1. BreezeJS Feature Suggestions

Help us make Breeze.js better by letting us know what you’d like to see next.

Suggest new features, vote on existing ones, or fork Breeze in GitHub and send us a pull request.

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  1. More node.js / mongodb love

    I fall in love with Breeze, but the support in node / mongodb still needs a lot of work. I can't live with breeze anymore but I can't support .NET.

    I saw the TODO but wasn't updated since August 2013.

    Things like associations would change it completely.

    I vote for some sweet love for those who don't use .NET

    45 votes
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      1 comment  ·  Flag idea as inappropriate…  ·  Admin →
    • TypeScript breeze.d.ts: ValidatorFunction should return boolean

      The current breeze.d.ts file says:

      interface ValidatorFunction {
      (value: any, context: ValidatorFunctionContext): void;
      }

      Since a value can be either valid or invalid (true or false) in my opinion this should be a function returning a boolean. Also, the context parameter in the Validator constructor can be empty so it would be better if "context" is an optional parameter.
      And: the "message" part of the ValidatorFunctionContext is declared as "string" but can be a function also and "any" would be correct.

      1 vote
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        0 comments  ·  Flag idea as inappropriate…  ·  Admin →
      • Make the e-mail validator to accept capital letters

        The built in email validator does not accept capital letters , so I have made custom validator to do so.

        1 vote
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          1 comment  ·  Flag idea as inappropriate…  ·  Admin →
        • Add method "SaveChanges" on EntityAspect

          It would be nice if there is a method "SaveChanges" directly on the EntityAspect, similar to "RejectChanges". This makes it easier to save this and only this entity without affecting other entities that might have been changed. I know that there is a parameter on the EntityManager.SaveChanges(...) method, but having it directly on the EntityAspect makes it a little more convenient.

          1 vote
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            0 comments  ·  Flag idea as inappropriate…  ·  Admin →
          • Provide a link to WinJS

            Remove the need for jQuery and Knockout by linking it to WinJS ajax system and WinJS binding system.

            1 vote
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              0 comments  ·  Flag idea as inappropriate…  ·  Admin →
            • Improve mobile experience on the website

              The code samples appear to be fixed width and are difficult to view from iOS devices like the iPhone 5

              1 vote
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                0 comments  ·  Flag idea as inappropriate…  ·  Admin →
              • breeze.js createError function can't handle datajs errors

                My ODataController Post method was updating its entity's CreatedOn property with DateTime.Now value before it's saving to database.

                Apparently datajs doesn't like DateTime.Now value and gives an error with "Invalid date/time value".

                File: datajs-1.1.2.js - Line 2133

                After datajs throws the exception, it falls to breeze.js createError function. However, since it's expecting error.response property, it fails to continue by giving "response is undefined" message.

                File: breeze.debug.js - Line: 15302

                I've updated the function by adding a check for response property;

                function createError(error, url) {
                // OData errors can have the message buried very deeply - and nonobviously
                // this code…

                11 votes
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                  1 comment  ·  Flag idea as inappropriate…  ·  Admin →
                • 1 vote
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                    0 comments  ·  Flag idea as inappropriate…  ·  Admin →
                  • BreezeJS and Moongose

                    Hi All,

                    I am new to MEAN stack, I am to easily for Moongose based apps and developed rapid prototypes in less than 30 mins, but with Zaa example even though I can run the sample in 10 mins. The concept of metadata generation with respect to MEAN stack very confusing, where as for .NET MVC example I can easily understand.

                    12 votes
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                      0 comments  ·  Flag idea as inappropriate…  ·  Admin →
                    • Flag which navigation properties have been loaded

                      It's currently not possible to determine if a navigation property has been loaded.

                      For example a order.orderLines. There is no way of knowing whether orderLines is empty because the order has no lines or that the navigation property has been loaded.

                      This is a real pain when you have business logic that require the object graph to be loaded. This leads you to implement boiler plate data access related code to manually track which navigation property has been loaded - something that the breeze framework should be doing.

                      This feature has been asked for on SO here: http://stackoverflow.com/questions/17798514/any-way-to-tell-if-a-breeze-navigation-property-has-already-been-loaded

                      1 vote
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                        0 comments  ·  Flag idea as inappropriate…  ·  Admin →
                      • Breeze + Knockout validation -> new features

                        If App uses breeze and ko validation, I suggest to

                        add knockout validation rules for every fetched entity as showed in code example (here coffee code implementation for dataPropeties):

                        addRules = (breezeEntity) ->
                        return if breezeEntity.koValidationRulesAdded
                        entityType = breezeEntity.entityType
                        for property in entityType.dataProperties
                        continue unless property.validators.length > 0
                        do (property) ->
                        displayName = property.displayName or property.custom?.displayName or property.name
                        breezeEntity[property.name].extend
                        validation:
                        validator: (value) ->
                        if breezeEntity.entityAspect.validateProperty property.name, {displayName: displayName, entity: breezeEntity}
                        @message = ""
                        return true
                        else
                        @message = breezeEntity.entityAspect.getValidationErrors(property.name)[0].errorMessage
                        return false
                        message: ""
                        return
                        breezeEntity.koValidationRulesAdded = true
                        return

                        this code allows:
                        1) to validate single property with usage of all…

                        5 votes
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                          0 comments  ·  Flag idea as inappropriate…  ·  Admin →
                        • Tools for meta data creation for breeze not depending on a server-side ORM and tools for ORM-less server-code generation

                          For me ia server-side ORM for a web application is a wrong cut. I think business logic should go as close to the data as possible to guarantee consistency, protection, and security. This means to me using stored procedures and database functions wherever possible (in a relational environment) and reasonable. In addition, if done right it's arguably unbeatably fast. The role of the Web API should be to provide access to the data across the network but not processing it.

                          Let's suppose we have to query the database for all open orders for a certain customer including order items and…

                          4 votes
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                            1 comment  ·  Flag idea as inappropriate…  ·  Admin →
                          • Support for NotMapped properties server side

                            it would be useful to have support for server-side properties notmapped together with the properties of normal db. Obviously readonly
                            Thanks

                            22 votes
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                              1 comment  ·  Flag idea as inappropriate…  ·  Admin →
                            • Specify the version of Express to install in the Zza Example

                              Express v4 differs a bit and will not work with the Zza Example. One recommendation would be to change the instructions until the express code is updated to: npm install express@3.5.1

                              Once the code is updated to support Express v4, remove that specific version from the instructions.

                              1 vote
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                                0 comments  ·  Flag idea as inappropriate…  ·  Admin →
                              • 4 votes
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                                  0 comments  ·  Flag idea as inappropriate…  ·  Admin →
                                • Possible Bug

                                  Returns all records if Field name is same as search text.
                                  Go to Learn Breeze Step 6 of 6
                                  Change code to this:
                                  var p1 = Predicate.create("CompanyName", "contains", "CompanyName");
                                  var whereClause = p1;

                                  1 vote
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                                    0 comments  ·  Flag idea as inappropriate…  ·  Admin →
                                  • Better documentation to create own support for any external datasource

                                    What needs to be considered on client/server side etc.
                                    Maybe with a sample?

                                    345 votes
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                                      4 comments  ·  Flag idea as inappropriate…  ·  Admin →
                                    • Better non MS support

                                      Compared with other data client libraries Breeze is way ahead but it is still heavily tied to MS. It says it supports most dbs out the box but this is a bit misleading as you need a .NET provider which really means Windows. I've mainly worked on MS technologies but recent requirements mean a lot of our systems run on Linux and I'd like to use Breeze for this.

                                      6 votes
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                                        0 comments  ·  Flag idea as inappropriate…  ·  Admin →
                                      • Fix Navigation Property Update When Changing a Composite Foreign Key

                                        In an entity that has a navigation property based on a composite foreign key (i.e. based on more than one foreign key properties), when setting one of the FK properties, breezejs tries to update the navigation property, however it searches for the foreign entity using a single key instead of a composite key, so it never finds the property.

                                        To see what I mean and for a possible fix, please refer to breeze.debug.js (v.1.4.8) lines 4907 and 4908:
                                        key = new EntityKey(relatedNavProp.entityType, [newValue]);
                                        relatedEntity = entityManager.findEntityByKey(key);

                                        The related entity never gets found since the key consists only of a single…

                                        30 votes
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                                          2 comments  ·  Flag idea as inappropriate…  ·  Admin →
                                        • Support Web API 5.1.x

                                          When attempting to install the Breeze.Server.WebApi2 from nuget, this error is reported, and installation fails:

                                          Install failed. Rolling back...
                                          Updating 'Microsoft.AspNet.WebApi.Core 5.1.1' to 'Microsoft.AspNet.WebApi.Core 5.0.0' failed. Unable to find versions of 'Microsoft.AspNet.WebApi.WebHost, Microsoft.AspNet.WebApi.Owin' that are compatible with 'Microsoft.AspNet.WebApi.Core 5.0.0'.

                                          5 votes
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                                            1 comment  ·  Flag idea as inappropriate…  ·  Admin →
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