Find Conditions

Rails
1

Is it possible to us an if statement in a find condition statement

Controller:
def index
@companies = Company.search(params[:province])
respond_to do |format|
format.html # index.html.erb
format.xml { render :xml => @companies }
end
end

Model:
def self.search(search)
if search
find(:all, :conditions => [‘province LIKE ?’, “%#{search}%”])
else
find(:all)
end
end

I want to be able to check the URL to see if there are any other
parameters being passed and if so use them in the condition statemetn

find(:all, :conditions => [‘province LIKE ? and wood_based_panels =
1’, “%#{search}%”])

I would like to check to see if the wood_based_panels variable was
passed in the URL if so I would like to add it to the statement if not
I would like to remove it and only have the following.

find(:all, :conditions => ['province LIKE ?, “%#{search}%”])

2

Shawn B wrote:

Model:
def self.search(search)
if search
find(:all, :conditions => [‘province LIKE ?’, “%#{search}%”])
else
find(:all)
end
end

Firstly, always remember these are statements with variables. You can
pull the
above apart like this:

def self.search(search)
condition = [‘province LIKE ?’, “%#{search}%”] if search
find(:all, :conditions => condition)
end

I want to be able to check the URL to see if there are any other
parameters being passed and if so use them in the condition statemetn

Then don’t pass in params[:province]. Pass in params, and use it
directly in a
named argument replacement thing, like this (someone check my math!):

condition = ‘1 = 1’
params.each do |k,v|
condition << " AND #{k} LIKE ‘%:#{k}%’"
end
return find(:all, :conditions => [condition, params])

That way, whatever new params you think of, the method will
automatically accept.

(This logic assumes LIKE ‘%%’ matches anything. Write unit tests to
check that.
Otherwise, put unless v.blank? on the end of the line with the <<.

–
Phlip

3

Thanks for the quick response. I am very new to Ruby and wondering if
you can help me a little bit more on this topic.

I tried your suggestions as follows

New Controller:
def index
@companies = Company.search(params[])
respond_to do |format|
format.html # index.html.erb
format.xml { render :xml => @companies }
end
end

New Method:
def self.search(search)
condition = ‘1 = 1’
params.each do |k,v|
condition << " AND #{k} = ‘:#{k}’"
end
return find(:all, :conditions => [condition, params])

 condition = ['province LIKE ?', "%#{search}%"] if search
 find(:all, :conditions => condition)

end

I am getting an error now as follows:
wrong number of arguments(0 for 1)