Default query parameter

[archanachowdary]

I would like to set a set of default query parameter name and value using javascript to my back end service,without adding them in the url everytime.

[archanachowdary]

using javascript

[anilsr]

@archana , You can use Assign Message Policy.

For Example,

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<AssignMessage async="false" continueOnError="false" enabled="true" name="Assign-Message-1">
    <DisplayName>Assign Message-1</DisplayName>
    <Properties/>
    <Add>
        <QueryParams>
            <QueryParam name="q">nodejs</QueryParam>
        </QueryParams>
    </Add>
    <IgnoreUnresolvedVariables>true</IgnoreUnresolvedVariables>
    <AssignTo createNew="false" transport="http" type="request"/>
</AssignMessage>

Above appends request queryparam , ?q=nodejs to all the requests. See attached proxy & play with same here.

http://asagarnodeapp-test.apigee.net/googlebooks

googlebooks-rev1-2016-03-31.zip

Keep us posted if you see any issues while implementing same.

[archanachowdary]

if i am doing something like this,adding the parameter when some condition is met ,what i have to add is only the parameter name ,the value is dynamic which i should get from developer or front end etc.How do i achieve that

<QueryParams>
            <QueryParam name="token"></QueryParam>
</QueryParams>

<Step>
<Condition>(proxy.pathsuffix MatchesPath "/user-likes") and (request.verb = "GET)</Condition>
 <Name>Assign-1</Name>
 </Step>

[anilsr]

@archana , Read about Apigee Flow Variables & Variables Reference, If it's dynamic value, you will use flow variables to add the value to queryparam.

<QueryParam name="token">{request.verb}</QueryParam>

[archanachowdary]

I have added the parameters in assign message ,how to send them to the target url in JS which i rewrote accordingly.