[Seaside] Fwd: Serializing data in POST request should be different than GET

Lukas Renggli renggli at gmail.com
Sun Aug 15 16:51:18 UTC 2010


Are you using all the latest code? There were quite a few changes in
that area recently.

I doubt that using a dictionary generally works, because the
serialization methods return multiple string parameters.

Lukas

On 15 August 2010 18:44, Bart Veenstra <bart.veenstra at gmail.com> wrote:
> Hello there fellow smalltalkers.
> I am using JQuery alot and some plugins rely on the jquery data to be
> processed as a dictionary instead of a query string generated by JSJoin when
> using a POST request.
> By default  the data object in JQAjax is serialized like this:
>
> bind("move_node.jstree", function(e, data) {
>             data.rslt.o.each(function(i) {
>                 $.ajax({
>                     type: "POST",
>                     data: ["event=move_node.jstree", "performcopy=" +
> data.rslt.cy, "id=" + $(this).attr("id"), "metadata=" +
> JSON.stringify($(this).data("jstree")), "ref_id=" + data.rslt.np.attr("id"),
> "ref_metadata=" + JSON.stringify(data.rslt.np.data("jstree")), "position=" +
> data.rslt.cp + i, "title=" + data.rslt.name, "_s=eOxqO8i-5PB3xS69",
> "_k=ep5WPiUeiuB5Jw_L", "5"].join("&"),
>                     url: "/questionmanager"
>                 })
>             })
>
> Which results in a POST with the following params:
>
> 5_kep5WPiUeiuB5Jw_L_seOxqO8i-5PB3xS69eventmove_node.jstreeidquestioncategory_3metadata{"path":"sandmin/questioncategories/questioncategory_3","id":3}performcopyundefinedposition50ref_idquestioncategoriesref_metadata{"path":"sandmin/questioncategories","id":"questioncategories1"}titleundefined
>
> Some values are not correctly translated by javascript because everything is
> presumed a String.
> In this example the concatination of position goes wrong because when
> position=" + data.rslt.cp + i
> is executed, the variabels data.rslt.cp and i are concatinated as a string
> because the whole thing is a string. So the data does not arrive in the way
> I want at the server.
> To fix this issue I made some changes to the data method in JQAjax:
> from:
> JQAjax  data
> ^self options at: 'data' ifAbsentPut: [JSJoin new]
> to:
> JQAjax  data
> ^self options at: 'data'
> ifAbsentPut:
> [| type |
> type := self options at: 'type' ifAbsentPut: ['GET'].
> type = 'POST' ifTrue: [GRSmallDictionary new] ifFalse: [JSJoin new]].
> GRSmallDictionary does not understand some methods used by the rest of
> seaside, so I added them as well:
> GRSmallDictionary  add: anAssociation
> anAssociation isVariableBinding
> ifTrue: [self at: anAssociation key put: anAssociation value]
> ifFalse: [self at: anAssociation put: ''].
> ^anAssociation
>
> GRSmallDictionary  addAll: aCollection
> aCollection _addAllToDictionary: self.
> ^aCollection
> GRSmallDictionary  collection
> ^self
>
> This results in the correct serialization of post requests:
> bind("move_node.jstree", function(e, data) {
>             data.rslt.o.each(function(i) {
>                 $.ajax({
>                     type: "POST",
>                     data: {
>                         event: "move_node.jstree",
>                         performcopy: data.rslt.cy,
>                         id: $(this).attr("id"),
>                         metadata: JSON.stringify($(this).data("jstree")),
>                         "ref_id": data.rslt.np.attr("id"),
>                         "ref_metadata":
> JSON.stringify(data.rslt.np.data("jstree")),
>                         position: data.rslt.cp + i,
>                         title: data.rslt.name,
>                         "_s": "Ww1O92fPwzOMnyHw",
>                         "_k": "nThH6d1dgDERL5ax",
>                         "5": null
>                     },
>                     url: "/questionmanager"
>                 })
>             })
> with the request post parameters:
> 5_kzGF3nB7vsPFGzplS_s2H-w22qrPABNE-Fleventmove_node.jstreeidquestioncategory_4metadata{"path":"sandmin/questioncategories/questioncategory_4","id":4}position6ref_idquestioncategoriesref_metadata{"path":"sandmin/questioncategories","id":"questioncategories1"}
> the position is now calculated correctly.
> I don't know where to go from here :) Atleast it works in my Visual Works
> 7.7 image, But I am unfamiliar with pharo to commit this change.
> Is this something Seaside could use?
> And how can i control the serialization of the dictionary keys. Sometimes
> the are encapsulated by double quotes, and sometimes the aren't :S.
> Regards,
> Bart Veenstra
>
>
>
>
>
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> http://lists.squeakfoundation.org/cgi-bin/mailman/listinfo/seaside
>
>



-- 
Lukas Renggli
www.lukas-renggli.ch


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