do not want the viewers to download anything. I cannot use gd / send screenshots due to audio / video instructions embedded in some of the pages.
Basically, I need the ability to "refresh" a users browser window to a different page via an interface on my end. Whether via a form submission, javascript or any other type of "controller" that allows me to change the page on the viewers browser. PERL preferred but, PHP / javascript whatever works and is cross browser. I set up a simple javascript page forward timer that "works" but, page load times and conversation interruptions are a huge factor.
The entire tutorial website will be developed around this ability.
I was looking in to curl / cron / wget methods but, found little information.
I have seen forum and chat scripts that basically perform a similar task but, there must be a simple(ish) solution in leau of hacking up another script to suit my needs.
I do not want others to control the pages either. The site really, only needs to be accessable during the tutorial however, It "could" remain web accessable as long as user interaction was normal unless (being controlled).
The initial site concept is based on instructing people how to properly introduce new pets into a home. Will be operated by a veteranarian that saved my pets life. I wanted to give something back.
Possible? I really appreciate simple examples etc...
You have no other way but to keep polling the server for "instructions" using javascript. No, you can't send nothing to the end user browser, neither curl nor wget.
Mainly, you'll have to set up a simple request/response protocol between the browser and the server.
If you want to go deeper, you can use something like cometd/meteord/etc. If not, a hidden iframe that reloads himself and receives pages with javascript code for the needed actions can do the trick.
Another alternative.
With javascript dopolling and single character flatfile. Have a simple one character flatfile with a single var. Write it in perl (it is faster and uses less resources than php). The parent script calls a javascript variable in a flatfile. It hits the flatfile and goes wherever the var sets it. The flatfile is written to by the controller. Done.
I guess you could also rename an empty flatfile and use that as the controller. I am usure which is faster, open and read a specific file or hit the directory and return the file name. On the controller side, opening and writing to a file vs renaming a file. Maybe they counter each other in resources and time?
This way the site can act as a normal site. When you want to have remote users see a "presentation" (automatically being shown the site pages at the controllers pace), the controller activates polling and tells the viewers to push a start button. This allows a remote instructor to load pages for the viewers at his leisure.
It is a simple solution that works with nothing really sophisticated going on. No frames are needed either. Just need javascript enabled.
Any better suggestions are welcome!
It occurred to me that what you might want to use is HTML Push technology. Check out the wiki, they have several links. I have never used it myself
Once I have my renamed files I need to add them to my project's wiki page. This is a fairly repetitive manual task, so I guess I could script it but I don't know where to start.
The process is:
Got to appropriate page on the wiki
for each team member (DeveloperA, DeveloperB, DeveloperC)
{
for each of two files ('*_current.jpg', '*_lastweek.jpg')
{
Select 'Attach' link on page
Select the 'manage' link next to the file to be updated
Click 'Browse' button
Browse to the relevant file (which has the same name as the previous version)
Click 'Upload file' button
}
}
Not necessarily looking for the full solution as I'd like to give it a go myself.
Where to begin? What language could I use to do this and how difficult would it be?
Check if the wiki you mean to talk to supports XMLRPC, because if it does it should be a snap. I wrote a tool called WikiUp to solve a similar problem (updating a delineated section on a wiki page).
If you're writing in C#, the WebClient classes might be a good place to start. I bet people could give more specific advice if you mentioned which wiki platform you are using, and whether it requires authentication, though.
I'd probably start by downloading fiddler and watching the http requests from doing it manually. Then you could use some simple scripts and regexes to build your http requests for automating the process.
Of course, if your wildly lucky, your wiki would have a backend simple enough that you could just plug them into its db directly. :)
You might find CoScripter useful -- it's a Firefox extension that allows you to automate tasks you perform on websites. I'm not certain how you'd integrate this with the list of files you're changing on your local system, but it can certainly handle the file uploading through a web form.
Better bet is probably using cURL or a similar HTTP library with your programming language of choice. If you're on *nix, you can use the cURL commandline program inside your shell script to get this done fairly easily. (Like #jsight said you will need to analyze the actual forms you're using on the webpage, using Fiddler or just looking at the form elements and re-creating the POST through cURL.)