Complete a Field on Create/Update of Record - ruby-on-rails-3

Good Day
I have a field for business name, I would like a second field to be auto filled on Save/Update. If the Business has spaces between I require these to be replaced with a dash.
Example
Business Name: ABC Carpet Cleaners (Input)
Business Field: abc-carpet-cleaners#domain.com (Result Needed)
The #domain.com is just normal text
Any Ideas
Thanks in Advance

You can add a callback inside your model:
before_validation :fill_business_field
def fill_business_field
self.business_field = "#{self.business_name.downcase.gsub(' ', '-')}#domain.com" if !self.business_name.nil?
end

Related

How can I give a user the permission to create a field but not to change it?

I wanna a user to create a record but later dun give it the right to change the value of that field. should I do it By overriding create and write methods? is it possible to write such code:
field1: fields.float(string='Field',write=['base.GROUP_ID']),
This may work create a status field this field is a compute field when it's true the field1 will be read only. Because i'm on my phone i'm not going to writr the hole code just try to understand the idea
status = field.Boolean(compute='compute_status')
def compute_status(self):
for rec in self:
# first check of the use belong to the group that have full acces
if self.env.user.has_group('group_id') :
rec.status = False
# then check if the record is saved in databse
# unsaved records There id is instance of NewId it's a dummy class used for this
elif instanceOf(NewId ,rec.id) :
rec.status = False # here all users can fill the field when the record is not created yet but cannot edit
else :
rec.status = True # if record is saved and user is not in group_id make field readonly or invisible as you want
Now create your field and use status property to make it readonly when status field is True .
As you can see my answer is algorithme more than a code sorry for sysntax errors
I think the better way to do this is to create a group to which the user will belong, then set in the ir.model.access a rule, with the rights you want, for that particular group.
Ask if you need more help.
EDIT
You can define a view, that inherit from the original one, but is accessible only for the user group, like:
<field name="groups_id" eval="[(6, 0, [ref(' < your group > ')])]"/>
and there you redefine the field making it readonly. That's it.

Odoo: get type of field by name

in odoo you can get value of field by it's str name:
exm:
name = getattr(self, 'name')
what i want now is to know the type of field name is it :
fields.Char, fields.Many2one, fields.Many2many .....
so what i need is something like this
gettype(self, 'user_id')
is there a way to now what is the type of field in odoo?
You can search from ir.model.fields model.
ir_model_obj=self.env['ir.model.fields']
ir_model_field=ir_model_obj.search([('model','=',model),('name','=',field)])
field_type=ir_model_field.ttype
if field_type=='many2one':
print "do operation"
This may help you.
Odoo provides this information in the _fields attribute, I think It's better because every thing happens In the Python side no need for contacting the database, especially In my case my model have more than 30 fields :
for name, field in self._fields.iteritems():
if not isinstance(field, (fields.Many2one, fields.Many2many, fields.One2many)):
# logic go here
If you you want to verify just one fields:
if not isinstance(self._fields[field_name], (fields.Many2one, ...)): # do something

How can I parse text with colon, tabs and line breaks

I am not sure how I should put this question's topic. But I tried my best. Here is the problem:
I have text like
VPN:
1:
Address: 198.168.1.1
Name: Tux
Role: Dex
2:
Address: 198.168.1.2
Name: Pti
Role: JPT
and so on.....
How can I parse this properly. This list is a list of servers, there are 2 servers right now, there could be more than 20 of them.
I think of splitting by line break, checking the number, 1, 2.... then after the number first find line with word Address, Name and Role and so on.....but I'd love to have input of some experts here at SO. I'm using VB.NET
Thanks.
I would take everything to the left of the first colon in each line, then select based on that string: "Address", "Name", "Role", numeric value, or unknown. Then take everything to the right of the first colon as the value for that item. Every time you encounter a numeric value, begin a new record.
An alternative way to do this is with a regular expression, but it may be easier write and maintain just to code it.

How do I change the format ActiveRecord expects when parsing dates from a text field in a form?

The problem
I have a Ruby on Rails model with a Date attribute.
In the form for this model, I am using a single text field with a JQuery datepicker to represent this attribute (not a drop down for each of year, month, and day, as is the Rails custom).
The datepicker inserts dates with a mm/dd/yyyy format.
Rails is expecting dates with a dd/mm/yyyy format.
Examples
If a user selects March 12th, 2012, the datepicker puts 03/12/2012, which is interpreted by Rails as December 3rd, 2012.
If a user selects March 20th, 2012, the datepicker puts 03/20/2012, which is interpreted by Rails as the 3rd day of the 20th month of 2012. Since this date doesn't exist, Rails casts this to a nil value (I think).
Question
How do I change the date format Rails uses when parsing this date text field?
Notes:
1) I do not want to change the format of the date the datepicker inserts into the text field,
2) I am not asking about displaying my date attribute in a view.
I initially thought this could be solved through the Rails internationalization features, but it turns out I was wrong.
Ever since Ruby 1.9, the standard format for date parsing is dd/mm/yyyy, so as to better accomodate international users. More details can be found in this SO answer.
That standard is maintained in Rails, as Date.parse is now used to process data from form inputs. Using a before_validation callback won't work because the field is going to be received as nil by the callback method.
Right now there are two gems dealing with this specific issue, namely that date parsing in Rails does not follow the locale settings from I18n.locale. Both seem to work well.
delocalize, by clemens - Seems to have been applied successfully in a decent number or projects and has the highest number of stars at the moment.
i18n_alchemy by carlosantoniodasilva - This one has been released more recently. The author is a Rails core team member, and a very active one at that. Definitely deserves a look.
Since you don't want to change the picker's format, I would suggest you use a hidden field for the actual model property.
For example, add a hidden field for the model's date property, assuming you use a form builder as usual:
f.hidden_field :date
Then for the picker text input, don't bind it to the model's date property. Let's say the hidden field has ID 'modelname_date' and the picker text input has ID 'date_picker', use the following to make it work:
$(function(){
$("#date_picker").datepicker({altField: '#nodelname_date', altFormat: 'dd/mm/yyyy'});
});
In this way the date picker shows the date as 'mm/dd/yyyy' but Rails will see the date as 'dd/mm/yyyy'.
Update:
If you want to work this out on the Rails side, here's another solution I'd suggest:
Add a virtual property to your model: attr_accessor :bad_format_date
Add a before_validation callback in which you parse the input date and assign it to the real field:
before_validation do
self.date = Date.strptime(bad_format_date, "%m/%d/%Y")
end
Then for the form on the view use bad_format_date but initialize it with the date field value (if it's an edit form).
The timeliness gem makes ruby date/time parsing much more customizeable and integrates well with Rails.
Since you're working with Rails, be sure to check out the validates_timeliness project as well by the same guy. It includes all of timeliness plus sophisticated date/time validation methods for ActiveModel.
You could try do something like this.
$(function(){
$('#date_picker').datepicker( {
beforeShowDay: $.datepicker.noWeekends,
showOtherMonths: true,
selectOtherMonths: true,
dateFormat: 'dd-mm-yy',
defaultDate: date,
gotoCurrent: true
});
I just add the following monkey patch to config/time_formats.rb
class Date
class << self
alias :euro_parse :_parse
def _parse(str,comp=false)
str = str.to_s.strip
if str == ''
{}
elsif str =~ /^(\d{1,2})[-\/](\d{1,2})[-\/](\d{2,4})/
year,month,day = $3.to_i,$1,$2
date,*rest = str.split(' ')
year += (year < 35 ? 2000 : 1900) if year < 100
euro_parse("#{year}-#{month}-#{day} #{rest.join(' ')}",comp)
else
euro_parse(str,comp)
end
end
end
end

Replace space with dash before save using Rails 3

I am trying to save a name to the database and a single word (firstname) works fine but when the user enter both firstname and lastname I want Rails to save it to the database as firstname-lastname instead of firstname lastname (space between).
I know I perhaps should use a before create filter but I am not sure how this need to look like. I want the validation to work to, i.e. no two people should be able to use the same name.
I am using Rails 3.
You can use ActiveSupport's inflector method parameterize on the string.
name = 'john smith' # => john smith
name.parameterize # => john-smith
Further, parameterize takes an option to use for the word-break, so you can replace the dash with an underscore like this:
name.parameterize("_") # => john_smith
An advantage of using parameterize is that it normalizes the characters to the latin, so...
name = "jöhanne såltveç"
name.parameterize # => johanne-saltvec
EDIT: As of Rails 5.0.0.1 the separator needs to be passed as an option. Therefore: name.parameterize(separator: '_')
Why don't you just have first_name and last_name columns in the db, and create your own validation rule to make sure the combination is unique (http://guides.rubyonrails.org/active_record_validations_callbacks.html#creating-custom-validation-methods). You should also create a unique index over those two columns in your db.
Another option would be to us regexp and replace all existing spaces with. You'd put something along the lines of:
self.firstname.gsub(/\s+/, '-')
in your model.
Note: I'm not sure if ruby accepts \s as "any whitespace character" And I think the * should make sure that if someone enters a name with two neighbour spaces(or more) it won't convert each space into a separate dash, but only into one.
Other answer is correct,
But, if you want to preserve case while parameterizing
name = "Donald Duck"
name.parameterize(preserve_case: true) # => Donald-Duck