Displaying 20 results from an estimated 8000 matches similar to: "last record"
2006 Aug 09
7
function before_save
Hi everybody
I would like a function as the "before_save" method in the model. But it
must be the opposite. When I take out data from the database through the
model, I want to call a function before the data are available in the
controller.
Can anyone help me?
---- >>>> thx <<<< ----
--
Posted via http://www.ruby-forum.com/.
2006 Aug 17
3
Use collection_select
I use the following code in my view:
<%= collection_select(''datedata'', ''date'', @allDate, :id, :date) %>
It''s show me the date of all entries in the database (Dropdown menu).
Additional, I wrote a helper method "showDate" in the
application_helper.rb! How can I use this method in the
collection_select for every date entry?
thanks
2006 Aug 03
2
Link to an other model
Hi
I a newbie in RoR! So I have an easy question for some of you:
I want with the following codeline link to the Admin-Controller. The
codeline is on the Product-View with a seperate controller "Product".
<%= link_to ''Back'', :action => ''Admin'' %>
But it doesn''t work correctly. Can anyone help me? I want to make a
simple link!
2006 Aug 08
2
validate data
Can anyone help me??
I validate a form-field:
protected
def validate
errors.add(:name, "should be longer than 2 chars") unless name.length
<= 2
end
I want to check the variable name. It should have a size over 2
characters. But my function "validate" doesn''t run! Why ???
--
Posted via http://www.ruby-forum.com/.
2006 Jun 18
10
acts_as_enumerated
Hello All,
Any one using acts_as_enumerated? I need help using (I like that it
caches values in memory)
I am working on a dating website and there are lots of options I want to
store as enumerated like
Status; divorce, single,
Sex: male, female
Eye color; blue, brown, green....
and lots more....
But I do not wanna keep them in seperate tables, and wanna keep them all
together.
Anyone has a
2006 Aug 14
1
UK Pound Signs being handled as \243?
Hello,
It seems like something has recently caused ? symbols to be displayed as
\243
on our FreeBSD 6 server. We think this is causing our rails-based payment
system to fail to process transactions which is obviously very bad for us!
Why / How would this start happening? The server is configured to use UK ISO
keyboard map and it was working fine until recently. I''m at a loss to
2006 Aug 14
1
Testing CRUD/Rest Controllers
I have a few simple controllers doing plain, simple crud in a standard way.
now it''s not very DRY to write a funtcional test for each controller, since
they are all doing the same (apart from a few variable names, but that could
be easily inflected or so).
is there a way to do this?
e.g. does inheritance work with tests, so i define a base test first,
inherit my other tests and add a few
2006 Jun 26
8
id of last element in a table
Hi,
I would like to figure out how to determine what the id of the last
element in a table is. Is there an equivalent to the Table.find() method
which will tell me the number of elements in a table? also, maybe more
importantly, where are the available methods on tables documented?
What i am trying to do is to increment the id and work through a table
and check whether the id i am currently
2008 Feb 12
3
help with bwplot
Dear list,
I have following data set, which I want to plot the "Scale" variable on the
x-axis and "Mean"´on the y-axis for each Ageclass and for each sex. The Mean
value of each Ageclass for each sex would be connected by a line. Totally,
there should be 6 lines, from which three present the Mean values of each
Ageclass for respective sex. Are there any easy ways to do
2005 Dec 24
2
grouping data
Hello R-users/experts,
I am new to R-
I have a simple question:
Let say I have a data set as follows
temp:[file attached]
the data structure is a follows:
sex age
female 28
female 53
female 53
female 36
male 42
male 29
male 43
male 36
male 41
Here we are grouping all male value into male and all female value in to
female
2010 May 07
2
extract required data from already read data
Hi all,
I have data like this:
>sample <- read.csv(file="sample.csv",sep=",",header=TRUE)
> sample
stdate Domain sex age Login
1 01/11/09 xxx FeMale 25 2
2 01/11/09 xxx FeMale 35 4
3 01/11/09 xxx Male 18 30
4 01/11/09 xxx Male 31 3
5 02/11/09 xxx Male 32 11
6 02/11/09 xxx Male 31 1
7 02/11/09
2013 Nov 04
2
Fwd: recodificar variables
Buenas noches, mi pregunta es tal vez sencilla.
tengo esta libreria y estos datos
library(nlme)
data(MathAchieve) Infoest = MathAchieve
en esta base quiero contar la cantidad de casos en la que la columna Sex,
toma el valor Female, como puedo hacerle el filtro para ver solo los
Females.
y como puedo dentro del mismo conjunto de datos agregar la variable
numerica que me cuente 1 si es Female y 0
2010 Sep 10
3
(no subject)
Hello,
I'm trying to do bar plot where 'sex' will be the category axis and
'occupation' will represent the bars and the clusters will represent
the mean 'income'.
sex occupation income
1 female j 12
2 male b 34
3 male j 22
4 female j 54
5 male b 33
6
2012 Sep 05
2
Recoding categorical gender variable into numeric factors
I currently have a data set in which gender is inputed as "Male" and "Female"
, and I'm trying to convert this into "1" and "0".
I found a website which reccomended using two commands:
data$scode[data$sex=="M"] <- "1"
data$scode[data$sex=="F"] <- "2"
to convert to numbers, and:
data$scode <-
2006 Jun 10
3
Weird Problem With Active Record
Is it me or is my model getting the created_at from the wrong model!
I have a HABTM relationship between Problems and Tags. In one of my
controller I do the following:
def view
@tag = Tag.find_by_name @params[:id]
end
In my view I do this:
<% @tag.problems.each do |problem| %>
...
<%= problem.created_at %>
...
<% end %>
Now, how come the created_at
2010 Oct 29
2
wilcox.test; data type conversion?
I'm working on a quick tutorial for my students, and was planning on
using Mann-Whitney U as one of the tests.
I have the following (fake) data
grade <- c("MVG", "VG", "VG", "G", "MVG", "G", "VG", "G", "VG")
sex <- c( "male", "male", "female", "male",
2003 Jun 12
9
Programcode and data in the same textfile
I have the following problem. It is not of earthshaking importance,
but still I have spent a considerable amount of time thinking about
it.
PROBLEM: Is there any way I can have a single textfile that contains
both
a) data
b) programcode
The program should act on the data, if the textfile is source()'ed
into R.
BOUNDARY CONDITION: I want the data written in the textfile in exactly
2011 Feb 10
1
about prediction with a factor
Hi,
I don't know how to make prediction with a factor in the linear model.
Say
yd=c(1,2,3,4,5)
> sl=c(2,3,4,5,6)
> sex=c("male","male","female","female","male")
> sex=factor(sex)
> m=lm(sl~yd+sex+sex:yd)
How to make a prediction with new data like yd=c(4,5,6,7,8) for male and
female separately ?
Thank you very
2006 Dec 12
1
strings as factors
Hi,
To be able to match cases with a benchmark I need to have a data.frame with
a character id variable. however, I am surprised why this seems to be so
hard. In fact I was unable to succeed. Here is what I tried:
>test1 <-expand.grid(ID = 1:2, sex = c("male","female"))
>is(test1[,2])
[1] "factor" "oldClass"
>test2 <-expand.grid(ID =