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  • best approah (security) to do some admin work through web page in Linux?

    - by Data-Base
    Hello, I want to build a web based admin tools that allow the system admin to run pre-configured commands and scripts through a web page (simple and limited webmin), what is the best approach? I already started with Ubuntu installing LAMP and give the user www-data root's privileges !!! as I learned (please check the link) this is a really bad move !!!, so how to build such web-based system without the security risk? cheers

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  • Validate dependent model validation and show error message.

    - by piemesons
    Just taking a simple example. We have a question on stackoverflow and while posting a question we want to validate title_of_question, description_of_question that they should be present. Now we have a another model tag having habtm relationshio with question model. How to validate that while saving the question. Means question must have some tags. here the code:-- Models:-- class Question < ActiveRecord::Base belongs_to :user has_and_belongs_to_many :tags has_many :comments, :as => :commentable has_many :answers, :dependent => :destroy validates_presence_of :title, :content, :user_id end class Tag < ActiveRecord::Base has_and_belongs_to_many :questions validates_presence_of :tag end Form for entering question and tag <div class="form"> <% form_for :question ,@question, :url => {:action => "create" } do |f| %> <fieldset> <%= f.error_messages %> <legend>Post a question</legend> <div> <%= f.label :title %>: <%= f.text_field :title, :size => 100 %> </div> <div> <%= f.label :content ,'Question' %>: <%= f.text_area :content, :rows => 10, :cols => 100 %> </div> <div> <%= label_tag 'tags' %>: <%= text_field_tag 'tag' ,'',:size=> 60 %> add multiple tag using comma </div> <div> <%= submit_tag "Post question" %> </div> </fieldset> <% end %> </div> From Controller.. (Right now question will be saved without validating tag) def create @question = Question.new(params[:question]) @question.user_id=session[:user_id] if @question.save flash[:notice] = "Question has been posted." redirect_to question_index_path else render :action => "new" end end questions_tags table has been created. One approach is creating a virtual column using attribute accessors. another approach is validate associated. right now assuming new tags can be created.(but not duplicate).

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  • Android - Declarative vs Programmatic UI

    - by Steve
    Has anyone seen or compiled benchmarks comparing declarative (XML) versus programmatically created UI's in Android? There are things that Google has done to speed up the declarative approach, but you still do have the layout inflation step done at runtime. Have you ever switched (or considered) changing your UI from declarative to programmatic for any reason?

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  • installing a package with xml based configuration in python

    - by saminny
    Hi, I am planning to write a generic python module for installing a package. This script should retrieve the module from a remote machine or locally and install it on a given host and user. However, there needs to be changes made to the package files based on the host, user and given environment. My approach is to use XML to describe changes to be made to package files based on environment. It will first extract the package to the user directory and then using an xml configuration file, it should replace the file values in the package directory. The xml would look something like this: <package version="1.3.3"> <environment type="prod"> <file dir="d1/d2" name="f1"> <var id="RECV_HOST" value="santo"> <var id="RECV_PORT" value="RECV_PORT_SERVICE" type="service"> <var id="JEPL_SERVICE_NAME" value="val_omgact"> </file> <var dir="d4/d3/s2" name="f2"> <var id="PRECISION" value="true"> <var id="SEND_STATUS_CODE" value="323"> <var id="JEPL_SERVICE_NAME" value="val_omgact"> </file> </environment> <environment type="qa"> <file dir="d1/d2" name="f1"> <var id="RECV_HOST" value="test"> <var id="RECV_PORT" value="1444"> <var id="JEPL_SERVICE_NAME" value="val_tsdd"> </file> <file dir="d4/d3/s2" name="f2"> <var id="PRECISION" value="false"> <var id="SEND_STATUS_CODE" value="323"> <var id="JEPL_SERVICE_NAME" value="val_dsd"> </file> </environment> </package> What are your thoughts on this approach? Is there an existing python module, package or script that I could use for this purpose since this seems fairly generic and can be used for any installation. Thanks! Sam

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  • authlogic rails question - how to code for an API

    - by phil swenson
    I have authlogic going on my app, but now I need to have an an API. I don't want to establish a session, just want a user to send in data in a json request such as: {"type":"address","password":"mypassword","name":"my notificaiton name goes here","user":"myusername","text":"my interesting stuff goes here"} So questions - 1) is this a decent approach? 2) how do i do the auth inside my rails controller?

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  • Visual Studio Solution: static or shared projects?

    - by goodrone
    When a whole project (solution) consists of multiple subprojects (.vcproj), what is a preferable way to tie them: as static libraries or as shared libraries? Assuming that those subprojects are not used elsewhere, the shared libraries approach shouldn't decrease memory usage or load time.

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  • 3-4 old computers = general purpose cluster?

    - by TheLQ
    I have 3 old computers lying around right now running a P2 at 800 MHz(?), Intel Mobile 1.6 GHz, AMD Athlon XP 2000+ at 1.66 GHz, and (might not use this) P4 at 2.7 GHz, all with 512 MB Ram, and am considering clustering them together for fun/knowledge. They would be running an undecided version of linux, preferably ubuntu based. The issue is what I want to use it for: general computing and occasional video encoding. By general computing I mean day to day tasks. However I'm not sure if every program started by a single X session is going to exist on the same machine, defeating the purpose of such a system. Will programs be split up or exist on one machine? Second, assuming this is running 100baseT ethernet (not sure if the PCI slot itself could handle Gigabit), would the speed of having a program exist over the network be an issue? It seems that the constant asking of various things in RAM would be quite slow. And before you say "buy another computer!", that's not the point of this question. I'm asking would it be usable, not necessarily practical. And yes I know, this is going to be extreamly power consuming.

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  • Proper exceptions to use for nulls

    - by user200295
    In the following example we have two different exceptions we want to communicate. //constructor public Main(string arg){ if(arg==null) throw new ArgumentNullException("arg"); Thing foo=GetFoo(arg); if(foo==null) throw new NullReferenceException("foo is null"); } Is this the proper approach for both exception types?

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  • Copy from Mac OS X does not copy to iPhone Simulator

    - by PARTH
    Hi Guys, In my iPhone app, I have many ASCII arts which I need to insert into the database. I am using the simulator and pasting the textpic in the textview to insert the ASCII art to database. Here the clipboard of simulator once pastes the art properly but when I copy another art then too it pastes the previous art into textview. How to solve this problem? Is there a work around for this or any better approach? Please Help and Suggest Thanks

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  • multiple search fields

    - by user234194
    What will be the best approach if I have search fields for 20 or more and any combination should be valid. Is there any special way to do it in openJPA or native SQL is better. Any idea would be helpful.Thanks.

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  • multiple search fields

    - by user234194
    What will be the best approach if I have search fields for 20 or more and any combination should be valid. Is there any special way to do it in openJPA or native SQL is better. Any idea would be helpful.Thanks.

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  • Passing arguments between classes - use public properties or pass a properties class as argument?

    - by devoured elysium
    So let's assume I have a class named ABC that will have a list of Point objects. I need to make some drawing logic with them. Each one of those Point objects will have a Draw() method that will be called by the ABC class. The Draw() method code will need info from ABC class. I can only see two ways to make them have this info: Having Abc class make public some properties that would allow draw() to make its decisions. Having Abc class pass to draw() a class full of properties. The properties in both cases would be the same, my question is what is preferred in this case. Maybe the second approach is more flexible? Maybe not? I don't see here a clear winner, but that sure has more to do with my inexperience than any other thing. If there are other good approaches, feel free to share them. Here are both cases: class Abc1 { public property a; public property b; public property c; ... public property z; public void method1(); ... public void methodn(); } and here is approach 2: class Abc2 { //here we make take down all properties public void method1(); ... public void methodn(); } class Abc2MethodArgs { //and we put them here. this class will be passed as argument to //Point's draw() method! public property a; public property b; public property c; ... public property z; } Also, if there are any "formal" names for these two approaches, I'd like to know them so I can better choose the tags/thread name, so it's more useful for searching purposes. That or feel free to edit them.

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  • XSLT: Transform XML files tree

    - by Myniva
    I have the following file structure (XML files 'index.xml' in nested folders): index.xml foo/index.xml foo/sub/index.xml foo/.../index.xml bar/.../index.xml Now I have to transform each of this XML files with a given XSL stylesheet. The result should be the same folder structure (overwriting would be OK). What would be your approach to achieve this? My system: OS X 10.6, Saxon XSLT processor

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  • Createing a Document Workspaces for Workflow in Sharepoint

    - by Tots
    I need to create a workflow that routes a document to a reviewer and upon approval creates a document workspace in SharePoint 2007. Setting up the workflow for the the approval of the document is simple, but I'm unsure of how to create the document workspace upon approval. I want the document workspace to be created programmatically once the document is approved. Can someone recommend an approach for accomplishing this?

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