So, I use DropZoneJS for uploading images for individual products. But i make in database 6 columns for images
"image_1" "image_1thumb" "image_2" "image_2thumb" "image_3" "image_3thumb"
I make script for uploading images on the host and also to convert image to thumb...
So what i need. How i can detect first, second and third image?
I wanna first image name to write in "image_1" and in "image_1thumb", second in "image_2" and in "image_2thumb" and third one in "image_3" and in "image_3thumb"
The dropzone docs mentions a list of events... one being
complete
which returns the current file
So for the Dropzone post the processqueue event
this.on("complete", function (file) {
// this complete will be fired 3 times...in your case
});
you can manipulate the filename here or you can store then in order and later updated your database
Related
I have added custom column to store company logo. I have used file api of moodle like :
$mform->addElement('filepicker', 'certificatelogo', 'Company Logo', null,
array('maxbytes' => $maxbytes, 'accepted_types' => '*'));
$mform->setDefault('certificatelogo', '0');
$mform->addHelpButton('certificatelogo', 'certificatelogo', 'certificate');
Once the form is submitted itemid will be stored in custom column. Say "648557354"
Now I need to get image to print logo on certificate. How can I get image path from itemid? Do I need to store any other information to retrieve image?
The itemid returned is the temporary id of the draft area where the file is stored whilst the form is being displayed. You need to copy the file into its 'real' location, when the form is submitted, otherwise the file will be automatically deleted after a few days (and it will only be accessible to the user who originally uploaded it).
I'd always recommend using the filemanager element, if you are planning on keeping the file around (filepicker elements are for files you want to process and discard, such as when uploading a CSV file data to parse and add to the database).
Details of how to use it are here:
https://docs.moodle.org/dev/Using_the_File_API_in_Moodle_forms#filemanager
But the basic steps are:
Copy any existing files from the 'real' area to the draft area (file_prepare_standard_filemanager).
Display the form.
On submission, copy files from the draft area to the 'real' area (file_postupdate_standard_filemanager).
When you want to display the file to the user, get a list of files stored in the file area (defined by the component, filearea, context and, optionally, itemid, you used in file_prepare_standard_filemanager and file_postupdate_standard_filemanager). You can do this with: $fs = get_file_storage(); $fs->get_area_files().
For those files (maybe only 1 file, in your case), generate the URL with moodle_url::make_pluginfile_url.
Make sure your plugin has a PLUGINNAME_pluginfile() function in lib.php, to examine incoming file requests, do security checks on them, then serve the file.
There is a reasonable example of all of this at: https://github.com/AndyNormore/filemanager
I'm using TCPDF to create two separate reports in different parts of my website. I would like that, in the end of the first report, the second report should be loaded.
It's different than import a PDF file, because the second report is also generated by TCPDF. Is there a way to do this?
I assume from your question that what you ultimately want to provide is one PDF file that consists of the first PDF concatenated with the second PDF.
One quick and dirty solution is to utilize the pdftk command line PDF processor and call it from within your PHP code using the exec() function. The pdftk command has many features and concatenating files is only one of them, but it does an awesome job. Depending on your hosting situation, this may or may not be an option for you.
The other option would be to use FPDI to import the two PDF files and concatenate them within your PHP code and then send the concatenated version to the user.
More information on using PFDI here:
Merge existing PDF with dynamically generated PDF using TCPDF
Given that you're already using TCPDF, importing the pre-existing file that you want to concatenate with the one you've just created shouldn't be too difficult.
Just add FPDI to your project/composer from:
https://www.setasign.com/products/fpdi/downloads/
Can you still used tcpdf.
FPDI support all the methods of tcpdf, just used new FPDI() instead new tcpdf() the result will be the same in your report, after you create your report marge the files with the code from this page:
https://www.setasign.com/products/fpdi/about/
In a loop, once set the first file and after this set the second...
If you will need help i am here for you.
I have several PNG images, which I need to combine as individual layers in a new GIMP XCF image. I need to perform this task many times, so a script based solution would be best.
So far i tried to play around with the batch mode of GIMP, but failed miserably.
Instead of script-fu, which uses Scheme, I'd recommend using the GIMP-Python binding for this, since it is far easier to manipulate files and listings.
If you check filters->Python->Console you will b dropped into an interactive mode - at the bottom of it, there will be a "Browse" button which lets you select any of GIMP's procedures in its API and paste it directly in this console.
There is as an API call to "load a file as a layer" - pdb.gimp_file_load_layer -
this however, brings the image to memory, but do not add it to the image - you have to call
pdb.gimp_image_insert_layer afterwards
You can type this directly in the interactive console, or,check one of my other GIMP-related answers, or some resource on GIMP-Python on the web to convert it to a plug-in, which won't require pasting this code each time you want to perform the task:
def open_images_as_layers(img, image_file_list):
for image_name in image_file_list:
layer = pdb.gimp_file_load_layer(image_name)
pdb.gimp_image_insert_layer(img, layer, None, 0)
img = gimp.image_list()[0]
image_list = "temp1.png temp2.png temp3.png"
open_images_as_layers(img, image_list.split())
The second to last line img = ... picks a needed reference to an open image
in GIMP - you could also create a new image using pdb calls if you'd prefer
(example bellow).
The file list is a hardcoded space separated string in the snippet above,
but you can create the file list in any of the ways allowed by Python.
For example, to get all the ".png" file names in a
c:\Documents and Settings\My user\Pictures folder, you could do:
from glob import glob
image_list = glob("c:/Documents and Settings/My user/Pictures/*png")
To create an image programatically:
img = gimp.Image(1024, 768)
pdb.gimp_display_new(img)
The good news:
I don't care if it uses ajax or not.
I don't care if the user must install a specific browser to make it work.
I don't care if there isn't any specifc progress bar.
The bad news:
I don't want to use flash.
The user must upload a file from any width or height - however no bigger then 8MB.
The file must be stored on a specific folder (or database column).
A thumbnail must be generated on a specific folder (or database column).
Those images must be associated with a specific record.
This is a "modus operandi" question, I realise that there is to much code involved here.
So:
We first create our form element to support multiple upload, like this:
$element = new Zend_Form_Element_File('multifile');
$element->setAttrib('multiple', true);
$element->setIsArray(true);
We then, need to add some validations and allowed extensions;
Then we need to process the upload;
Once the upload is done, we need to resize those multiple files according to our needs.
We need to store those resized files somewhere else.
Once all this is done, we are ready to display the files associated with a specific database record?
Is this the way to go? Should I have more steps? Am I missing something. I've never done this before, but I'm taking it like a challenge.
First, you create a form. Not much complication here:
$this->addElement('File','Filedata');
$this->Filedata
->setLabel('Select images')
->setDestination('somepath') //define & create it somewhere earlier ;)
->addValidator('Size', false, 1024000)
->addValidator('Extension', false, 'jpg,png,gif')
->setMultiFile(5)
->addValidator('Count', false, array('min'=>0,'max' => 5))
;
In the controller, you receive the images. They will have temporary random names, which you can keep later if you wish (I usually do).
$fileinfo = $form->Filedata->getFileInfo();
$path = 'somepath'; //make sure it exists
for($i=0;$i<5;$i++) {
if($fileinfo['Filedata_'.$i.'_']['tmp_name']) {
$img = new Imagick($fileinfo['Filedata_'.$i.'_']['tmp_name']);
// image processing goes here
file_put_contents('somepath',$img);
}
}
And that's it ;)
Many photo viewing and editing applications allow you to examine and change EXIF and IPTC data in JPEG and other image files. For example, I can see things like shutter speed, aperture and orientation in the picture files that come off my Canon A430. There are many, many name/value pairs in all this metadata. But...
What do I do if I want to store some data that doesn't have a build-in field name. Let's say I'm photographing an athletics competition and I want to tag every photo with the competitor's bib number. Can I create a "bib_number" field and assign it a values of "0001", "5478", "8124" etc, and then search for all photos with bib_number="5478"?
I've spent a few hours searching and the best I can come up with is to put this custom information in the "keywords" field but this isn't quite what I'm after. With this socution I'd have to craft a query like "keywords contains bib_number_5478" whereas what I want it "bib_number is 5478".
So do the EXIF and/or IPTC standards allow addtional user-defined field names?
Thanks
Kev
It can be used for that, but it really shouldn't: it's meant to be user-editable and so isn't a safe place to put critical metadata. Using an XMP sidecar is better for this kind of thing: in XMP, any field added that a given app does not understand is, according to the standard, supposed to be ignored by that app and not destroyed.
I don't know if there are applications to do this but by the standards described for JPEG files there is a field called Comments where you can assign values that could act like tags.
C# code:
using System.Windows.Media.Imaging;
using System.IO;
...
FileStream fs = new FileStream(#"<img_path>", FileMode.Open, FileAccess.ReadWrite);
BitmapMetadata bmd = (BitmapMetadata)BitmapFrame.Create(fs).Metadata;
bmd.Comment = "Some Comment Here";
also if you are looking for an application that already has this functionality built into it, then might i recommend Irfan View (open pic, go to Image menu, click on Comments button).
Hope this helps.