similar to: Beginner questions on attributes and arrays

I''ve been struggling a bit trying to figure out the best way to design/implement a system with authentication/authorization, and was hoping some of you may be able to offer some advice.. At the moment, I have a system with 4 different types of users - clients, administrators, sales_reps, and public_users. I''m using "Authorizing Users with Roles" from the Rails Recipes

I am using package ks() to build 3D representations of bird territories and calculate territory volume from spatial data (simply x, y, and z coordinates). What I want to do is determine at what sample size (# locations collected) does the territory volume stop increasing. This should give me an idea of the number of points needed for future seasons. So I have a couple of birds each with 200

I am a complete newbie in R . Using R 2.2.0 Windows XP This started as a simple exercise to see if I could produce a simple Cleveland style dotchart with a line from the '2' axis to the dot rather than a continuous line as do "dotchart" and "dotchart2". At least I could not find that option. I got a crude program to work but it includes unnecessary steps.

Hi folks, I''m new to this... so hopefully someone can help me. I have a few objects... Property and Address and Landlord... where a Property has an address and a landlord has an address also. I''ve modelled this in the db with the properties table having an address_id and the landlord table having an address id. My rb looks like: class Property < ActiveRecord::Base

Hi, I''m trying to do a bulk update on an array with the helper text_field. I''m trying to create an inputfield for every object in the array, but I''m not getting it right... example: class ClassA @arrayB[] end HTML (code with error): <% 0.upto(9) do |index| %> <%= text_field ''ClassA'', ''arrayB[index]'' %> non

Hello R users, I am trying to run a model with a binary response variable (nesting success: 0 failure, 1 success) and 8 fixed terms. Nesting success was examined in 72 cases in 34 territories (TER) during a 6 study years. Territories are nested within 14 patches (PATCH). I want to run a model taking into account these nested factors and repeated observation. To do this, I assume that the best

All, I''m having a hell of a time figuring out what is going on here. I''m trying to override one of my getters so that I can format it a certain way in my form. But I can''t seem to get text_field to call the appropriate method on my object. So here''s my getter: public def FAX fax = read_attribute(:FAX) puts fax

I want to build a simple calculator with 1 form and a results page. The form will be redisplayed with an error message upon an invalid value entered. I won''t be using any database/active record for this. The problem i have is when i return to the form page i want to redisplay the values already entered in the form fields. Should i use text_field (which seems to be tied to a model) or

So I''m trying to do that hot new thing with AJAXy forms: http://idiet.toasterwaffles.com/foods/list Here''s the relevant code in list.rhtml (for the form portion) <tbody> <%= render_collection_of_partials "list_stripes", @foods %> </tbody> <tfoot> <tr id="addFood"><%= form_remote_tag( :html =>

Currently I have a registration form that is built like this: <label for="First name">First name</label> <%= text_field "user", "first_name" %><br> <label for="Last name">Last name</label> <%= text_field "user", "last_name" %><br> <label for="Email">Email</label>

Hello all, I have a model with two entities (document and asset) and a 1:1 relationship defined between them (every model has an asset). I want to generate a rthml view that generates a hash for document attributes and a nested hash for asset attributes (for example {:document =>{:name=>XXX :asset => {date =>XXX}}) According to the Pragmatic Programmers book (page 355), the input

Let''s assume that I am trying to build an application where the user can enter invoice. In the app the user can add lines items. Each line item has decription, date, rate and hours. When the invoice screen comes up the first time I have one blank row for the line items. <tr> <th>Description</th> <th>Date</th>

I have AMOUNT field that ActiveRecord maps to Float. Then I use text_field helper to generate text inputs on forms. Helper takes model object and attribute name and does not provide any formatting abilities, thus 2.40 is shown as 2.4 which is fine with floats but does not look good with currency. I have worked around this issue by adding amount_f attribute to the model that returns formatted

Hi all All my forms should look the same, so I think always putting the right div etc. tags around them is a violation of the DRY principle. Until now my forms look like that: <div class="text_field"> <label for="news_item_subject">Subject:</label> <%= text_field "news_item", "subject" %> </div> Now I want the default

Hi .. I am new to Rails and it is not clear to me why I am getting the following error. Any help appreciated. -m. $cat app/views/admin/new.rhtml <% @page_title = "New member..." -%> <%= start_form_tag( :action => ''create'' ) %> <table> <tr> <td> First Name: </td> <td> <%= text_field(

I''m hoping there''s an easy way to do this. I''m trying to read options from a database, and insert them into form tags. So for example, In the Database Table: options size: 300 type: text_field maxsize: 300 and I want to create a text_field form tag, with all the appropriate options, is there an easy way to do this, other than having the code output the HTML

I am trying to set a default value in a text_field form. I know how to do this in html, but is there a way to do this with form_for Here is my code <% form_for :user do |f| -%> <p><label for="firstname"%>First Name</label><br/> <%= f.text_field :firstname%></p> ... <p><label for ="email"%>Email</label><br/>

Hi ActionView::Helpers::FormHelper methods (e.g. #text_field, #check_box...) take object_name as an argument. From this argument they infer a name that is supposed to contains the reference to the relevant object. I can''t see why the FormHelper methods were designed that way. Compared to simply passing them a reference, the current way seems too complicated and an invitation to problems

Hi There, rails noob just trying to suss a few things out. So I have 2 tables. 1 called Posts and the other called comments. On one page I need to be able to edit both the information about the post and the attributes of each comment for that post. So here is what the array might look like: (Inside the params hash) "post" => [ {"id"=>28, "title" =>

I have two tables: - projects - lines lines has a foreign key constraint to projects.id When I''m creating a new line object, the database fails on insert with the following error: "PGError: ERROR: null value in column "project_id" violates not-null constraint" My code looks like this: def create_lines @project = params[:id] @line =