hi,
how can we assign an xml element value to some variable in
controller? e.g. if we have
<order>
<id>1</id>
<name>abc</name>
<location>xyz</location>
</order>
and if we want value of name i.e. 'abc' to be assigned in a variable
declared in a controller, say order_controller, like this- temp = "value
of xml element name i.e. abc".
how can we do that? thanks in advance 
-Dhaval
have a look at hpricot: http://code.whytheluckystiff.net/hpricot/
hi, thanks for the link Thorsten. in my application, i'm using builder. actually, i could generate an xml, post it and get a response in xml only. what i want to know is, thr is an element called result having either success or fail value and i want to show a msg depending upon the value. like if it has success the msg may be "action processed" or if its fail then msg may be "action failed" something like that. can you help me in this pls?
P.S.:- the xml request generation and response code is written in model and it sends request in xml and gets response in xml. i need to have the result's value in its controller. i hope i've provided the required details.
-Dhaval
I'm not sure if you really should have that in your model, but here's what I have in my controller to check for a successful FedEx rate available request. Get ready for some ugly code that works:
@resp, @data = h.post(path, xmlrequest, headers) doc = REXML::Document.new(@data) if doc.root.elements["HighestSeverity"] && doc.root.elements["HighestSeverity"].text.upcase == 'SUCCESS' services = REXML::XPath.match(doc, "//ServiceType") @services_and_rates = services.collect do |s| [s.text, s.parent.parent.elements["RatedShipmentDetails"].elements["ShipmentRateDetail"].elements["TotalNetCharge"].elements["Amount"].text.to_f + (0.006 * @cart.total_price.to_f)] end end
I'm sure that there are better ways to do this, but this worked when I had to figure it out. Essentially, I'm checking for a value of "SUCCESS" in the only "HighestSeverity" container in the response. If it was successful, I go on and look for each value for "ServiceType". I match the text of the service type with the rate by traversing using a series of child and parent functions. I create an array for later use.
Somebody once mentioned (I think) that you might be able to check XML values by looking in the params of the response. I'd look into that if I were you.
-Kyle
hi, thanks Kyle. that help me. i'd the same case in my response, "success" or "failure", and i could get this now. but now the next prb is, i need to print the values from the response itself on the page(as if we do for any other object using for loop), if the response is success. e.g. if response has success and the values as - <order> <id>1</id> <personalDetails> <firstName>abc</firstName> <lastName>def</lastName> <locationName>xyz</locationName> </personalDetails> <address> <bldg>21</bldg> <street>asd</street> <city>qwe</city> <state>zxc</state> </address> </order>
then i need to print it as First Name : abc Last Name : def Location Name : xyz Building : 21 street : asd city : qwe state : zxc
i tried to print the response directly, but that printed all values
in single line without a space. i also searched on internet, but
couldn't find anything with such requirement. is thr a way to get such
an output? Thanks in adv
-Dhaval
Yes, you can do that. Read up a bit on REXML or other XML parsing engines for Rails. My example above finds the "ServiceType" container, goes to its parent, then its parent, then its child named "RatedShipmentDetails", its child named "ShipmentRateDetail", its child named "TotalNetCharge", and finally, its child "Amount". To get the value, I used .text to specify that I want what's inside of the container.
Essentially, you can create a REXML document based on "//order//id" and assign values the same way:
first_name = doc.root.elements["personalDetails].elements["firstName"].text last_name = ...
You get the idea. I'm sure that there are better ways to do this, so please look around. Thorsten mentioned hpricot earlier, so see if it will better suit your needs. Try to see if params["order"]["id"] ["personalDetails"]["firstName"] can get you what you're looking for. All in all, look around. I didn't pay much attention to the "best" way to do things when I wrote a lot of my first code, and now I have a hard-to-maintain app. See what you can find that might work better than what I've given you.
-Kyle
hi,
thanks kyle, u mentioned the details very well. actually i have
almost 50 fields in my response xml, so was finding some better and
proper way to do it rather than putting each element in seperate
variable. but anyways, i'll keep searching the better way and will put
it here if i find any. for time being, i'll use this method only.
thanks once again
-Dhaval
hi,
sorry to start this thread again. but i'm having a prb again printing
the xml values in the view. as i'd mentioned earlier that i have almost
50 fields in the response xml. its a single record fetched from the
order table. what i'm trying to do is to assign those xml values to the
relevant textfields in a partial, but not able to. it prints the value
with xml tags .e.g. <firstName>abc</firstName> instead of only abc. but
if i print those values outside the textfield, it doesn't take those
tags and prints as abc. can anybody help me in this pls? thanks in
advance
-D