save

Python class decorator extending class causes recursion

╄→гoц情女王★ 提交于 2019-12-04 09:26:24
I'm overwriting the save method of a ModelForm and I don't know why it would cause recursion: @parsleyfy class AccountForm(forms.ModelForm): def save(self, *args, **kwargs): # some other code... return super(AccountForm, self).save(*args,**kwargs) Causes this: maximum recursion depth exceeded while calling a Python object Stacktrace shows this line repetitively calling itself: return super(AccountForm, self).save(*args,**kwargs) Now, the parsley decorator is like this: def parsleyfy(klass): class ParsleyClass(klass): # some code here to add more stuff to the class return ParsleyClass As

Using Django bulk_create objects in foreign keys?

为君一笑 提交于 2019-12-04 09:23:55
问题 I was reading up on Django bulk_create and a few of its "flaws": " This has a number of caveats though: 1. The model's save() method will not be called, and the pre_save and post_save signals will not be sent. 2. It does not work with child models in a multi-table inheritance scenario. 3. If the model's primary key is an AutoField it does not retrieve and set the primary key attribute, as save() does. " I didn't fully understand it. So if I have a list of objects, pass it into bulk_create:

Saving a TObject to a File

谁说我不能喝 提交于 2019-12-04 08:47:41
问题 How can one save an Object, in its current state, to a file? So that it can immediately be read and restored with all its variables. 回答1: As already stated, the easiest way is to use a Stream and its WriteComponent and ReadComponent methods. But be aware that : - it works for descendants of TComponent , not plain TObject; - only for the published properties (those saved in a dfm), not the public ones nor (a fortiori) the privwte ones; - you have to pay a special attention for the Name

.NET Saving jpeg with the same quality as it was loaded

Deadly 提交于 2019-12-04 08:25:15
问题 I have a cannon digital camera and I set it to take pictures with superfine quality and it outputs a .jpg file 3 mega in size. If I load it like this in ASP.NET(this is useful to change it's dpi resolution or crop it or whaterver) imgPicture = Image.FromFile(Config.WorkDirectory + this.TempPhotoName); bmpPicture = new Bitmap(imgPicture); and then I save it again like this: bmpModified.Save(Config.WorkDirectory + this.TempPhotoName,System.Drawing.Imaging.ImageFormat.Jpeg); it outputs a jpg

Saving and loading data.frames [duplicate]

二次信任 提交于 2019-12-04 07:59:39
问题 This question already has answers here : R data formats: RData, Rda, Rds etc (2 answers) Closed 6 months ago . I have made a dataframe based on a set of twitters in the following form: rdmTweets <- userTimeline("rdatamining", n=200) df <- do.call("rbind", lapply(rdmTweets, as.data.frame)) Now I am saving the data frame with save in this way: save(df, file="data") How I can load that saved data frame for future use? When I use: df2 <- load("data") and I apply dim(df2) it should return the

How to save HTML5 canvas?

坚强是说给别人听的谎言 提交于 2019-12-04 07:55:28
问题 Currently I am using Canvas2Image to save the content of my HTML5 canvas. It doesn't appear to work in Google Chrome, however. Any ideas on how to work around the issue are welcome. :) 回答1: canvas.toDataURL() appears to work fine in Chrome, so it may be a library issue. The "convert canvas to image" functionality seems to work, though. 回答2: use this code <html> <head> <script src="base64.js" type="text/javascript"></script> <script src="canvas2image.js" type="text/javascript"></script> </head

Eclipse Auto-Upload on Save, Without Aptana

折月煮酒 提交于 2019-12-04 07:11:33
I'm using Eclipse to develop a website, and I don't want to run Apache, PHP, and MySQL on my local computer. I already have a remote Linux server set up to do that. What I want though, is every time I save a file, Eclipse should upload that file to the Linux server. Dreamweaver does an absolutely perfect job at this task, but I prefer many other features in Eclipse. I am well aware that there are many, many posts on Stack Overflow about this topic. I have reviewed them, but none seem to quite meet my needs. I'll go through all the possibilities I know about, and talk about why they're not

How to know where on the SD card the images are being stored, DCIM/Camera, DCIM/100MEDIA?

99封情书 提交于 2019-12-04 07:09:24
I have a method in my application which retrieves the last saved image in my DCIM/Camera folder and copies it to another location on the SD card. I've just tested it on another phone and found that it defaults saving to DCIM/100MEDIA . How am I able to get this path? I ended up writing some code which looped through all the folders in the DCIM folder and retrieved the path of the lastModified() folder. Richard Logwood Looks like it is manufacturer dependent. In addition to using methods described in book, it seems also allowing the user to choose/override the default you "discover" would be an

saving a json file to internal memory

人盡茶涼 提交于 2019-12-04 06:48:21
问题 hey there guys and girls i have this code that should download a json object and then save it to internal memory, i keep getting stuck here try{ //connects to mySQL HttpClient client = new DefaultHttpClient(); HttpPost post = new HttpPost("http://10.0.2.2/textures_story_list.php"); HttpResponse response = client.execute(post); //captures the response entity = response.getEntity(); }catch(Exception e) { Log.e("log_tag", "Error in http connection "+e.toString()); } try{ is = entity.getContent()

Unity - Save Progress In Game?

喜夏-厌秋 提交于 2019-12-04 06:32:56
问题 Hi I am creating a small game with Unity3d. But now I have trouble saving some variables. Now I am using the following code void Awake(){ proiettili = PlayerPrefs.GetFloat ("PallottoleOgniSecondo"); } void OnApplicationQuit(){ PlayerPrefs.SetFloat ("PallottoleOgniSecondo", proiettili); PlayerPrefs.Save(); } This way I can save the variable, but only when I try on unity, if I try does not work on Android. you know how I can fix? 回答1: This is how you do it for an example class called MyClass