I want to know how to avoid bidirectional connections. For example:
http://i.stack.imgur.com/4HR4H.png
Is there any way to do this?
I work with mxGraph, javascript.
EDIT: Sorry, maybe I didn’t explain well, I mean if we have two cells (a---> b) cannot be (a <--- b) this may be detected in real time.
Remove startArrow=classic from the style of the edge.
you can check out this example Validation - Using multiplicities for automatically validating a graph.
mxMultiplicity defines invalid connections along with the error messages that they produce.
Related
When dynamically building SQL queries you often see something like this:
WHEN 1=1 AND title="Example" AND ...
The purpose of the 1=1 is to be able to keep appending AND-statements without having to check if any previous statements exist. Thereby avoiding something like this happening:
WHEN AND title="Example" AND ...
I quite often come across a related issue when building the the attributes/search-query for a GET request. I don't want to keep checking if I need to prepend the attribute with '?' or '&'.
So my question is, is there any 'safe' way for me to add an initial attribute that won't interfere with any potential software on the server side. Assuming I do not have full knowledge of the backend.
Something like:
http://example.com?1=1&title=example
http://example.com?null&title=example
http://example.com?i-am-useless&title=example
Or is this allowed?
http://example.com?&title=example
Is there perhaps a simpler way to solve this?
Make sure the URI-string you want to add parameters to already ends in a '?'. Then for every key-value pair, add 'key=value&' to it. Optionally you can then in the end delete the last character from the resulting string. - Reddit user omepiet
I have question related to the Ranorex Spy.
Is it possible to recognize (by default) elements of the page by attribute other than id, e.g. data-id
I know that I can modify this later manually for each element (but it is time consuming)
Currently:
\input[#id='..."]
Expected (automatically, by Ranorex Spy):
\input[#data-id='..."]
I personnally did not bother using this (because we use many frameworks and whats desired in one framework is not necessarily whats desired in another one) but I think you can achieve priorisation of XPath rules using the RanoreXPath Weight Rules.
Following is a Ranorex article describing how to do this: http://www.ranorex.com/support/user-guide-20/ranorexpath-weight-rule-library.html
Good luck!
I have a table called settings, when I would change or enter data into the form it did not change the data in the table. In addition on form an image upload file is not running, There may be the wrong code below.
(Solved by me)
Maybe someone can help me Related to this.
What you are doing here is tottaly in secure and your data can be hacked / manipulate really fast.
Why dont you use a framework like codeignighter there are about 100 easy frameworks that will help you manage database a lot easyer.
Are you sure that you are updating the wrond ID? where id = 1, seems to be not dynamic.
Please post your error http://www.w3schools.com/php/func_mysql_error.asp
I know it is not so related to your question, but you should see these light frameworks:
http://kohanaframework.org/
https://github.com/ElbertF/Swiftlet
http://ellislab.com/codeigniter
You're not checking the return status of of your query, so if it's not working you wouldn't know. Do this:
mysql_query("UPDATE settings SET site='$name',keywords='$keys',descrp='$desc',email='$email',fbpage='$fbpage',twitter='$twitter',gplus='$gplus',disclaimer='$disclaimer',template='$template' WHERE id=1")
or die(mysql_error());
Note: mysql_*() is deprecated: you shouldn't use it. Use mysqli_*() or PDO instead.
Also: You are susceptible to an SQL Injection attack. You should escape your input variables with mysql_real_escape_string() (or the equivalent if you switch to mysqli), or consider moving to prepared statements.
I'm building a site that shows changes in deals that we have in our db. For example, if a deals status changes from pending to win, I want to show it, and if the value goes up or down, I want to show it, that kind of thing. Also, if you open the overview page, I want it to show the history of changes. So I need some kind of change logging, to be able to look in the past. How do I do this?
It is a rails project, but I think that's irrelevant.
I doubt there is any generic solution to this problem.
You can roll out your own. Start by considering all objects that need change logging. How many types are there? How often do you expect changes to occur? This will help you estimate the potential number of changes throughput you'll need to be dealing with. If there aren't too many, just stick them into database. If you are generating a lot, try storing to comma-separated-value file.
I have implemented a similar system before. I had 3 types of changes: 1) property value change, 2) adding of a value to a list, 3) removing value from a list.
I used the following format, stored in a log file:
//For type 1)
1,2011/01/01 00:00:00,MyObject,myProperty,oldValue,newValue
//For type 2)
2,2011/01/01 00:00:00,MyObject,myListProperty,addedValue
//For type 3)
3,2011/01/01 00:00:00,MyObject,myListProperty,removedValue
This captured most information I needed. The value parts were just some user-readable summary of the changed/added/removed property value.
Paper Trail Gem
Since you're on Rails, take a look at the PaperTrail gem. It does exactly what you're looking for and is beautifully built. You'll just need to add in a callback so that your overview page knows that a change occurred. But for the history of a model, just use the built-in PaperTrail functionality.
Tagsoup is interfering with input and formatting it incorrectly. For instance when we have the following markup
Text outside anchor
It is formatted as follows
Text outside anchor
This is a simple example but we have other issues as well. So we made tagsoup cleanup/formatting optional by adding an extra attribute to textarea control.
Here is the diff(https://github.com/binnyg/orbeon-forms/commit/044c29e32ce36e5b391abfc782ee44f0354bddd3).
Textarea would now look like this
<textarea skip-cleanmarkup="true" mediatype="text/html" />
Two questions
Is this the right approach?
If I provide a patch can it make it to orbeon codebase?
Thanks
BinnyG
Erik, Alex, et al
I think there are two questions here:
The first Concern is a question of Tag Soup and the clean up that happens OOTB: Empty tags are converted to singleton tags which when consumed/sent to the client browser as markup gets "fixed" by browsers like firefox but because of the loss of precision they do the wrong thing.
Turning off this clean up helps in this case but for this issue alone is not really the right answer because we it takes away a security feature and a well-formed markup feature... so there may need to be some adjustment to the handling of at least certain empty tags (other than turning them in to invalid singleton tags.)
All this brings us to the second concern which is do we always want those features in play? Our use-case says no. We want the user to be able to spit out whatever markup they want, invalid or not. We're not putting the form in an app that needs to protect the user from cross script coding, we're building a tool that lets users edit web pages -- hence we have turned off the clean-up.
But turning off cleanup wholesale? Well it's important that we can do it if that's what our usecase calls for but the implementation we have is all or nothing. It would be nice to be able to define strategies for cleanup. Make that function plug-able. For example:
* In the XML Config of the system define a "map" of config names to class names which implement the a given strategy. In the XForm Def the author would specify the name from the map.
If TagSoup transforms:
Text outside anchor
Into:
Text outside anchor
Wouldn't that be bug in TagSoup? If that was the case, then I'd say that it is better to fix this issue rather than disable TagSoup. But, it isn't a bug in TagSoup; here is what seems to be happening. Say the browsers sends the following to the client:
<a shape="rect"></a>After<br clear="none">
This goes through TagSoup, the result goes through the XSLT clean-up code, and the following is sent to the browser:
<a shape="rect"/>After<br clear="none"/>
The issue is on the browser, which transforms this into:
<a shape="rect">After</a><br clear="none"/>
The problem is that we serialize this as XML with Dom4jUtils.domToString(cleanedDocument), while it would be more prudent to serialize it as HTML. Here we could use the Saxon serializer. It is also used from HTMLSerializer. Maybe you can try changing this code to use it instead of using Dom4jUtils.domToString(). You'll let us know what you find when a get a chance to do that.
Binesh and I agree, if there is a bug it would be a good idea to address the issue closer to the root. But I think the specific issue he is only part of the matter.
We're thinking it would be best to have some kind of name-to-strategy mapping so that RTEs can call in the server-side processing that is right for them or the default if it's not specified.