similar to: Adding values from a db the rails way?

Finally found a nice date chooser script (http://projects.exactlyoneturtle.com/date_picker), but am a little confused how to implement it. So I put this where I need the date picker: <a id="_name_link" href="#" onclick="DatePicker.toggleDatePicker(''name'')" class="demo_link">[ choose date ]</a> <div

So I''ve worked through Agile Web Development with Rails and I''m now trying my first little app to get into the swing of things. Its a task tracking app where people can create tasks and assign them to others, and also log time against the tasks. I''m having trouble working out the model relationships. This is what I''ve got so far, but its not right as

I'm working on the across the subprogram call optimization, and let's say the following llvm IR, @ng0 = internal global [2 x i32] [i32 2, i32 0], align 4 %t7 = alloca [16 x i8], align 16 %add.ptr = getelementptr inbounds i8* %t1, i64 40 %call = call i8* @handle_value(i8* %add.ptr, i32 3) #3 %arraydecay = getelementptr inbounds [8 x i8]* %t3, i64 0, i64 0 %arraydecay1 =

Hi, Is there an easy way of querying an active record for a maximum column value? I need to do queries like: SELECT MAX(salary) FROM employees TIA, Jeroen

How do you run an ad-hoc query that does not belong in any model? I thought it was something like ActiveRecord::connection.find("my query..."), but I can''t seem to find the documentation on it. I know I''ve seen it somewhere before, though. thanks, Jeff -- Posted via http://www.ruby-forum.com/.

R-newbie question I have 2 matrices (a) P1 has only one column of 32K rows (b) PC has 2 column {P, C} of 3200 rows Every values in P1 matches with a value in PC[,p] (column p). I would like to use Which to search for all value in P1 that matchex PC[,p] and get the PC[,c]. However because P1 and PC does not have the same number of rows, I got lots of 'NA'. Thanks for your

I want to be able to change one attribute of a link_to to be what is the current selection of the collection_select. And needless to say I can''t quite figure it out. app/views/tasks/show.html.erb Who would you like to assign this task to?<br /> <%= link_to ''Myself'', :controller => ''task_queues'', :task_id => @task.id, :action =>

I have some legacy tables that I used set_table_name on, I''m attempting to write a method that will get key value from a sequence table and then update it and return a value. I''m hoping to put this in the base ActiveRecord method so I would like to reference the table name with self.table_name or something... class Contacts < ActiveRecord::Base set_table_name

Hello, I would like to run a series of chisq.test() and store results (x-square, df, p-value) in a matrix for further analysis, but don't know how to do such. Currently I run the command line for each set of data at a time and it is time consuming. Thank you for your help. --My Coyne [[alternative HTML version deleted]]

So I have a select list with a list of items. When a user selects an item, another select list should have its default selected item set to a specific item (the default associated with the first select list). This is in a form to create a new task. The first select list is a list of parent tasks. When one selects the parent task, the clients select list must default to the same client as its

Thanks for the advice. Going to look into this more this evening and hopefully get everything working. Thanks again! On Thu, Nov 5, 2015 at 11:56 AM, Dirk Eddelbuettel <edd at debian.org> wrote: > > On 5 November 2015 at 11:44, Michael Coyne wrote: > | What do you have installed as far as libcurl goes? Would you mind > | listing your packages and greping for libcurl entries.

I have a time tracking app where (pseudo-code) Client has_many Task has_many TimeRecord TimeRecord start_at, :datetime end_at, :datetime What I''m trying to do (and I have done using find_by_sql in the past) is get a sum of the timespan given by ended_at - begun_at for each client. Is it naive to imagine that AR''s calculations will span relations to provide a grouped

I have the requirement to empty the association records and add the association records as new (as below). @task = Task.find(params[:task_id]) @task.task_users = [] params[:ids].split(", ").each do |court_user_id| task_user = TaskUser.new(:court_user_id => court_user_id) @task.task_users << task_user end @task.save This is not working. Following error is thrown.

What do you have installed as far as libcurl goes? Would you mind listing your packages and greping for libcurl entries. Perhaps I need some libcurl debs installed when I install r-base? On Thu, Nov 5, 2015 at 11:34 AM, Dirk Eddelbuettel <edd at debian.org> wrote: > > On 5 November 2015 at 11:11, Michael Coyne wrote: > | Hello, > | > | I'm install R from a package off of

Can''t seem to find an example of this anywhere - how do I populate a select list in a form from a database? I have a form to create a new task. The task is for a client, so there should be a select list populated from my clients table. I thought this would work: <%= select ''task'', ''client_id'', Client.find_all, "id", "name"

Dear R-Helpers In R 2.5.1, the command library(Rgraphviz) fails on my Windows (XP SP2) system with error popup "The procedure entry point Rf_allocString could not be located in the dynamic link library R.dll". Thanks in advance for any suggestion in solving the error. My D. Coyne Imagination is more important than knowledge... (Albert Einstein) mcoyne@boninc.com

I'm ordering "The R Book" and hope to learn a lot more about R. In a meantime, I have a matrix of digits and I would like to look for a column that contains zeroes and remove the entire column from the matrix. I can write a piece of R code to do that (and it works); however, I think the R-experts have more tricks to do such a 'simple' thing. Many thanks in advance.

Hi, I place a t.test in a loop and would like to continue to process the loop even when t.test encounter error. How do I do that? For example, in one iteration, the data is completely constant and t.test gives error, the entire program terminates. I would like to write the information out to a file, and the loop should continue. Thanks My D. Coyne [[alternative HTML version

Hello, Newbie question and hope you can help . I have two vector V1 and V2, where length(V2) = length of (V1) * 2; length(V1) ~ 16,000. For each member in V1, I need to compare 2 element of V2 for equality i.e. for (I in 1:length (V1)) { if ( v2[i] == v1[i] & v2[i+1]==v1[i] ){ statement_1 statement_2 . } } This for-loop is too slow

Hello, I was wondering if there was a method in Rails that returns the sum of a column. For example, I have a column called ''score'' and writing a SQL statement such a ''select sum(score) from table_name'' does return the sum of the values in the column. In the past (not too long ago being a newbie), I defined all sorts of methods only to discover that Rails