I'm using MongoDB to store my records and am using Ag-grid react to display them. The grid has several columns including the record's ObjectID (_id), name, type, etc. Using the filter agColumnTextFilter works for the name and type fields with the columnDef of:
{
headerName: 'Column Name',
field: 'name',
filter: 'agTextColumnFilter',
},
which then leads to this query setup (using the contains filter option):
case "contains":
qp[fieldName] = new RegExp(['.*', user input string, '.*'].join(''), 'ig');
this logs the correct query:
"query db { name: /.*query string.*/gi }"
and the proper rows are displayed. Since the displayed _id is a string as well I tried something similar:
{
headerName: 'ID',
field: '_id',
valueGetter: (params) => {
let id = params.data._id;
return id.slice(id.length-5); //only display last part of ID instead of entire thing
},
filter: 'agTextColumnFilter',
},
Using the same contains logic as above the following query is logged to the console:
query db { _id: /.*_id segment.*/gi }
However, no rows are returned in this case (even though there should be rows returned). Do I need to use different logic or is there a problem with this current logic? Any advice is appreciated.
Edit: Turns out even though the ID displays as a String a cast of the string to an ObjectID is needed:
qp[fieldName] = new ObjectID(_id string)
Problem with this is searching for part of a specific ID won't work because it's not a valid ID. Searching for a full ID works but isn't ideal either. If anyone has any ideas on how I can filter just part of the ID I'd appreciate it.
You can probably set a valueFormatter on the column that displays the partial ObjectId. The filtering will be done using the full ObjectId.
Related
How to: If I want to retrieve a FieldValue (String) only if in the same document there is another field (boolean) which is true.
For Example: If I have a Document in Firestore which contains a Field: {name: "Some Name", active: true} and I only want the name to be retrieved if the field "active" is true. Is this possible?
Does this question make sense? Sorry, I'm a self-taught developer and I have difficulties to explain stuff as a coder. But I hope you guys can still understand what I want to achieve.
You can run query to filter out the documents you don't want. like:
query(collection(db, "users"), where("active", "==", true));
But if you want retrieve a single fieldvalue like "name" and filter out other value in same document like "active" is impossible. firestore only retrieve whole document.
I am using API's to receive multiple row data from a particular user, my doubt is how one can display that data in react using AG-Grid format.
this.setState
({
data: res.data,
columnDefs: [
{
headerName: " CreateDate", field: " CreateDate"
}, {
headerName: "Task Name", field: "TaskName"
}],
rowData:[{
//facing errors while assigning these values
TaskName : data.TaskName,
CreateDate : data[0].CreateDate
}]
})
Hi Aboli I am sharing stackblitz which will help you to do what you are trying to achieve.
I have assumed a lot about your data object since we dont know much about it. usually data should come in key value pair where keys matches to the field name which you have defined in your coldef object so that ag-grid can consume it directly.
But sometimes we need to sanitize data so that it matches with the way column field have been defined. feel free to ask more question and try to be a bit elaborative with code so that you can get solution faster.
here is the stackblitz example.
Is it possible to put a custom column definition for select fields in a ui grid and pick up the rest of the fields from the data schema? This use case arises because my json data schema is variable and there's just one column I'm sure about(its presence in data) and would like to apply a custom cell template to just that column.
Grid options:
$scope.gridOptions = {
data: data,
columnDefs: [
{ field: 'name', width: 250, cellTemplate: "../../tpl/grid/name_template.html" }
]
}
where data is the json object of variable schema.
If I define the grid this way, only the name field from my data object will be displayed in the grid. Is it possible to use the custom column def for the name field and also display the other objects in the data object without specifying column definitions for them?
To provide more clarity:
my data object can be:
[{name: 'apple', type: 'fruit', seasonal: true}]
or:
[{name: 'apple', color: 'green', taste: 'sour'}]
Basically my use case is such that there's no way for me to know before hand what columns will be returned from the query that initialises the grid data object but I'm sure of the fact that a name column will be part of the data returned by the query. I would want to supply a custom cell template and other properties to the name field and also display the other columns that might be there.
The normal behaviour is that if I specify a column definition for one column in the field, then I have to specify definitions for all the other columns that are part of the data to make them visible and in my case I don't know what the other field names might be.
$scope.gridOptions = {
data: data,
columnDefs: [
{ field: 'name', width: 250, cellTemplate: $.get('url-to-your-template.html') }
]
}
Check if the above works. You can use your own service for fetching template
Let's say I have the following document schema in a collection called 'users':
{
name: 'John',
items: [ {}, {}, {}, ... ]
}
The 'items' array contains objects in the following format:
{
item_id: "1234",
name: "some item"
}
Each user can have multiple items embedded in the 'items' array.
Now, I want to be able to fetch an item by an item_id for a given user.
For example, I want to get the item with id "1234" that belong to the user with name "John".
Can I do this with mongoDB? I'd like to utilize its powerful array indexing, but I'm not sure if you can run queries on embedded arrays and return objects from the array instead of the document that contains it.
I know I can fetch users that have a certain item using {users.items.item_id: "1234"}. But I want to fetch the actual item from the array, not the user.
Alternatively, is there maybe a better way to organize this data so that I can easily get what I want? I'm still fairly new to mongodb.
Thanks for any help or advice you can provide.
The question is old, but the response has changed since the time. With MongoDB >= 2.2, you can do :
db.users.find( { name: "John"}, { items: { $elemMatch: { item_id: "1234" } } })
You will have :
{
name: "John",
items:
[
{
item_id: "1234",
name: "some item"
}
]
}
See Documentation of $elemMatch
There are a couple of things to note about this:
1) I find that the hardest thing for folks learning MongoDB is UN-learning the relational thinking that they're used to. Your data model looks to be the right one.
2) Normally, what you do with MongoDB is return the entire document into the client program, and then search for the portion of the document that you want on the client side using your client programming language.
In your example, you'd fetch the entire 'user' document and then iterate through the 'items[]' array on the client side.
3) If you want to return just the 'items[]' array, you can do so by using the 'Field Selection' syntax. See http://www.mongodb.org/display/DOCS/Querying#Querying-FieldSelection for details. Unfortunately, it will return the entire 'items[]' array, and not just one element of the array.
4) There is an existing Jira ticket to add this functionality: it is https://jira.mongodb.org/browse/SERVER-828 SERVER-828. It looks like it's been added to the latest 2.1 (development) branch: that means it will be available for production use when release 2.2 ships.
If this is an embedded array, then you can't retrieve its elements directly. The retrieved document will have form of a user (root document), although not all fields may be filled (depending on your query).
If you want to retrieve just that element, then you have to store it as a separate document in a separate collection. It will have one additional field, user_id (can be part of _id). Then it's trivial to do what you want.
A sample document might look like this:
{
_id: {user_id: ObjectId, item_id: "1234"},
name: "some item"
}
Note that this structure ensures uniqueness of item_id per user (I'm not sure you want this or not).
I'm receiving a "Ext.data.DataReader: #realize was called with invalid remote-data" error when I create a new record via a POST request. Although similar to the discussion at this SO conversation, my situation is slightly different:
My server returns the pk of the new record and additional information that is to be associated with the new record in the grid. My server returns the following:
{'success':true,'message':'Created Quote','data': [{'id':'610'}, {'quoteNumber':'1'}]}
Where id is the PK for the record in the mysql database. quoteNumber is a db generated value that needs to be added to the created record.
Other relevant bits:
var quoteRecord = Ext.data.Record.create([{name:'id', type:'int'},{name:'quoteNumber', type:'int'},{name:'slideID'}, {name:'speaker'},{name:'quote'}, {name:'metadataID'}, {name:'priorityID'}]);
var quoteWriter = new Ext.data.JsonWriter({ writeAllFields:false, encode:true });
var quoteReader = new Ext.data.JsonReader({id:'id', root:'data',totalProperty: 'totalitems', successProperty: 'success',messageProperty: 'message',idProperty:'id'}, quoteRecord);
I'm stumped. Anyone??
thanks
tom
[Responding with an answer instead of a comment for code formatting...]
Some indented formatting will make the difference clear. This (correct) form returns a single object with two properties:
{
'success':true,
'message':'Created Quote',
'data': [{
'id':'610',
'quoteNumber':'1'
}]
}
Your original format returned two separate objects with mismatched properties that cannot be resolved into columns:
{
'success':true,
'message':'Created Quote',
'data': [{
'id':'610'
},{
'quoteNumber':'1'
}]
}
Turns out that the response from the server should look like this:
{'success':true,'message':'Created Quote','data': [{'id':'610','quoteNumber':'1'}]}
A subtle difference, not one that I'm certain I understand.